Lenovo G510 LA-9641P I7

[Prosatanosz]

Hi!

After plug in charger 3/5V goes on for 3 seconds. Then off, and died. Need unplug charger a while, and the same symptome. Any idea?

Thx

[lapfix]

Re: Lenovo G510 LA-9641P I7

First, visually inspect all the components , than measre the Impedance on all coils/jumpers to see if there is short.

[Prosatanosz]

Re: Lenovo G510 LA-9641P I7

Ok. There is no short, or damage. Bios rewritten, cpu changed, cmos battery removed. The first thing was a shorted yellow cap on the 19v rail. I was so happy to find it........

[ktmmotocross]

Re: Lenovo G510 LA-9641P I7

Ok. There is no short, or damage. Bios rewritten, cpu changed, cmos battery removed. The first thing was a shorted yellow cap on the 19v rail. I was so happy to find it........

still the same symptoms?

[Prosatanosz]

Re: Lenovo G510 LA-9641P I7

Yes

[ktmmotocross]

Re: Lenovo G510 LA-9641P I7

do u have 3V and 5v reg voltage on 3/5V chip ?
do u have 19V after 5secons?

[Prosatanosz]

Re: Lenovo G510 LA-9641P I7

3V/5V ok for 3 seconds, 19V allways ok.

[ktmmotocross]

Re: Lenovo G510 LA-9641P I7

and reg voltages?

[bob42]

Re: Lenovo G510 LA-9641P I7

Check + 3VLP on pu401 5pin

[Prosatanosz]

Re: Lenovo G510 LA-9641P I7

Sorry, i give up.

[Mazorca]

Re: Lenovo G510 LA-9641P I7

Check power button board if it has one, I just had a toshiba c55-B that displayed same simptoms, on for 2-3 seconds, screen lit up, and then turned off. Possible liquid damage on board.