Gba micro trouble

[jparish1977]

So I have a gba micro that won't do a derned thing. The light flash once as it is plugged in, then nada. I replaced the battery, lights showed it was charging, but wouldn't turn on. Left it charging over night, now I'm back to where I started, only with a new battery.

Did I get a bad battery or is the micro pooched?

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[levi]

Sounds fritzed to me. You have got a game cart inserted, right? I don't think they do anything without a cartrdige in them.

 

[jparish1977]

I tried several (all work just dandy on my retron5 and revo)

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[levi]

It could still be a number of failures though, all of which would require an SMT reflow workstation to fix however. I take it you've looked at the board to identify water damage or fire, if present?

 

[jparish1977]

I fully disassembled it and I do see some corrosion near the headphone jack

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[levi]

Hmm, the CPU die is on the other side of the board, under the screen, at least for the ARM core. I think it should still have a z80 core somewhere, even though those units no longer support gameboy/color games, because it's used by some games. I've a feeling it might also be involved in validating the cartridge, but those days a z80 core could be labelled as almost anything and I can't spot it.

 

[elwing]

There's also good chance that the Z80 is packaged with the main CPU...

 

[jparish1977]

I'm going try try and get back to this next weekend. I wound up getting another used micro, but I still wanna see if I can't get this guy going, though from the comments so far do not inspire a lot of hope

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