.:madworm:.'s photos with the keyword: sega

Sega Game Gear fixed C7

Sega Game Gear fixed C7

.:madworm:.
06 Feb 2009 153
These come off easily, just heat and pull.
Sega Game Gear security bolt

Sega Game Gear security bolt

.:madworm:.
06 Feb 2009 273
This is evil !
Sega Game Gear fixed C5

Sega Game Gear fixed C5

.:madworm:.
06 Feb 2009 186
These come off easily, just heat and pull.
Sega Game Gear soundcard

Sega Game Gear soundcard

.:madworm:.
05 Feb 2009 138
This is the corpus delicti. At least that's what I hope. The TDA2822M is just a dual amplifier. It gets 2V supply voltage from the main PCB and about +-100mV sound signal. If that's OK must still be checked. The datasheet gives a minimum of 2V as supply.
TDA2822M test circuit

TDA2822M test circuit

.:madworm:.
05 Feb 2009 185
Audio amplifier used in Sega Gamegear. The 470µF caps were changed to 47µF on the gamegear's sound-ampifier PCB and they went bad (C=0,R>>1). Therefore no current and thus no sound anymore. The other electrolytic caps may be bad as well, but they don't seem that critical. The small caps are SMD parts and still work (most likely ceramic or whatever).
Sega Game Gear fixed caps

Sega Game Gear fixed caps

.:madworm:.
06 Feb 2009 167
The old caps must have dried. I replaced them with some 45µF ones I could find. The internal speaker works again (middle cap). The other one is for the 2nd channel which I haven't tested yet. No earphones at hand.
sega gamegear backside

sega gamegear backside

.:madworm:.
06 Feb 2009 566
The top middle screw is some kind of security bolt. Once you've managed to get it out, DON'T put it back. Keep it as a token of victory!
Sega Game Gear fixed sound

Sega Game Gear fixed sound

.:madworm:.
06 Feb 2009 204
A piece of art. 20 years old. The video output is also somewhat blurred. I've read it can be fixed by replacing a whole lot of other caps, but as I don't really play with it anymore it's not necessary (yet).
Sega Game Gear

Sega Game Gear

.:madworm:.
05 Feb 2009 161
The whole thing.
Sega Game Gear powersupply

Sega Game Gear powersupply

.:madworm:.
05 Feb 2009 135
Still works.
Game Gear sound wave

Game Gear sound wave

.:madworm:.
05 Feb 2009 155
0.5ms/div / 50mV/div. It is set to 5mv/div on the scope, but I used a 10:1 probe. DC offset not shown here.
Sega Game Gear soundcard

Sega Game Gear soundcard

.:madworm:.
05 Feb 2009 128
Sega Game Gear soundcard

Sega Game Gear soundcard

.:madworm:.
05 Feb 2009 117
I found some black stuff there. Wiped it with alcohol.
Sega Game Gear soundcard

Sega Game Gear soundcard

.:madworm:.
05 Feb 2009 126
Tektronix 314

Tektronix 314

.:madworm:.
05 Feb 2009 187
My old scope. Already with storage function. This scope is really nice, it even runs with 12V from battery. Still I will buy a digital one some day.
Sega Game Gear soundcard

Sega Game Gear soundcard

.:madworm:.
05 Feb 2009 165
I hope this is just some dirt. If something fried, well...