Best to ask on assembler games yesteryeargames there is a lot better repair forum on there with lots of knowledge, the retro thread here is a bit dead here these days.
I feel that's fairly insulting to some of the expertise we have on this site S3M. People like Speedlolita may be young, but he has an understanding of the intricacies of the 16-bit era systems few have. I can state for fact that he's the best modifier/repairer I've ever worked with.
It is fair advice if the issue extends beyond the power supply being wrong.
PRO-POW would indicate this earlier console wants a 5V power supply, latter machines would want a 9V power supply.
Of course, like the AES I purchased faulty, it could just be cracked solder on the power jack. There should be a small LED on the motherboard and if not you could use a multimeter to check if there is continuity between the jack and the rest of the board when powered.
I feel that's fairly insulting to some of the expertise we have on this site S3M. People like Speedlolita may be young, but he has an understanding of the intricacies of the 16-bit era systems few have. I can state for fact that he's the best modifier/repairer I've ever worked with.
You appear to have taken my advise the wrong way Colin, at no point was I insulting speedlolita and his knowledge of the NEO GEO. I'm just saying that assembler games has a lot more posters these days with more advise overall, I know speedlolita posts on assembler games as well so he could also help over there as well.
Even I'm find it far better to post hardware issues over at assembler games these days as you get a lot more reply and feedback to the problem.
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