HOVER-1 SYPHER Electric Self-Balancing Hoverboard User Manual

: June 2, 2024
: HOVER-1

HOVER-1 SYPHER Electric Self-Balancing Hoverboard

HELMETS SAVE LIVES!

Always wear a properly °itted helmet that complies with CPSC or CE safety standards when you ride your hoverboard.

Correct Fit
Make sure your helmet covers your forehead.

Incorrect Fit
The forehead is exposed and vulnerable to serious injury.

WARNING!

PLEASE READ THE OPERATION MANUAL THOROUGHLY
Failure to follow the basic instructions and safety precautions listed in the operation manual can lead to damage to your Sypher, property damage, serious bodily injury, and death. Thank you for purchasing the Hover-1 Sypher electric hoverboard. Please read all instructions carefully before using and retain this manual for future reference.

To avoid collision falls, and loss of control, please learn how to ride the Sypher safely.
You can learn how to ride the Sypher by reading the operation manual and watching videos.
Hover-1 can not be held liable for damage or injury caused by failure to understand and/or failure to follow the warnings and instructions in this manual.

ATTENTION

Use only the supplied charger from Hover-1 with this hoverboard.
The operating temperature range of the Sypher is 32°F – 104°F (0°C – 40°C).
Do not ride on icy or slippery surfaces.
Read the operation manual and warning labels before riding.
Store the Sypher in a dry, ventilated environment.
When transporting the Sypher, avoid violent crashes or impact.

LOW-TEMPERATURE WARNING

Low temperatures will affect the lubrication of moving parts inside the Sypher hoverboard, increasing internal resistance. Additionally, the discharge capacity and the capacity of the battery will be significantly decreased. Use caution when riding the Sypher in cold temperatures (below 40°F/4°C). Doing so may increase the risk of mechanical failures of the hoverboard, which may lead to damage to your Sypher, other property damage, serious bodily injury, and death.

SAFETY INSTRUCTIONS

Keep the Sypher away from heat sources, direct sunlight, humidity, water, and any other liquids.
Do not operate the Sypher if it has been exposed to water, moisture, or any other liquids to prevent electric shock, explosion, and/or injury to yourself and damage to the Sypher.
Do not use the Sypher if it has been dropped or damaged in any way.
Repairs to electrical equipment should only be performed by the manufacturer. Improper repairs void the warranty and may place the user at serious risk.
Do not puncture or harm the exterior surface of the product in any way.
Keep the Sypher free from dust, lint, etc.
Do not use the Sypher for anything other than its intended use or purpose. Doing so may damage the Sypher or lead to property damage, injury, or death.
This product is not a toy. Keep out of reach of children.
Do not expose the batteries to excessive heat, such as direct sunlight or open °lame.
Do not allow hands, feet, hair, body parts, clothing, or similar articles to come in contact with moving parts, wheels, or the drivetrain while the Sypher is running.
Do not operate or allow others to operate the Sypher until the user understands all instructions, warnings, and safety features described in this manual.
Check with your doctor if you have a medical condition that could affect your ability to use the Sypher.
Persons with head, back, and neck ailments, or prior surgeries to those areas of the body are not recommended to use the Sypher.
Do not operate if you are pregnant or have a heart condition.
Persons with any mental or physical conditions that may make them susceptible to injury or impair their physical or mental capabilities to recognize, understand, and perform all of the safety instructions and assume the hazards inherent in operation should not use the Sypher.
In this manual, the above symbol with the word “NOTE” indicates instructions or relevant facts the user should understand prior to using the device.
In this manual, the above symbol with the word “CAUTION” indicates a hazardous situation that, if not avoided, can cause minor or moderate injury.
In this manual, the above symbol with the word “WARNING” indicates a hazardous situation that, if not avoided, can cause serious injury or death. Please keep your serial number on °ile for warranty claims as well as proof of purchase.
Prolonged Exposure to UV rays, rain, and the elements may damage the enclosure materials. Store indoors when not in use.

INTRODUCTION

The Sypher hoverboard is a personal transporter. Our production processes are developed with strict testing for each hoverboard. Operating the hoverboard without following the contents of this manual may lead to damage to your hoverboard or bodily injury.

PACKAGE CONTENTS

Hover-1 Sypher Hoverboard
Charger & Charging Cable
Operation Manual

FEATURES/PARTS

Fender
Right Footpad
Protective Chasis Casing
Left Footpad
Tire
LED Screen
Charge Port (on bottom)
Power Button (on bottom)

OPERATING PRINCIPALS
The Sypher uses digital electronic gyroscopes and acceleration sensors to control balance and motion, depending on the user’s center of gravity. The Sypher also uses a control system to operate the motors that are located within the wheels. The Sypher has a built-in inertia dynamic stabilization system that can assist with balance when moving forward and backward, but not while turning.
TIP – To increase your stability, you must shift your weight during turns, especially when entering a turn at higher speeds.

SPECIFICATIONS

Model: Hover-1™ DSASYP
Net Weight: 16.21 lbs (7.35 kg)
Max Supported Weight: 220 lbs (100 kg)
Min Supported Weight: 44 lbs (20 kg)
Max Speed: Up to 7 mph (11.2 km/h)
Max Range: Up to 7 miles (11.2 km)
Max Incline Angle: 8°
Rated Power: 150W x 2 (dual motor)
Max Power: 200W x 2 (dual motor)
Charge Time: Up to 5 hours
Battery Type: Lithium-ion
Battery Voltage: 25.2V
Battery Capacity: 4.0Ah
Power Requirement: AC 100V240V, 50Hz/60Hz
Ground Clearance: 2 inches (5.08 cm)
Platform Height: 4.5 inches (11.43 cm)
Tire Size: 6.5 inches (16.51 cm)
Tire Type: Non-Pneumatic Solid Tires
BT ID: D042258
FCC ID: 2AANZSYP

CONTROLS AND DISPLAY

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY

TURNING YOUR DEVICE ON/OFF
Power On: Place your Sypher °lat on the °loor and press the power button (located on the rear of your Sypher) once. Check the

LED indicator
(located in the center of your Sypher). The battery indicator should be lit, indicating the Sypher is powered on. Power O˛: Press the power button once.

MAT SENSORS
There are four sensors under the foot mats of your Sypher. When riding the hoverboard, you must ensure you are stepping on the foot mats. Do not step or stand on any other area of your hoverboard. The hoverboard may vibrate or spin in one direction if weight and pressure are applied to only a one-foot mat.

BATTERY INDICATOR
The display board is located in the middle of the Sypher.

A green LED Light indicates the hoverboard is fully charged.
A red °lashing LED light and beeping indicate low battery.
A yellow °lashing LED light indicates the hoverboard is charging.

When the LED light turns red, please recharge the Sypher.

RUNNING INDICATOR
When the operator triggers the foot mats, the running indicator LED will light up, which means that the hoverboard has entered the running state. When the hoverboard encounters an error during operation, the running LED light will turn red (for more details, see “SAFETY ALERTS” on page 16).

BLUETOOTH® SPEAKER

The Sypher hoverboard has a powerful built-in wireless speaker, so you can play your music while riding.

PAIRING THE SPEAKER

Turn on your hoverboard. The speaker will “ping” to announce that it’s waiting for a Bluetooth® connection. This will indicate your hoverboard’s speaker is now in pairing mode.
Place the hoverboard and the Bluetooth® device you would like to pair within the operating distance. We recommend keeping the two devices no further than 3 feet (1 meter) apart during pairing.
Ensure Bluetooth® is enabled on your phone or music device. Refer to the manufacturer’s instructions for how to enable Bluetooth® on your device.
Once you have activated Bluetooth® on your device, select the option “H1˜SYP” from the list of available Bluetooth® devices.
If prompted, enter the PIN code “000000” and con°irm the entry.
The speaker will say “paired” when successfully paired.
Please note, the pairing mode on the hoverboard will last for two minutes. If no devices are paired after two minutes, the hoverboard speaker will automatically return to standby mode.
If pairing is unsuccessful, turn o˛ the hoverboard °irst and try again following the previous steps.
If your smartphone is out of range, or the battery is low on your hoverboard, the speaker may disconnect from your device, and the speaker will say “disconnected.” To reconnect, follow the previous steps, or recharge your hoverboard.

NOTE: Once you have paired the hoverboard speaker with a device, the speaker will remember the device and will pair automatically when the device’s Bluetooth® is activated within range. You do not need to re-pair any previously connected devices.
Your hoverboard can pair with up to two multi-point devices at a time. You can reconnect a previously paired device without going through the pairing process for up to two devices.

LISTENING TO MUSIC
Once the Bluetooth® speaker is paired to your device, you can stream music wirelessly through it. Select the track you wish to listen to on your device. All volume and track controls will be made using your music device. Should you encounter any problems while streaming, please refer to your device’s user manual.

SMARTPHONE APP

The Sypher is an app-enabled hoverboard compatible with Apple iOS and Android devices. Download the free Hover-1 app to change your Sypher’s LED screen message or display a picture. You can also set your riding difficulty to beginner, intermediate, or expert to limit your top speed and the hoverboard’s sensitivity to your movement. Open your smartphone’s camera app and hold the camera over the QR code below to download the Hover-1 app. You can also download it through your device’s app store. Search for “Sypher Hoverboard”.

BEFORE RIDING

It is important that you fully understand all the functions of your Sypher. If these functions are not used correctly, you will not have full control of your Sypher. Practice using the Sypher at slower speeds in a °lat, open area before taking the Sypher out into public areas.

PRE˜RIDE CHECKLIST
Ensure that your Sypher is in proper working order each time you ride. If a part of the hoverboard does not function correctly, please contact our Customer Support Center.

WARNING
Any Sypher that does not work properly can cause you to lose control and fall. Do not ride a Sypher with a part that is damaged. Replace the damaged part before riding.

Ensure the battery is fully charged before riding your hoverboard.
Please wear all appropriate safety gear before operating your hoverboard.
Make sure to wear comfortable clothes and °lat, closed-toe shoes when operating your hoverboard.

SAFETY PRECAUTIONS

Di˛erent localities and countries have di˛erent laws about riding electric transportation devices on public roads. You should check with local to ensure you are complying with these laws. Hover-1 is not liable for tickets or violations given to riders who do not follow local laws and regulations.

For your safety, always wear a helmet that meets CPSC or CE safety standards. In the event of an accident, a helmet can protect you from serious injury and in some cases, even death.
Obey all local tra˝ic laws. Obey red and green lights, one-way streets, stop signs, pedestrian crosswalks, etc.
Ride with tra˝ic, not against it.
Ride defensively; expect the unexpected.
Give pedestrians the right-of-way.
Do not ride too close to pedestrians. Alert them if you intend to pass them from behind.
Slow down at all street intersections and look to the left and right before crossing.
Your hoverboard is not equipped with re°lectors. It is not recommended that you ride in low-visibility conditions.
Do not ride above your skill level. Ensure you have had enough practice with all functions and features of your Sypher.
Before stepping on your Sypher, make sure it is placed °lat on level ground, the power is on, and the running indicator light is green. Do not step on if the running indicator light is red.
Do not try to open or modify your Sypher. Doing so voids the manufacturer’s warranty and may cause your Sypher to fail, resulting in injury or death.
Do not use the Sypher in a manner that would put people or property in danger.
If riding near others, keep a safe distance to avoid a collision.
Be sure to keep your feet on the foot mats at all times. Moving your feet ˛ your Sypher while driving is dangerous and may cause the Sypher to stop or veer sideways.
Do not operate the Sypher while under the influence of drugs or alcohol.
Do not operate the Sypher when you are restless or sleepy.
Do not ride your Sypher o˛ of curbs, ramps, or in a manner similar to a skateboard. Do not attempt to operate in a skate parkr empty pool. Misuse of your Sypher voids the manufacturer’s warranty and may lead to injury or damage.
Do not continuously spin in place, it will cause dizziness and increases your risk of injury.
Do not abuse your Sypher, doing so can damage your unit and cause the operating system to fail, which may lead to injury. Physical abuse, including dropping your Sypher, voids the manufacturer’s warranty.
Do not operate in or near puddles of water, mud, sand, stones, gravel, debris, or near rough and rugged terrain.
The Sypher can be used on paved surfaces that are °lat and even. If you encounter uneven pavement, please lift your Sypher over and past the obstruction.
Do not ride in inclement weather: snow, rain, hail, sleet, on icy roads, or in extreme heat or cold.
Bend your knees when riding on bumpy or uneven pavement to absorb the shock and vibrations. This will help you keep your balance.
If you are unsure if you can safely ride on a specific terrain, step o˛ and carry your Sypher. Always be on the side of caution.
Do not attempt to ride over bumps or objects greater than ½ inch, even when prepared and bending your knees.
Pay attention – look at where you are riding and be conscious of the road conditions, people, property, and objects around you.
Do not operate the Sypher in crowded areas.
Operate your Sypher with extreme caution when indoors, especially around people, property, and narrow spaces.
Do not operate the Sypher while talking, texting, or looking at your phone.
Do not ride your Sypher where it is not permitted.
Do not ride your Sypher near motor vehicles or on public roads.
Do not travel up or down steep hills.
The Sypher is intended for use by a single individual, DO NOT attempt to operate the Sypher with two or more people.
Do not carry anything while riding the Sypher.
Individuals with lack of balance should not attempt to operate the Sypher.
The Sypher is recommended for riders ages 8 and older.
At higher speeds, always take longer stopping distances into consideration.
Do not step forward o˛ of your Sypher.
Do not attempt to jump on or o˛ your Sypher.
Do not attempt any stunts or tricks with your Sypher.
Do not ride the Sypher in dark or poorly lit areas.
Do not ride the Sypher road, near or over potholes, cracks, or uneven pavement or surfaces.
Keep in mind that you are 4.5 inches (11.43 cm) taller when operating the Sypher. Make sure to go through doorways safely.
Do not turn sharply, especially at high speeds.
Do not step on the fenders of the Sypher.
Avoid riding the Sypher in unsafe places, including areas with °lammable gas, steam, liquid, dust, or °iber that could cause °ire or explosion accidents.
Do not operate near swimming pools or other bodies of water.
When a hoverboard and a kart attachment (sold separately) are being used together, it is NOT ADVISABLE to ride the combo uphill. If you attempt to ride on a steep incline above 5˜10°, a safety mechanism built into the hoverboard will activate, which will shut down your hoverboard automatically.
If this happens, dismount your hoverboard, place it on a °lat surface, wait 2 minutes, then power your hoverboard on again. To reduce the risk of injury, adult supervision is required.
Never use in roadways, near motor vehicles, on or near steep inclines or steps, swimming pools, or other bodies of water. Always wear shoes, and never allow more than one rider at a time.

RIDING YOUR SYPHER

FAILURE TO FOLLOW ANY OF THE FOLLOWING SAFETY PRECAUTIONS MAY LEAD TO DAMAGE TO YOUR SYSTEM, DAMAGE TO PROPERTY, VOID OF YOUR MANUFACTURER WARRANTY, AND MAY CAUSE SERIOUS BODILY INJURY OR DEATH.

Before using your Sypher, be sure to familiarize yourself with the operating procedures.

OPERATING YOUR SYPHER
Make sure the Sypher is fully charged before initial use. For charging instructions, please refer to “CHARGING YOUR SYPHER” on page 19 Stand directly behind your Sypher and place one foot on the corresponding foot mat (as shown in the diagram below). Keep your weight on the foot that is still on the ground, otherwise, the Sypher may begin to move or vibrate, making it difficult to step on evenly with your other foot. When you are ready, shift your weight to the foot already placed on the Sypher and step on with your second foot quickly and evenly.

Stay relaxed and step on quickly, con°idently, and evenly. Imagine climbing stairs, one foot, then the other. Look up once your feet are even. The hoverboard may vibrate or spin in one direction if weight and pressure are applied to only a one-foot mat. THIS IS NORMAL.

Find your center of gravity. If your weight is distributed correctly on the foot mats and your center of gravity is level, you should be able to stand on your Sypher just as if you were standing on the ground. On average, it takes 3˜5 minutes just to get comfortable standing on your Sypher and maintaining proper balance. Having a spotter will help you feel more secure. The Sypher is an incredibly sensitive device; it senses even the slightest bit of motion. Having any anxiety or reservation about stepping on may cause you to panic and trigger unwanted movement.

When you °irst begin using your Sypher, the fastest way to move in your desired direction is to focus in that direction. You will notice that just thinking about which way you would like to go will shift your center of gravity, and that subtle movement will propel you in that direction.

Your center of gravity determines which direction you move and your speed. Stand straight up to come to a complete stop. As shown in the diagram below, tilt your center of gravity in the direction you wish to move. To turn, focus on the direction you wish to turn and stay relaxed. Apply pressure on your right foot to turn right and apply pressure on your left foot to turn left. To avoid danger, do not turn sharply or at high speeds. Do not turn or ride quickly along slopes, as it may cause injury.

As you get comfortable on the Sypher, you will notice it becomes easier to maneuver. Remember at higher speeds, it is necessary to shift your weight when making turns to maintain your stability. Bend your knees if you encounter bumps or uneven surfaces, then dismount and carry your hoverboard to a safe operating surface.

Dismounting your hoverboard can be one of the easiest steps, yet when done incorrectly, may cause you to fall. To properly dismount from a stopped position, lift your dominant leg up and set your foot down on the ground behind you (STEP BACK). Then, step o˛ the hoverboard with your other foot, as shown in the diagram below. Make sure to lift your feet completely o˛ the foot mat to clear the hoverboard when stepping back to dismount. Failure to do so may send the hoverboard into a tailspin.

SPEED AND WEIGHT LIMITATIONS

Speed and weight limits are set for your own safety. Please abide by the limits listed here in the manual.

Maximum Speed: 7 mph
Maximum Weight: 220 lbs
Minimum Weight: 44 lbs

Riding the Sypher while exceeding the weight limit may increase the possibility of injury or product damage. When max speed is reached, the Sypher will beep to alert the user and tilt the rider slowly back to prevent injury.

OPERATING RANGE
The Sypher can travel up to 7 miles on a fully charged battery under ideal conditions. The following are some of the major factors that will affect the operating range of your Sypher.

Terrain: Operating range is highest when riding on a smooth, °lat surface. Riding uphill and/or on rough terrain will reduce operating range significantly.
Weight: A lighter user will have a higher operating range than a heavier user.
Ambient Temperature: Please ride and store the Sypher at recommended temperatures. This will maintain the operating range, battery life, and overall performance of your Sypher.
Speed and Riding Style: Maintaining a moderate and consistent speed while riding produces a maximum operating range.
Traveling at high speeds for extended periods of time, frequent starts and stops, and idling will decrease the overall operating range.

BALANCE & CALIBRATION

If your Sypher is unbalanced, vibrating, or not turning properly, you can follow the steps below to calibrate it:

First, place the Sypher on °lat ground or the °loor.˙The foot mats should be even with each other and not tilted forward or backward. Make sure the charger is not plugged in and the hoverboard is turned o˛.
Press and hold the power button for a total of 10˜15 seconds. The hoverboard will turn on, and the battery indicator will light up.
After the light °lashes 5 times consecutively, you may release the power button. Turn the hoverboard o˛ and then back on. Calibration is now complete.

SAFETY ALERTS

If a system error occurs or an improper operation is performed while riding the Sypher, the device will alert the user in a variety
of ways. You will notice the running indicator light will turn red and you will hear a beep sound, alerting you to take precautions and cease operation. The hoverboard may stop suddenly. The following are common occurrences that will produce safety alerts. These notices should not be ignored, and appropriate action should be taken to correct any improper operation, failure, or errors.

Unsafe riding surfaces (uneven, too steep, unsafe, etc.)
The battery voltage is too low.
The Sypher is still charging.
During operation, the platform self-initiates to tilt due to excess speed.
The hoverboard is overheating, or the motor temperature is too high.
The Sypher has been rocking back and forth for over 30 seconds.
If the system enters protection mode, the alarm indicator will light up and the hoverboard will vibrate. This typically occurs when the battery is about to run out of power.
If the platform is tilted forward or backward more than 10 degrees, the Sypher will power o° and stop suddenly, possibly causing the rider to lose balance or fall o°.
If any or both tires are blocked, the Sypher will stop after 2 seconds.
When the battery level has depleted below protection mode, the Sypher will power o˛ and stop after 15 seconds.
If a high discharge current is produced during use (such as driving up a steep slope for a long period of time), the Sypher will power o˛ and stop after 15 seconds.

CHARGING YOUR SYPHER

Make sure that there is no dust, debris, or dirt inside the port.
Plug the charger into a grounded wall outlet. The charging indicator light on the charger will be green.
Connect the charging cable to the power supply (100V˜240V, 50Hz/60 Hz).
Align and connect the 3-pin charging cable into the charging port of the Sypher. DO NOT FORCE THE CHARGER INTO THE CHARGING PORT, AS THIS MAY CAUSE THE PRONGS TO BREAK OFF OR CAUSE PERMANENT DAMAGE TO THE CHARGING PORT.
Once attached to the hoverboard, the charging indicator light on the charger should change to red, indicating that your device is now being charged.
When the red light on your charger turns to green, then your hoverboard is fully charged. A full charge may take up to 5 hours. While charging, you will see a red light.
If you charge the hoverboard while it is powered on, you will see a yellow °lashing light on the hoverboard that indicates it is charging.
After fully charging your Sypher, unplug the charger from your Sypher and the power outlet.

BATTERY CARE / MAINTENANCE

BATTERY SPECIFICATIONS

Battery Type: Rechargeable lithium-ion battery
Charge Time: Up to 5 hours
Voltage: 25.2V
Capacity: 4.0 Ah

BATTERY MAINTENANCE

The lithium-ion battery is built into the Sypher. Do not disassemble the Sypher to remove the battery or attempt to separate it from the Sypher.
Use only the charger and charging cable supplied by Hover-1. Use of any other charger or cable may lead to damage to the hoverboard, overheating, and risk of °ire. Use of any other charger or cable voids the manufacturer’s warranty.
Do not connect or attach the Sypher or the battery to a power supply plug or directly to a car’s cigarette lighter.
Do not place the Sypher near a °ire or leave it out in direct sunlight. Heating the Sypher can break or ignite the battery inside the device.
Do not continue charging the battery if it does not recharge within the specific charging time. Doing so may cause the battery to become hot, rupture, or ignite.
To preserve natural resources, please recycle or dispose of batteries properly. This product contains lithium-ion batteries.
Local, state or federal laws may prohibit the disposal of lithium-ion batteries in ordinary trash. Consult your local waste authority for information regarding available recycling and/or disposal options.
Do not attempt to modify, change, or replace your battery.
Failure to follow the safety precautions listed below could lead to serious bodily injury or death.
Do not use your Sypher if the battery begins to emit odor, overheat, or begins to leak.
Do not touch any leaking materials or breathe fumes emitted.
Do not allow children or animals to touch the battery.
The battery contains dangerous substances. Do not open the battery or insert anything into the battery.
Do not attempt to charge the Sypher if the battery has discharged or emits any substances. In that case, immediately distance yourself from the battery in case of °ire or explosion.
SEEK IMMEDIATE MEDICAL ASSISTANCE IF YOU ARE EXPOSED TO ANY SUBSTANCE THAT IS EMITTED FROM THE BATTERY.
To avoid damage to the Sypher’s internal circuitry, do not expose it to liquid, moisture, or humidity.
Do not use abrasive cleaning solvents to clean the Sypher.
Do not expose the Sypher to extremely high or low temperatures, as this will shorten the life of the electronic components, destroy the battery, and/or distort certain plastic parts.
Do not dispose of the Sypher in °ire as it may explode or combust.
Do not let the Sypher come into contact with sharp objects, as this will cause scratches and damage.
Do not allow the Sypher to fall from high places, as doing so may damage the internal circuitry.
Do not attempt to disassemble the Sypher.
Use only the charger provided by Hover-1.

FCC STATEMENT

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: this device may not cause harmful interference, and this device must accept any interference received, including interference that may cause undesired operation. Please note that changes or modi°ications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

FCC INSTRUCTIONS FOR A CLASS B DIGITAL DEVICE OR PERIPHERAL
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment o˛ and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment to an outlet on a circuit di˛erent from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.