LG R380 no power randomly EBR63567605 motherboard

[s_henya]

Hey guys,

I got this laptop atfer the owner gave up on it..
I bought it for 50$
The keyboad and both hinges were replaced just now.
Battery is dead though...

This laptop suffered from water damage..

The problem happens on randomly,
The charging light appears after a sec after plugging in the charger.
I have a 3.3v on power switch.

When i press the power button the laptop tries to power on for a milisec then fails and the charging light apears again.

sometimes (rare) it powers on just fine.

I opened it up and cleaned the corrosion on some parts the pad just been eaten.

Do you think it is possible to fix it or shall i try to find a used board or just sell it for parts.

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

Does anyone has the schematics for this board..

i need some troubleshooting ideas on how to approach this kind of fault.

thanks

[cyberhack]

Re: LG R380 no power randomly EBR63567605 motherboard

Soap and water wash it
If you have ultrasonic bath then use that with Ultrasonic Cleaners

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

cyberhack, i already tried my best with alcohol and a toothbrush.

i think i need to fix those 3 bad components that the pads got eaten..
i dont know what they are caps/coils? and their ratings.

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

I gave up on the old mainboard,

I orderd a used one from ebay,

The laptop is starting normally again.

i have one issue, i can't remember the wifi antenas digram...

i have 4 wires: 2 whites, 2 blacks.

i have 2 wifi cards, i guess one is a 3G modem or something..

could you guide me which goes where? does it even matter?

[ktmmotocross]

Re: LG R380 no power randomly EBR63567605 motherboard

that ol board works fine, just resolder that components. no need to change

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

You didn't understandme im sorry,

The whole laaptop works i don't need to soldier anything.

i need to plug in the antenas cable to the wifi and modem cards.

the problem is i can't remember which goes where....

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

Bad luck with this laptop,
after a few months that it worked great,
the mainboard i replaced died too :-)

i want to try and get 1 board working out of 2 bad ones.

need some help on no power symptom..
i already tested the dc jack,
i got 19vdc on 2 fets..

anything else you would recommend?

[Life Goes On]

Re: LG R380 no power randomly EBR63567605 motherboard

you can try the bios, reprogrammer the bios chip.

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

I never did find out how to do i now if its a bios fault?

After plugging in the AC adapter, i don't get the charger light,
only after a few seconds or minutes (randomly) i have light and i manage to power it on.
Very strange...

[Life Goes On]

Re: LG R380 no power randomly EBR63567605 motherboard

if the charger is ok, it can be the bios, if bios fault laptop won't start.

[s_henya]

Re: LG R380 no power randomly EBR63567605 motherboard

Any recommended programmer i can test the bios with?