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joecool85

macrumors 65816
Original poster
Mar 9, 2005
1,355
4
Maine
Ok, I was playing around with my LCII which didn't work and I got it to start up yesterday by throwing in a drive I had pulled from a powermac 7200/90 that had 7.6.1 on it. It started up and ran fine, so today I was going to do a clean install on that drive and call it good. This morning, it wouldn't start. I took the cover off and checked the battery (which I had replaced last year in an attempt to fix it then) and it was corroded on the neg side some. I cleaned it up and tried it, no good. I had a spare battery (tested at 3.67v, the old one tested at 3.64 so it shouldn't have been a problem) and I cleaned up the prongs on the board, threw it in, and no go again. Anyone have some ideas as to why this thing won't start? It has 10mb of RAM, and I'm using an adapter to drive a VGA LCD monitor. I know that part works, because it did it yesterday just fine.
 
DougTheImpaler said:
sounds like a dead power supply to me, assuming "doesn't start" means that it doesn't spin up, no bong, no nothing.

Oh, I should have been more specific. It spins the fan, spins the hd, but no apple startup noise and nothing on the screen. I tested the molex power plug going to the hd and it had the standard 5v and 12v, so the power supply seems fine.
 
perhaps it has bad vram chips...if they were bad nothing would show up on the monitor, but the computer would still turn on...
 
macEfan said:
perhaps it has bad vram chips...if they were bad nothing would show up on the monitor, but the computer would still turn on...

There is probably no way to test that huh? And also, what are the odds that would go bad from yesterday to today? Seems unlikely at best to me.
 
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