42ln5400 dead.

[Rickig]

I have the above mentioned lg tv
It was completely dead. I removed back and replaced fuse on main board. Now I get red light when on standby. When taking out of standby it flashes 2 times and goes out, no backlight nothing.
Any ideas

[Hamie]

Re: 42ln5400 dead.

Put the mainboard in the oven for for 10-15 mins.
Remove then heat gun it.

Ghetto reflow.

[Agent24]

Re: 42ln5400 dead.

if the fuse was blown, probably something else is also blown. Look over the board for burnt\damaged components.

[Rickig]

Re: 42ln5400 dead.

Nothing looks bad. Couple FEts testing oc so Ordered a new psu off eBay only £15 so swap that first.

[Rickig]

Re: 42ln5400 dead.

Fitted new psu. No change. Refitted old psu.
Stripped screen and found 2 duff led. Repaired the leds and got back light working but found I have sound and backlight but nothing on lcd. 12v to tcon.
Ordered a tcon as there cheap enough but wondered if it's more likely to be a main board fault?

Any advise welcome

[Lukkas]

Re: 42ln5400 dead.

Hi,
do you have some result with your repair? I have same problem :/