Archive for the ‘Sega’ Category

Sega GameGear Audio & Display Fix

Mittwoch, Dezember 2nd, 2009

I received a GameGear without sound and the contrast of the handheld was terrible.

So I used a searchmachine and found the following sites:

AudioFix

For Display troube

If you don’t want to make it yourself, we can take care of your gamegear

Part  #1 Audio Fix

No Audio :-(

No Audio :-(

bad capacitor

bad capacitor

In most cases it it this capacitor 47uF 6.3V (C7)
Please change 47uF 6.3V (C5) too, because if you make use of a headphone.

If you can’t find it with 6.3V you can make use of one with higher voltage.

replaced, audio is working great again

replaced, audio is working great again

Audio Amplifier Board

DESIGNATOR VALUE
C1
C2
C3
C5
C7
100μ 6.3V
100μ 6.3V
100μ 6.3V
47μ 4V
47μ 4V

Part# 2 Display Fix

The display was dark, the contrast wheel didn’t help, so I changed every elko on the mainboard.  After this the picture was brighter and the contrast wheel works good again.

The original capacitors have some clue under it.  Desolder one side of a capacitor and move it a litte bit. Then you can desolder the other site.

change the marked capacitors

change the marked capacitors

change the two red marked

change the two red marked

when soldering the new ones, look for space in the marked area

when soldering the new ones, look for space in the marked area

when soldering make space at the marked areas. It is needed when closing the gamegear.

Mainboard

ONE ASIC GG TWO ASIC GG VALUE
C68
C43
C45
C55
C54
C48
C49
C1
C4
C14
C48
C11
C31
C49
C35
C45
C44
C38
C39
C1
C3
C14
C48
-
100μ 6.3V
22μ 6.3V
4.7μ 35V
0.47μ 50V
0.47μ 50V
68μ 6.3V
100μ 4V
33μ 6.3V
10μ 6.3V
10μ 6.3V
10μ 6.3V
10μ 6.3V

Update: Bad Contrast Fix for other GameGear Revision

Here you can see all capacitors to be replaced.

Responseable for the bac contrast are: C54,C55,C48,C49 (blue marked Area). But its better to replace all to be sure.

gg1

gg_2_left

gg_3_right

gg_4_replaced_left