I thought it would be a fun hobby to pick up TVs with broken panels and sell the boards on eBay. I was wrong! I keep getting people wanting to return for various reasons. A few days ago it was a ysus board that "only worked for a second, but another board I have works all day" which I suspect blew from an error on the buyers. Today its a main board that is giving weird display issues. I can maybe understand a ysus or xsus board going out from a break in the panel shorting something out. But a main board breaking from a broken panel? And the TV didn't appear to have fallen, so there wasn't any great impact to the boards... These TVs are long gone now, so I have no way of testing the returned parts.
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Re: How likely is a cracked panel to short out boards?
You just have to accept the returns and deal with it; if you don't want bulls**t excuses, you can always say "14 day return policy buyer pays shipping" so they don't claim they're faulty.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. -
Re: How likely is a cracked panel to short out boards?
Does this look like a bad main board in a LCD set? He said he tried it with two different tcon boards.Attached FilesComment
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Re: How likely is a cracked panel to short out boards?
I would call main on that, the video processing is getting a little screwy.
Especially if 2 TCONs didn't work.Comment
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Re: How likely is a cracked panel to short out boards?
You have to be SURE the part you are selling matches their part exactly revision and everything. A board may fit 2 or 3 diffrent size tv's but will only work right on the size it was made for, suffix or rev number.
This may not be true in all cases, But ya got to cover your butt.Comment
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Re: How likely is a cracked panel to short out boards?
Many people fancy themselves as TV repair people because they saw a video on youtube, got lucky with a few bad caps, or came here and got help from the regulars who handheld them through the entire troubleshooting process.
In reality, most are shotgunners ("I changed this board and still have the same problem") with no clue on how to diagnose and narrow down the problem. Even then, they don't take the extra steps to check for shorts, unstable voltages, blown fuses, etc.
If you don't want returns, sell your boards for below market value and state that there are no returns for any reason.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: How likely is a cracked panel to short out boards?
The internet will be the death of problem solving...Internet has ALL the answers...Comment
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Re: How likely is a cracked panel to short out boards?
I have to admit this is how I started and I guess I'm a shotgunner, but I'm trying to take the next step and educate myself. I apologize if it gets irritating but I can't afford school. The help you give to us guys is great and I can't say how greatfull I have been. I made my car payment from selling a tv you helped fix so thanks for helping out everyone.
I actually just finished a post where I replaced the sc board and still have the same prob:-)Last edited by ryan74; 11-17-2012, 01:14 AM.Comment
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Re: How likely is a cracked panel to short out boards?
That is not main board, but instead a Panel Config problem, you have taken the board from a TV with one panel and it has been put with the wrong panel. It may be possible to configure the main board to use a different panel from the service menu.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: How likely is a cracked panel to short out boards?
Yes. But the owner may be able to fix it by accessing the service menu and changing the panel configuration.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: How likely is a cracked panel to short out boards?
I think it's already in the mail on the way backComment
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Re: How likely is a cracked panel to short out boards?
Next time note down the panel model # on the back of the chassis and note this with the ebay auction. (Only for main/digital video boards; doesn't apply for most other boards.)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: How likely is a cracked panel to short out boards?
Buyer admits his tv was 32" while the board came from a 46". Does this apply to all brands of LCDs? What about plasmas?Comment
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Re: How likely is a cracked panel to short out boards?
Yes, His board might have the same "board" numbers but there are some boards that have a bar code sticker where the actual part number is.
Same thing as above. The X & Y sustains, buffers ect. need to have what panel was in the broken television.What about plasmas?
Use shop jimmys site to see if the board you are selling is compatible with other tvs. Alot of auctions i see the sellers just cut and paste the info directly.
Also, after you get the board back and refund the money you can cancel the transaction so you'll get the final value fees credited back to your account.Comment
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Re: How likely is a cracked panel to short out boards?
Cool, thanks guys. I will use shop jimmy for a reference from now on.
Back to the original question. Is it possible a damaged plasma panel could screw up a X or Y sus board? Or maybe a buffer board?Comment
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Re: How likely is a cracked panel to short out boards?
In the case of one Panasonic I had, the electrodes had shorted and were killing my buffers. But if you look closely at the panel you'll see a burn mark. But otherwise, I have only seen that once and have never seen cracked panels cause any problems.Comment
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Re: How likely is a cracked panel to short out boards?
I was going to buy buffer boards till I saw this. I have panasonic tc-p42u1 plasma with bad buffers and I have been worried about frying the replacments if the screen is bad. No cracks but I didn't think to look close for burn marks. I will have to look before I order. Thanks for the tipComment
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Re: How likely is a cracked panel to short out boards?
this is what i found. thanks for the tip.Attached FilesLast edited by ryan74; 11-19-2012, 08:32 PM.Comment
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Re: How likely is a cracked panel to short out boards?
Looks like dirt to me...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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TV flashes backlight then reboots over and over. no image. Client said it used to have image for a bit before rebooting. Got worse over time.
tcon is built into mainboard.
Only one cable goes to panel boards.
there is a cable from one panel board to the other that links them.
cost cutting measure that results in us having harder time to diagnose.
removing the link to the second panel board allows TV to stay on with stable backlight but no image.
used cut off tape method to mask 1 maybe 2 pins on the side of the cable that goes to that second panel board.... -
Hello Wise Ones,
I am working on an iPhone 12 that fell into a lake and has a short to the main power rail. I do a general look over the board and see no obvious physical issues such as burned-out caps or a split between the boards and the interposer. I separated the top board and the short seemed to disappear. I then checked every test point that I could and they are all not showing a short at all, even the spot where I initially tested. I assumed that something was causing a bridge in the interposer so I removed all the old solder, reapplied some new solder, and sandwiched the boards...05-22-2024, 09:44 AM -
I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!
We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre... -
Hi everyone!
I have a Sony KD-65A1 TV with a fault – 4 red LED blinks. After disassembly and visual inspection, I found that the G76 power board and DKA board had been replaced. It is also possible that TCON was replaced, but I am not sure – there are a few marker marks that could be factory-made.
Based on assumptions, the previous service attempted to solve the issue by replacing potentially faulty components. I decided to investigate further, found a service manual, and figured out a way to power up the power supply unit autonomously and put the OLED panel and... -
Hi Folks
I'm looking for a extreme high current short killer solution for a reasonable cost.
I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
After taking off the socket, the shorts dissappear again.
The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...10-15-2024, 10:13 AM
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