LG 32LX2R No Power

[aar5384]

Re: LG 32LX2R No Power

"All came back with 00.0 Except on the AC side Q104 read 250v on centre pin" Which board is this? Main board?

That was from the power board

[selldoor]

Re: LG 32LX2R No Power

OK i checked them all and theres nothing coming thru any of them, but would there be any voltage on them anyway seen as the only voltage going to the mainboard is that from the 5volt line?

Well what usually happens is you have the 5v going to the main board and it does a few tests and tells the power supply to power up fully to produce the 24v. The test signals are usually 3.3v and 1.8v and these are derived from the 5v on the motherboard using the voltage regulators.

So connect it all up and set your meter on 20vdc put the black lead on the
copper groundscrew pad and test the 5v pin on the main board.
Then for now just try for any voltages on any of the voltage regulators.
I couldnt see any fuses - anything on the back of the board?.
We are really stuck with no camera .

[aar5384]

Re: LG 32LX2R No Power

Hi i couldnt see any fuses either and at about 2am i gave up for the night.

This morning though, a bunch of new caps arrived and after an hour i wished id not asked my brother to order me a new soldering iron because it was clearly a £2.99 special offer that was only worth poking humans with for fun, 28 joints unsolderd and 280 joints resoldered with it and the nibs gone, proberbly melted into the solder, and i have a 3 blistered thumb and a scorched middle finger i poked myself just to test it was actually hot.

Anyhow, They worked Its sat behind me on right now playing away, it hasnt exploded .... yet, and there was just one disapointment. No freeview tuner built in, shame that, ohwell my sister can have it lol

[finntricky]

Re: LG 32LX2R No Power

thank you for confirming the cap problems.
i have just got hold of the same tv with just solid standby light.
took it apart and like you said, all caps look fine, anyway i replaced all caps,and now tv is up and running.
thats what i call a quick fix.

[Easky15]

Re: LG 32LX2R No Power

Just got this same set in stuck in standby with red led, Owner says the only way he could get it to work was leave it beside a radiator to heat it up then it would turn on, Does this sound like the same CAP fault? Also was it all caps need replaced or just a few?

[Easky15]

Re: LG 32LX2R No Power

Replaced caps and it's working again.. ;-)