Below is a step by step guide to fitting a new LCD of almost any kind.

Note the 3 main versions of game gear in the photo below

VA 1 = revisions 837-9130 / 837-9024 / 837- 8560

VA0 = revisions 837-7996 / 837-7719-01

VA4 and 5 are not compatible with new LCDs

First remove unneeded components 

Green = Fluorescent light parts 

Red = brightness control parts for original LCD

VA0/VA1

• Old lcd
• FL
• L2
• R29/R56
• R29/R57
• fu1
• fu2
• Q2 (if fitted)
• r34
• r33
• r32
• c34/c44
• q6
• r38
• r41
• r43
• r44

Optional parts to remove

These parts are not powered anymore with the parts above being removed so you may leave them unless you want to remove them to make a little fluorescent light with the parts like me :)

• c33/c70
• q3
• q4
• c32/c69
• t1
• c70
• c71
• c44/c54 0.45uF
• c45/c55 0.45uF
• c35/c45 4.7uF

New wire connections

• t10 to t11
• t2 to LCD Csync
• CN1 pin16 and 18 to LCD gnd
• CN1 pin35 to LCD VCC
• CN1 pin42 to LCD GG/SMS
• LCD ribbon pin9 to LCD CL2
• LCD ribbon pin16 to LCD D1
• LCD ribbon pin18 to LCD D0
• LCD ribbon pin 20 to LCD DW
• LCD ribbon pin 39 to LCD D2
• LCD ribbon pin 57 to LCD D3
• FB1 to LCD CLK
• left of c29 to LCD but 1
• right of c30 to LCD but 2
• bottom of c28 to LCD but 3

Extra connections for McWill V2

• VR1 top pin to Vcc 5v
• VR1 second pin from top to LCD Backlight
• VR1 third pin from top to GND 0 v

Extra connections for McWill V3.1 and Chinese 3.1 LCD

• VR1 top pin to LCD PL1
• VR1 second pin from top to LCD PL2