Photos, videos and docs of .:madworm:., with the keywords: "sega"

Sega Game Gear fixed C7

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:58:57 +0000

.:madworm:. has posted:

These come off easily, just heat and pull.

Sega Game Gear security bolt

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:58:43 +0000

.:madworm:. has posted:

This is evil !

Sega Game Gear fixed C5

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:59:11 +0000

.:madworm:. has posted:

These come off easily, just heat and pull.

Sega Game Gear soundcard

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:09:09 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 21:42:41 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:59:23 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:59:33 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Fri, 06 Feb 2009 00:59:51 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:27 +0000

.:madworm:. has posted:

The whole thing.

Sega Game Gear powersupply

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:41 +0000

.:madworm:. has posted:

Still works.

Game Gear sound wave

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:07:44 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:07 +0000

.:madworm:. has posted:

Sega Game Gear soundcard

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:09:19 +0000

.:madworm:. has posted:

I found some black stuff there. Wiped it with alcohol.

Sega Game Gear soundcard

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:48 +0000

.:madworm:. has posted:

Tektronix 314

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:00 +0000

.:madworm:. has posted:

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

nobody@ipernity.com (.:madworm:.) — Thu, 05 Feb 2009 20:08:55 +0000

.:madworm:. has posted:

I hope this is just some dirt. If something fried, well...