Re: 42PC1DA Plasma partial picture?
I have the board out now and I am trying to track down the short. I am not having much luck. Any ideas? I am not really sure what to test to be honest.
FlatOverCrest
Member
Last Activity: 02-27-2014, 05:00 PM
Joined: 02-20-2014
Location: Traverse City, MI
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Re: 42PC1DA Plasma partial picture?
Is it fairly hard to find a schematic on this board? I am honestly a little unsure on what to check without following traces.
Would purchasing the whole board be a bad idea? I was really looking forward to doing some soldering work but this seems like good value [url]http://www.coppelltvrepair.com/p/472/6871qzh056b-lg-zsus-sustain-exchange-service[/url]Re: 42PC1DA Plasma partial picture?<...lowing traces.Leave a comment:
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Re: 42PC1DA Plasma partial picture?
Fault finding might be okay if I know what to check. Lets say so so... replacing parts I actually feel fairly comfortable with.Leave a comment:
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Re: 42PC1DA Plasma partial picture?
This is what Zsus is looking like now (shorting out)
...Leave a comment:
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Re: 42PC1DA Plasma partial picture?
No need to apologize!
Might be getting somewhere.
Ysus looks good. measurement below:
However. I had measured the Vzbias this am per the manual I had and it was in spec. 100v. now it is only reading .002v see image below for measurements at the Zbias collector to ground and at the fuses.
Vzbias went from 100v this am to .002v now measured from collector to ground (forgot to add that to the image)
These measurements have changed since I started!...Leave a comment:
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Re: 42PC1DA Plasma partial picture?
Okay. Here is an image of my Zsus board. I believe I measured the proper red film caps. they were quite low if they were the correct caps.... The readings are in the picture. Are these the proper caps?...Leave a comment:
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Re: 42PC1DA Plasma partial picture?
Thanks for the direction! I will check them out and report back!Leave a comment:
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Re: 42PC1DA Plasma partial picture?
A little update: Adjusting -VY had the most profound effect. If I cranked -VY slightly over the -200v mark I could get a full picture it was just fuzzy and lacking any contrast.
These symptoms have to mean something to someone. I am going to keep my head down but as of now I am not sure what to test.
Any help would still be greatly appreciated.Leave a comment:
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42PC1DA Plasma partial picture?
Hello, I am very new to the world of Plasma TV repair but have some experience and tools available. I was given a LG 42PC1DA Plasma that was having some issues.
I have checked for bad caps through visual inspection as well as physically feeling them. I see nothing unusual.
All tube fuses are in working order
I have checked voltages going into the boards and they seem to be perfect.
I do not have an oscilloscope handy but do have other tools (DVOM)
I first wanted to post up some pictures to see if anyone has seen this... -
Re: New Members - please post your introductions here
Hello, FlatOverCrest here. I recently acquired a new challenge. I love electronics (usually simple stuff) and thought I would try something new... like plasma tv repair.
Thanks!Leave a comment:
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