I recently found a NeoGeo AES. The unit works fine, but I have a little problem with it. Well, not a problem, but a situation:
Using a cable modem power supply 9V 3A tip negative: doesn't work
Using a multivoltage regulated AC adapter at 9V 1.8A tip negative: doesn't work, because of the <2A amperage, I assume.
Using a multivoltage regulated AC adapter at 7.5V 2.5A tip negative: the screen goes up for a second
Using a multivoltage regulated AC adapter at 6V 2.5A tip negative: works
Using a multivoltage regulated AC adapter at 5V 2.5A tip negative: works
After that I thought that maybe the internal voltage regulator was somehow broken but the thing is, I couldn't find it. Where is it located? It's a NEO-AES board if that helps.
What I would like to do is to be able to use the cable modem power supply.