A while back I posted a thread about the PSU not working. Well I have a new one of those now, and now I have additional symptoms. There is a transparent grayish bar that goes across the top of the TV, it's about 2" wide. The TV will turn on and stay on now, but first it has to turn off and on a few times. During that time, the screen will be a reddish black for a moment, then go to a very faint blueish black when it displays the "Please wait" message. I unpluged the YSUS and ZSUS boards and the TV wants to turn on-off-on-off-on-off again, so any ideas?
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Re: 50HP66 Again!
Pictures would be helpful but it sounds like its probably a buffer or ysusLiberating magic smoke one part at a time -
Re: 50HP66 Again!
What does the buffer look like?Comment
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Re: 50HP66 Again!
Runs along the left edge of the plasma panel, looking from the rear.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: 50HP66 Again!
Is there a way to test to see if either of those is bad? I mean besides getting new ones. lolComment
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Re: 50HP66 Again!
Well here are some photos of what's going on with the TV. Let me know if you need anything else.Attached FilesComment
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Re: 50HP66 Again!
That looks like a bad upper Y-buffer to me, also.Comment
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Re: 50HP66 Again!
Do you think that I should replace both the lower and the upper? Or just the upper?Comment
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Re: 50HP66 Again!
You can usually get away with just replacing a single problematic buffer in these older LG-based TVs.Comment
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Re: 50HP66 Again!
Is the board called XR XL or XC?Comment
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Re: 50HP66 Again!
The XR, XL, and XC are the ones on the bottom. You need the upper one on the side. I believe I may have one of these that I know for a fact is in working order if you want to post a picture of yours.Last edited by aaronwt6; 09-23-2013, 08:35 AM.Comment
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Re: 50HP66 Again!
Before you replace it you might try reseating the upper ribbon. The board you are looking for is at the top left corner of the tv if you are looking at it from the rear. Just a word of warning the ribbons are a pain to get in perfectly.Liberating magic smoke one part at a timeComment
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Re: 50HP66 Again!
I took it off and reseated the ribbons, but it's still the same. While I was doing that I took photos of the darn thing. Here they are. I believe the part number is 6870QDC004A.Attached FilesComment
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Re: 50HP66 Again!
They arn't actually blue, that's jut the mood of our camera that day.
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Re: 50HP66 Again!
I will check out the board I have tonight for you but I'm almost positive that's the one. I'll answer you here or shoot you a PM. Could probably send it to you tomorrow so you'd have it by Saturday.Comment
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Re: 50HP66 Again!
Alright I'll be waiting for your reply.Comment
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Re: 50HP66 Again!
I do indeed have this board. I'll shoot you a PM.Comment
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Re: 50HP66 Again!
Picture of the numbersAttached FilesLast edited by aaronwt6; 09-25-2013, 07:15 PM.Comment
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Re: 50HP66 Again!
Hey sorry I've been away on business. The TV is doing something else new. (I haven't replaced the Y board yet either.) I included some pictures. Do you still think it's the Y Board or something else?Attached FilesComment
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Re: 50HP66 Again!
well I can tell you your sustain boards are working. that seriously looks like a main board to me or scalar board possiblyDid I leave the soldering iron on?Comment
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There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
Hi,
Recently I had to replace main board of my Samsung 3d smart TV due to issue.
After replacing it works fine for several days.
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What could be the problem?
P.S:
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Thank you in advance
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