Re: Another Westinghouse LCM-22w2 (Shuts off)
Hey everyone, just wanted to give an update. Replaced the transistors, but the power board was still shot. I ended up just buying another power board instead from someone selling an LCM-22w2 on Ebay ($30) and that fixed the problem -- but only for about 20 minutes!
"Uhh... what?"
When I first turned the screen on, the top CCFL was very pink, and then gradually cleared up after about a minute or two. After it cleared up I thought all was well, until the monitor suddenly shut off 20 minutes later; no...
sircanegiem
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Last Activity: 11-28-2010, 03:26 PM
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Re: Another Westinghouse LCM-22w2 (Shuts off)
In my own monitor I replaced the caps with Nichicon PW and HE, and I think a Chemi-Con KZE or two. And from my research there were some varieties of this board used in Viewsonic and Acer monitors too.Leave a comment:
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Re: Another Westinghouse LCM-22w2 (Shuts off)
Wow good call, didn't even think about the vents. That is the actual picture of the power supply and those are definitely fake pannys with X vents. I'll go ahead and take apart my own LCM-22w2 and recap it (again) with the exact same ones I put in mine and try my luck again after the new transistors arrive. Should be here on Saturday or so; will post then.Leave a comment:
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Re: Another Westinghouse LCM-22w2 (Shuts off)
Sorry, should have cleared that up. Two of them are panasonic, one nichicon, one samyoung NXC, and the rest huang (never heard of 'em, but physically they look OK). The biggest cap is the original Capxon capacitor. I emailed the seller now and he replied saying the caps were replaced just six months ago or so....Last edited by sircanegiem; 10-13-2010, 06:03 PM.Leave a comment:
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Re: Another Westinghouse LCM-22w2 (Shuts off)
Whoops, misspelled the code on it, it is indeed the STP10NK60ZFP you linked!
(shorting it wouldn't have damaged anything else would it? :S)...
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Re: Another Westinghouse LCM-22w2 (Shuts off)
Okay, so I jumped ahead and found three of the four exact transistors on Digikey, but the fourth one isn't there.
The datasheet for it is [URL="http://www.wontop.com/pdf/SB20150FCT.pdf"]here[/URL].
Can PlainBill or anyone with some knowledge of this please link me to a compatible part? (digikey preferably)
I also replaced the cap the last person missed; had a few left over from repairing my own LCM-22w2.Re: Another Westinghouse LCM-22w2 (Shuts off)
Okay, so I jumped ahead and foundLast edited by sircanegiem; 10-13-2010, 05:27 PM.Leave a comment:
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Re: Another Westinghouse LCM-22w2 (Shuts off)
Looking around the transformer I don't see any fractures in the solder; some of the joints look more dull than others but looks normal besides that.
I was testing the transistors and shorted one out though (it sparked - whoops!) on the left side of the green circle. On the lower two legs, the voltage was flying all over the place (-150v to 400v on my digital multi) and I can't remember the other two because one of the leads slipped and now it doesn't read anything... looks like I'll need to find a replacement :P
...Last edited by sircanegiem; 10-13-2010, 05:04 PM.Leave a comment:
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Re: Another Westinghouse LCM-22w2 (Shuts off)
I plugged it in again and took another listen, and it sounds like the ticking sound might actually be coming from the area just to the right, possibly from a transistor, but it's really difficult to tell.
If I were to try and replace the four transistors on this board, how would I find out which ones to replace them with?Last edited by sircanegiem; 10-13-2010, 04:25 PM.Leave a comment:
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Another Westinghouse LCM-22w2 (Shuts off)
Model: Westinghouse LCM-22w2
Power board: Delta DAC-19M009
Hello everyone, I just bought one of these on ebay that shuts off after about 5-10 seconds of being powered on, and stays turned off until I unplug it from the wall for a few mins and plug it back in again, then the problem repeats. [B]I have checked the board's capacitors[/B] and it appears they have already been replaced with Panasonic caps.
I haven't done anything to an LCD power board before besides replacing the caps (never tested components) so does anyone have some ideas of what to test for problems?...
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