Re: LG 37LC2D No Sound, and No Channels
Is the 3.4V rail measuring low still?
Is the 3.4V rail measuring low still?
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: LG 37LC2D No Sound, and No Channels
when i turn on tv its going up/sec from 1.3 to 2.7Comment
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Re: LG 37LC2D No Sound, and No Channels
now is 2.8 still going very slowly up
after 15 min starting going down [now is 2v]
and from 2v going up again [2.7v]Last edited by ergela; 09-05-2013, 07:24 AM.Comment
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Re: LG 37LC2D No Sound, and No Channels
It is difficult to know what the fault is, then. Have you noticed any change in the 3.4V at all? The problem was fixed in someone else's TV by replacing that chip, though they are unclear on exactly what they did to replace it or what part they replaced it with.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 37LC2D No Sound, and No Channels
3.4v Its stop on 2.8 v. I don't want to give up with this and buy a new board. I will try replacing this 2 chip with a new one just tell me , I should look for IRF7807Z?Comment
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Re: LG 37LC2D No Sound, and No Channels
I wouldn't expect those to cause the problem to be honest.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 37LC2D No Sound, and No Channels
i have a similar problem, had crackling for a while every time i turned it on after it had been off over an hour. the other day it crackled really loud then i had no sound except a high pitched sound out the left speaker. opened it up and there were 5 caps rising. changed all of them and tried it again, the high pitched noise was still in the left speaker but the crackling came back, i could also hear a slight white noise in the background like something was a bit better. should i try some of the voltage tests or just buy a new psu board???? i don't mind paying the £25-50 that i've seen them for i don't really have the time or quality tools to check and change everything in the board. Its an LG 42LT75Comment
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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... -
Hello, i had this amp sitting in the closet knowing that none of the channels were working. After taking it all apart i found 4 bulging main filter caps so i went ahead and replaced those with low ESR kmet caps. However after doing this it only restored sound to Surround L, Surround R, and Center channel. The main speaker fuse on the transformer F905/F906 keeps blowing so i decided to remove all of the transistor's on those 4 channels and measure them. All transistors appear to be in good working order(turned receiver on with none of them installed and fuse still blows). Checked dual emitter resistors... -
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... -
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... -
This specification for the HP ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar boardview and ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please...09-12-2024, 02:30 PM
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