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GC Power LED flashes once

Posted: Sat Sep 13, 2014 6:21 pm
by Unseen
Hi,

is there any repair advice for a PAL Cube that just flashes its power LED once when it is turned on and behaves as a brick-with-fan otherwise? I already found various references to the fuse on the power board on the net, but on this particular cube the fuse appears to be fine (24 milliohms) and swapping the power board with one from a working GC did not change the symptions.

Caused by slipping while measuring on the digital AV port - I may have shorted 3.3V or GND to one of the adjacent VData lines.

Re: GC Power LED flashes once

Posted: Sat Sep 13, 2014 8:12 pm
by ShockSlayer
Sounds like somethings shorting internally then. Have you stripped it down to just the raw GC board + powerboard and turned it on?

SS

Re: GC Power LED flashes once

Posted: Sat Sep 13, 2014 9:01 pm
by Unseen
ShockSlayer wrote:Sounds like somethings shorting internally then. Have you stripped it down to just the raw GC board + powerboard and turned it on?
Yes - with just the power board and main GC board the power lines still shut down after a fraction of a second.

Is there any way to force the power board to stay on so I can try to locate the shorted component by temperature?

Re: GC Power LED flashes once

Posted: Sat Sep 13, 2014 9:20 pm
by iamdablasta
Unseen wrote:
ShockSlayer wrote:Sounds like somethings shorting internally then. Have you stripped it down to just the raw GC board + powerboard and turned it on?
Yes - with just the power board and main GC board the power lines still shut down after a fraction of a second.

Is there any way to force the power board to stay on so I can try to locate the shorted component by temperature?
Sounds like a bad idea.

Re: GC Power LED flashes once

Posted: Sun Sep 14, 2014 12:03 am
by megalomaniac
you could try to remove the AVE to see if the LED will at least stay on....then go from there

Re: GC Power LED flashes once

Posted: Sun Sep 14, 2014 1:19 pm
by Unseen
megalomaniac wrote:you could try to remove the AVE to see if the LED will at least stay on....then go from there
Good idea, doesn't change the symptoms though. I guess I'll just write it off as dead for now.