Aspire 4750 4750g no power

[snsent]

HI,

I got Acer Aspire 4750 with NO POWER / NO CHARGING problem. Already change both of 220uf 6.3V but still got same result. I also reprogram BIOS IC but result still same. Please help me.

Thanks

[dj_ricoh]

Re: Aspire 4750 4750g no power

Check for diods near dc connector.

If you find lift it up and your good to go.

Diodes in acer near dc connector are for discharge. They tend to fail and open and make short to ground.

[sasser]

Re: Aspire 4750 4750g no power

dj_ricoh i found pq32 is low resistance to gnd. but not check diodes that u mention.

[kafarda]

Re: Aspire 4750 4750g no power

For my own case, I reprogrammed the bios chip (25Q32BV) but computer (Acer 4750g i5) doesnt turn on (using power supply or battery), just a ink of greenish led at the ethernet port when inzerting charger, any suggestion please.