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| Click here to select a new forum. | | I've probably destroyed my 5500/275 logic board | Posted by: mstrecktias on 2018-05-06 05:24:14
Hi all!
I have a 5500 that I tried to fire up the other day. Before I put it to storage last time, it was working. The PRAM battery has since long been removed, and I've connected an adapter with variable voltage setting (1,5-12 V).
I plugged in the adapter as well as the main power cord and flipped the main switch on the computer. It powered on, the fan was running (louder than I remembered), the green light on the front was lit, but no picture. I flipped the main switch back off and then on again. Still no picture. I flipped it back and forth one more time and then...nothing. I pulled out the plugs and said farewell, it had to happen sometime... But then I noticed: the adapter connected to the PRAM battery socket was set to 12V!!! Crap!
Anything I can do except to try find a replacement logic board? 🤔
| Posted by: Byrd on 2018-05-06 16:31:09
Hi mstrackias,
Welcome - 12V aside (it would have booted without a PRAM battery), I'd strip it down to a single known stick of working RAM, reseat cache card and press the little CUDA switch on the motherboard. Hopefully all may not be lost!
JB
| Posted by: AlpineRaven on 2018-05-23 13:18:48
I agree above said - it can boot without PRAM battery. Check RAM and remove anything that is connected to the board even when you re-insert the tray back in make sure nothing is jamming up the connectors.
The fan on the CPU would have dried up bearings hence noisy
Cheers
AP
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