Re: Samsung plasma PN50C550, fried Y-sus/buffer
Attached are pictures of Y-main, Y-main barcode, and X-main..
I checked X-main for shorts, and Vdd is shorted to ground.. if X and Y are both fried, how can I be sure the panel itself hasn't been damaged ?...
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Re: Samsung plasma PN50C550, fried Y-sus/buffer
Thanks for all the feedback, I will not be dealing with that company further, I'll file a paypal dispute.
I did not try adjusting anything with the power on - the y-buffer connections are plugin not ribbon cables, so very hard to screw that up.
I am DIY and new to TV repair, but I have well over a decade of experience in PC repair (just not at the component level, it was never cost efficient, cheaper just to replace a board). I studied general electronics repair for a semester, but never completed the...
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Re: Samsung plasma PN50C550, fried Y-sus/buffer
Got a response:
-------------------
All our TV parts are pulled from working units with crack screen in our TV
service shop. All parts are tested and guaranteed to be in 100% working
condition!
Sorry to hear about your TV problem:
I would like to ask you some question before I can issue RMA:
1- Do you read and accept our "Return& Warranty" before buy our items?
[url]http://www.electronicstvpartshop.com/index.php?option=com_content&view=article&id=72&Itemid=119[/url]...
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Re: Samsung plasma PN50C550, fried Y-sus/buffer
Thanks guys.. the supposedly "new" y buffer was from [url]http://www.electronicstvpartshop.com[/url]
$80 USD + $20 USD shipping + 13% tax = $113 USD, or $125 Canadian
Most parts range between $75 - $100 + shipping/taxes
Looking closely at the new buffer, it has a the same part and revisions, but it has the number "2" in a circle on the left, while the original has a number "1". Also the ICs are slightly different (the second set of numbers on the chips are different)...
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Re: Samsung plasma PN50C550, fried Y-sus/buffer
Update: I traced the y-sustain short to 2x 30F123 mosfets, under the heatsink near where the y-buffer connects.
I'm looking for replacements, but it appears china is the only source - I was hoping for a Canadian dealer so I could get the parts within days..
If I can get the y-sustain fixed, I have the old semi-working y-buffer to put back in (until I can afford to replace with new ones)....
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Samsung plasma PN50C550, fried Y-sus/buffer
Hi all,
I was experiencing a thin black line (horizontal, full width of the screen) and red sparkles on the screen (more noticeable on a white background or test pattern than normal tv).
I ordered a new Y-buffer figuring since it was just this minor issue, I wouldn't need to replace Y-sustain (or Y-Main as Samsung calls it).
I installed the new buffer board, the screen flickered red a few times, then "pop" and now both the y-buffer and y-sus have dead shorts to ground!
What could have caused this reaction ? I was very careful...
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