McWill REV3.0 LYNX-II LCD Replacement MOD User Guide
- June 10, 2024
- McWill
Table of Contents
LYNX-II LCD Replacement MOD REV3.0
Quick Guide
REV3.0 LYNX-II LCD Replacement MOD
ATTENTION ! Installing the LCD replacement is on your own risk! Your
LYNX-II could be damaged, if you are not able to do this modification!
Liability impossible!
Required materials:
LYNX-kit, VGA connector with screws, 18 wires round about 20 cm (8 inches)
length (IDE cable) n
Remove not needed Parts and 5 Volt check
ATTENTION ! Make sure that all power is off. Disconnect ALL cables.
- Remove R45, R46, R47, R48 and R49 (optional C26) !!!
- Remove L17 coil
- Remove Q13 and Q14 transistors
- Remove C55 and C56 capicitors
- Remove T1 power module (optional)
(see picture below)
!!! Now check the 5 Volt with a voltmeter on VCC point (see 3rd step). If the
voltage exceeds 5.45 Volt, repair your LYNX ! Otherwise the LYNX mod will be
damaged
!!! (For testing you need to insert a cartridge!) 
VGA connector (if needed)
Connect the pins 6, 7 and 8 together.
Solder 6 wires to the pins 1, 2, 3, 13, 14 and (6, 7, 8) to the VGA connector.
!!! Use hot glue for the internal screws of VGA connector. Otherwise the screws may cause short circuit !!!
Power and backlight button
Now solder one wire to VCC (+5 Volt) and one wire to GND (Ground).
The wire of PAD4 has to be soldered to U11 (74HC74A) at pin 2
Soldering data lines
Last step is to solder the last 9 wires. Above you can see the LYNX-II mod and on the picture below you can see the LYNX-II. First solder all 9 wires to the
LYNX-II mod. After that solder the other side of the wires to the LYNX-II.
You can use RES or TPR, not both together !
For LYNX-II with chipset 1 (C104129-001) you have to use TPR (testpoint 27)
only!
For using TPR jumper LNX_1_2 is closed, for using RES jumper LNX_1_2 is open !
If you made everything correct, you’ll love it!
!!! At last check all connections again !!!
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