Lg 37 lc2db

[LEEDASH]

Re: Lg 37 lc2db

thanks works ! this site you go on is it only lg models ?

[LEEDASH]

Re: Lg 37 lc2db

hi does this site do other manuals ? selldoor

[LEEDASH]

Re: Lg 37 lc2db

ok,changed bulging cap to see if i could solve the no sound issue,still dont know if there is any sound,as when trying to get a channel tuned the set all went 'black' and no the green start up light flashes around 5-7 times ? so back to square one.

[tom66]

Re: Lg 37 lc2db

Bad 3.4V will cause HDMI and Freeview to not work either...

[LEEDASH]

Re: Lg 37 lc2db

will this also cause the set not to start up ? which it is doing now.

[tom66]

Re: Lg 37 lc2db

Eventually... sometimes will only work from remote, or from side buttons, or never...

[LEEDASH]

Re: Lg 37 lc2db

but seems like the likely culprit

[tom66]

Re: Lg 37 lc2db

Quite possibly, though I did replace the same cap and it did not resolve the problem, so I swapped the PSU. Cheap enough.

[LEEDASH]

Re: Lg 37 lc2db

where is this 3.4v cap ?

[tom66]

Re: Lg 37 lc2db

It's the one you replaced, I think. Do you see the 3.4V label next to the connector?

[LEEDASH]

Re: Lg 37 lc2db

no i changed a blown one 16v 680uf

[LEEDASH]

Re: Lg 37 lc2db

[LEEDASH]

Re: Lg 37 lc2db

Hi excuse the picture but the capacitor with the three prongs that's screwed in,does it look blown to you ?

[DakotaKid]

Re: Lg 37 lc2db

You need to change ALL of the capacitors on the power supply, not just the one that appeared to be blown. In 99% of the cases with THIS LG set, the other capacitors have also failed even if they don't show it visibly. I had one and read of several other that required ALL of the power supply capacitors to be replaced before it would function properly again.

That "capacitor" with three prongs that is screwed to the heat sink is a voltage regulator. It can be tested but you should replace the remaining capacitors (the cylinders with the silver tops) before proceeding further. I can assure you, you will end up replacing all of the capacitors sooner or later so save yourself some agony and go ahead and do them now. For less than $15 you will probably have a functioning set.

[LEEDASH]

Re: Lg 37 lc2db

Seems a bit excessive but worth a shot,what do you know about a cap with 3.4 in the board what I can't see.

[DakotaKid]

Re: Lg 37 lc2db

Seems a bit excessive but worth a shot,what do you know about a cap with 3.4 in the board what I can't see.

Not really excessive at all considering this set has a history of MULTIPLE bad caps in the power supply in ADDITION to those that are visibly damaged or leaking. A bulging or leaking cap is nearly always bad but a cap with no visible problems can easily be bad also. It would seem like an excessive amount of effort to search elsewhere for the problem when there is a high probability of additional bad caps in the power supply.

[LEEDASH]

Re: Lg 37 lc2db

I have x2 1000uf 25v caps which are placed in 234 and 237 positions,Is it ok to change these first,until i purchased the rest ?

[DakotaKid]

Re: Lg 37 lc2db

sure, you can do them one or two at a time until it works if you want. It just won't stabilize until you get all bad ones replaced. On this power supply it is just easier to replace all of them for the small expense than to guess at which might be bad or not and have to take things apart again if you didn't get all of the bad ones. But there should be no real harm in replacing a couple now and the others later. If it fixes it then you might even get by without replacing the others.

[notsogentle]

Re: Lg 37 lc2db

I have this set on my workbench right now. Bought the cap replacement kit and did them all. friend said it worked for 15 hours and will not work anymore. powers on, green light, no sound or picture. all output voltages on the PS are good except for the ones labelled 6.6V, they are only outputting 0.5v

should i just change the board or you guys know any tricks lol

thanx in advance I love this forum