Westinghouse lvm-37w1 turns off more then once

[electro1]

On sat and weeks before that the set kept turning off screen black blue light illuminated did this 35 times+ I wait 20 seconds to turn back on with remote and it turns off again in 7-10 minutes, I turn it on 10 times or more till it stays on. I removed the metal cage around power supply ran the set today took meter readings I get 12.28vdc top left connector stby 5.04vdc, 0.46 psnd, other connector 18.52vdc and on the last connector on the left side 120v connector I get 264v ac. Set did not turn off at all today with metal cage removed. What could be going bad on the board none of the caps are leaking or bulging backlight is set to 30. Could it be the the power supply causing this problem.

[truep]

Re: Westinghouse lvm-37w1 turns off more then once

You need to find a service manual and see voltage the 18V should be. Most sets use 24V for the iniverters.

[electro1]

Re: Westinghouse lvm-37w1 turns off more then once

The voltages are printed on the connectors of the delta power supply board. Today the tv turned off yesterday it worked great.

[electro1]

Re: Westinghouse lvm-37w1 turns off more then once

You need to find a service manual and see voltage the 18V should be. Most sets use 24V for the iniverters.

The voltages are printed on the connectors of the delta power supply board. Today the tv turned off yesterday it worked great.

Ok It's reading on the top connector 12.28v 12volts printed on board 5.04vsb 5v printed on board 4th connector is reading 18.52v last connector 264v update these readings are yesterday's printed on board is 120v 3 pins I get 264 tv on properly when it shuts off by itself im reading .90 on the 5v supply pin and 5.04 on the vsb turn off set turn on I get 5.04 on both pvsb and where it's printed 5v on board it turned off a cupple of times tonight.

[m0par]

Re: Westinghouse lvm-37w1 turns off more then once

I don't know if you have already fixed yours, but...

I was able to fix my old Westy by simply resoldering the 2 square caps that are located right next to each other towards the bottom of the power supply board. Sorry, already reassembled it, so I don't have component numbers.

Upon close inspection, you could see where the solder joints failed.

I can't take credit for the troubleshooting. There's an instructable I saw, and it was exactly my problem too.

Maybe I'll get another 8yrs out of it.

[budm]

Re: Westinghouse lvm-37w1 turns off more then once

Yep, that is the common failure in this power supply board:
http://s807.photobucket.com/user/bud...ml?sort=3&o=46

[Shane711]

Re: Westinghouse lvm-37w1 turns off more then once

I got this TV, Westinghouse LVM-37w1 and the power board was failing. The capacitor did have a broken solder joint but I fixed that and it still did not work. I manually started the board by grounding the PS-ON and it jumps up to 12v and drops right back down. Every time I reconnect the PS-ON it does the same thing but the PS board will not stay on. So I decided to remove the 2 capacitors where the solder joint is known to break. .22uf and sure enough, one of them was bad. So I did not have the same type of capacitor so I replaced it with a .22uf polyester capacitor and it worked.

Does anyone think this is good or should I order a new one?

Then I turned it on and there was no sound. I was about to take it apart when I realized there was no internal speakers so I got some speakers and now it works perfect.

[Th3_uN1Qu3]

Re: Westinghouse lvm-37w1 turns off more then once

Polyester capacitors are fine for that application. Good job.

[budm]

Re: Westinghouse lvm-37w1 turns off more then once

Can I see the printing on that bad cap?