i have a 37 inch westinghouse lcd tv and when i turn it on it powers up and i can see video but its all distorted, the video is flashing and looks like there are lines. It was working just a few days ago just fine. ive taken it apart and i dont see any burn marks or blown caps ill up load some pics now.
westinghouse lvm-37w1
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Re: westinghouse lvm-37w1
Incredible.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. -
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For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: westinghouse lvm-37w1
The way that you would test it is to put in a new one. If you type in the model number (lvm-37w1) into ebay search, you'll find that there are some boards available for this unit. I'd try the one for $20 first. Hell, why not? lolLast edited by Dgtech; 01-19-2011, 09:42 PM.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: westinghouse lvm-37w1
Well i found out that it is the Tcon board that is causing my issue and this is how i came to that conclusion. First when i was looking at the screen i saw that the image its self was distorted not just sections of the screen so i figured chances are good that its not the panel. so i dismantled the tv again and i got to the Tcon board and applied a trick i learned while servicing Xbox 360s and nvidia chipsets on laptops which is to super heat them with a blow torch to "reflow" the chips. I figured that if i got a change in image either better or worse i would know that the Tcon board was the issue. once i flowed the chips on the Tcon i put everything back together and turn on the tv and i got a crystal clear image again. so now im ordering a new Tcon board as the reflowing chips doesnt serve as a long term fix but did help me figure out what was going wrong on my tv!Comment
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Re: westinghouse lvm-37w1
Just a buying hint. Based on my single experience buying a tcon, it looks like many TV makers buy their tcon cards from other manufacturers. If you search for the tcon part number and not the tv model number, you may find a larger selection and cheaper price on ebay.
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Re: westinghouse lvm-37w1
Just sort of semi-necroing the thread to add more information.
The power board for this item is somewhat common in various TVs, apparently - it's a DPS-336AP. (Strange mix of capacitor brands)
Unfortunately, the main controller board is _not_ common. It's a L37AVW43AAB, but the most common part number is 5600110382 (sometimes a L37A, which is actually the _board_ part number, not the full assembly part number)
I'm currently troubleshooting one of these my brother picked up for nothing. You can test the power board itself by putting a jumper on the PSON pin to the ground pin right next to it (SATA/SCSI drive jumpers are just the right size. Old IDE jumpers are too large). That will trigger off the power board itself, and then you can test the various voltages to ground (18, 120, 5, etc) Once I jumpered mine, the screen lit up, and the lights were steady. The picture, on the other hand, looked like someone was overlaying Light Cycle end maps as a screen saver. Once I pulled the main controller board loose, the bottom actually looks like someone spilled crap on it, and it dried - but it's not showing signs of burning - just shmutz on the board in patterns around certain components. Now I have to ask him if he wants me to invest the $65 in a board from a broken screen unit to see if that fixes it. I'm pretty sure that the problem is _not_ in the button controller board, but in the main controller/display driver itself.Comment
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Re: westinghouse lvm-37w1
One more update.
After using a heat gun to reflow some of the parts, I plugged it back in, and the unit _would_ power up. (it ignored the power button before, and I had to forcibly jumper the circuit) No menu or input options, but it's definitely a funky board.
I may put it in the oven for 15 minutes or so to get an even reflow before thinking about spending $70 on an old TV.Comment
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