Note on archived topics.
04-19-2012 07:15 PM
04-24-2012 08:53 AM
OKay So I did this. Take the MB Battery out left it set over an hour and put it back in and turned it on. well I came on and is still running as far as I know. BUT I have no screen. None at all. Any Suggestions?
09-26-2012 03:05 AM
Handed a laptop today to see if I could figure out what was wrong (DV6700), ended up finding this thread. Exact same symptoms: Constant attempts to power up, immediately off and then back on again a few seconds later: repeat ad nauseum.
Obviously a widespread problem. Lots of complaints of "HP Quality". Perhaps, but I think that AMD/Nvidia share a heavy portion of the blame. It looks like the main problem is the Nvidia chip desoldering itself from the board. Yes, HP could have (should have) updated the machines with a firm contact copper heatsink for all the returns and eliminated the transfer pad as soon as the problem was known. But at the same time it seems obvious that the chips were providing more heat than spec'd. I am going to take a stab at reseating the Nvidia chip and using a copper shim and Arctic Silver 5 for cooling. Might replace the fan module as well as that could also be a factor: fans fail, causing systems to overheat. AMD has always been behind Intel in dealing with heat. For many years, if Intels start getting hot, they automatically throttle back speed to keep from exceeding temp threshholds. If AMD/nVidia had done that with these, then you wouldn't have the problem of the chip cooking the solder. That said, I have long used AMD's in desktops and I use really good cooling. All my laptos have been Intels though.
Anyway, this is why I avoid the HP consumer machines and go for the business class machines instead (ProBooks and EliteBooks). The customer service is far better than with the consumer line and the things are built better. I won't buy a Pavilion, but my Elitebook will stand up against the toughest competition - even a ThinkPad.
09-26-2012 04:27 AM
Having just completed disassembly of the machine in question, I found that there is one more part of these boards which could be of significant note. Also cooled by a heat transfer pad are two transistors on the other side of the processor. If these are overheating they are highly likely to cause the on and off issue, in fact, that is right up their alley, much more likely than the nVidia chip. So if anyone is looking at rying this repair, be sure to also shim those.
11-15-2013 07:41 PM
same thing with my hp pavilion elite e9120y desktop.. able to turn on the power but turns itself off after few seconds and repeats nonstop until i unplug the power cord. i just replaced the motherboard and powersupply. both new and same replacements. i dont know what the cause could be. please help.