Graeme Dargie wrote:
My grandmother had a HP that just died too. My brother took the first stab
at it, describing it as a likely "DC-DC converter" problem, and I was seeing
indication of a bad seat on the CPU. It was working just fine and for the
CPU to become unseated is not likely. I tore that machine apart until I
couldn't figure out how to get the top or bottom plate off that surrounds
the motherboard. I didn't fix it, but we all gave up and she went and
bought another system.
The DC-DC converter is what takes the 18V (or whatever) the mains/battery
supplies, and breaks it out into the 3.3V, 5V, 12V, etc needed to power all
the various components.
Someone pointed me to this service manual http://tinyurl.com/de6luh. You
might find one for yours on the HP site. I suspect something similar has
happened to mine, I'm going to take it to a shop for advice, some of
them will do component level fixes which is cheaper than a new motherboard.
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