Re: Lg 37 lc2db
thanks works ! this site you go on is it only lg models ?
thanks works ! this site you go on is it only lg models ?
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Re: Lg 37 lc2db
hi does this site do other manuals ? selldoorComment
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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.Comment
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Re: Lg 37 lc2db
Bad 3.4V will cause HDMI and Freeview to not work either...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 37 lc2db
will this also cause the set not to start up ? which it is doing now.Comment
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Re: Lg 37 lc2db
Eventually... sometimes will only work from remote, or from side buttons, or never...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 37 lc2db
but seems like the likely culpritComment
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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.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 37 lc2db
where is this 3.4v cap ?Comment
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Re: Lg 37 lc2db
It's the one you replaced, I think. Do you see the 3.4V label next to the connector?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 37 lc2db
no i changed a blown one 16v 680ufComment
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Re: Lg 37 lc2db
Attached FilesComment
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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 ?Comment
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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.Comment
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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.Comment
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Re: Lg 37 lc2db
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.Comment
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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 ?Comment
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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.Comment
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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 forumComment
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so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing... -
Good day ladies and gentleman!
I am currently trying to repair a Grundig Vision 9 37 9880 T USB LCD TV for a friend that has a weird audio problem. Basically everything works fine except for the heavily distorted sound when the Subwoofer module is connected and there is a buzzing sound coming from the PSU PCB.
This seems to be a rather rare TV so there is not much prior on topic help to be found however a service manual is available at the usual sources (Electro Tanya i.e.).
I think the PSU buzzing comes from one of the coils near the bridge rectifier but... -
Picked up a bahemoth plasma TV not too long ago and just now getting around to looking at it.
No picture but you hear the TV static (white noise) playing loud and clear.
The back was already taken off (and no screws were provided) as the previous owner had already taken a look.
But it seems they didn't get too far and just left it.
When I first took a look I was amazed at how pristine the inside looked.
Its as if the TV had been in a time capsule.
Caps looked like they were just pulled off the self.
Copper coils had no sign of corrosion on... -
This is my first Craigslist freebie fix attempt. 50 inch LG Plasma TV Previous owner said over time it was struggling to turn on, it would take 4-5 times to turn on, the one day it just did entirely. I took it home and plugged it in, I her a click, then a second later another click, and nothing. Dead as a doorknob
So I took the back off and check voltages. The power supply appears fine, I checked the VS, VA, and 5V voltages and they all measured correct, on the power supply board and on the display boards (Y and X boards). All the fuses are fine
Following a YouTube videos... -
Hello to the forum.
My name is Christos, I am new to the forum here and i am posting from Greece.
So i have this old German sound card from Marian, called Trace Alpha. To be exact i have 2 of them and i use them professionally for my small FM radio station here. The first one works like a charm, but the second one does not work at all.
To be more specific in the same exact pc with windows 7 (i even tried 32bit) the one works while the other doesn't.
So i tried asking for a schematic from the company and they would not give me one. Instead they...
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