i am check this model of acer and show only light of rechange and dont switch and some capacitors near procesor and be in shorty when put procesor when i take it of procesor no more in short so who can help about what to check ,i change procesor but again in short so what can be
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Acer Aspire 4520 Power Problem
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Re: Acer Aspire 4520 Power Problem
sorry for my english , my problem is this :I have an acer 4520 that kswitch the light of charging the battery but does not turn, made some measurements near the processor and condesator we found some short, but when you remove the processor are not in short
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Re: Acer Aspire 4520 Power Problem
This laptop has nvidia mcp67 chipset ic which is conttroling switching function
so replace mcp67mv-a2 bga ic ... your problem will be solved
Originally posted by rodion View Posti am check this model of acer and show only light of rechange and dont switch and some capacitors near procesor and be in shorty when put procesor when i take it of procesor no more in short so who can help about what to check ,i change procesor but again in short so what can be
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Re: Acer Aspire 4520 Power Problem
Ya i am 100% sure it is the problem of nvidia MCP67MV-A2 ,just reflow it ,just reflow for temporary testing, until you reball, problem will occur again ,i know the problem laptop charging will be ok ,when you press power on key lights will lite for 1 second,s and turn of just reflow,
Bye
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Re: Acer Aspire 4520 Power Problem
I have aspire 4520 laptop not powering up at all. I started checking from TPS51120 & found 5v & 3.3v are ok. Then checked SIO, on pressing power button it releases 3.3v from both RSMRST & S5_ON pins. Then I found fds8884 was short & replaced. Found power transistor short Q28 (2N7002E) was short & replaced it. But still no power. Please anybody help.
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