Re: Lg 42pc1d
yes at both ends lol
yes at both ends lol
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Re: Lg 42pc1d
K, on the Z-sustain you have five red capacitors. What voltage do you get across any one of these capacitors? (They are all in parallel, you need to test only one.)Attached FilesPlease 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: Lg 42pc1d
160v
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Re: Lg 42pc1d
OK, seems quite high... there is a similar bank of 5 caps on the Y-SUS, it is underneath the large heatsink on it. Test the voltages there.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: Lg 42pc1d
97V next :P
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Re: Lg 42pc1d
There's a fault on one board then. The voltage should be nearly the same between boards. I'm leaning towards the Z-sustain because I have not heard of an ERC voltage that high.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: Lg 42pc1d
what does ERC voltage mean and how could I further diagnose this/ rectify the problem? replace the board? :/
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Re: Lg 42pc1d
ERC = Energy recovery, used to recover energy which would otherwise be lost in the plasma panel, to improve the panel efficiency.
Problem is, it's very hard to diagnose without an oscilloscope. Plasmas always are.
Now, if the Z-sus was bad, I would expect you would still get an image, but it would be dim. Too dim to be usable but still visible. But it is possible you have two faults.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: Lg 42pc1d
well the original fault was the color was distorted until the TV warmed up (couple of minutes) the picture was like a yellow/orange color. if that's any help?Comment
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Re: Lg 42pc1d
That points more to the Y-sustain, so it does help. I just wish I could be more precise.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: Lg 42pc1d
I left the TV on to warm up and you still get a little flicker when you switch the TV on and off by flicker I mean the white bits around the screen when it switches on and off ha but definitely no picture I sat pushing menu and ok etc for minutes lol and nothing was happening at all.Comment
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Re: Lg 42pc1d
Any idea if I can try anything else to further diagnose before I buy bits?
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Re: Lg 42pc1d
Hi Kazzy if you look though to the top of the Av board do you see any red LED's when the set is on you should have 4Comment
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Re: Lg 42pc1d
yea i think there is all 4Comment
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Re: Lg 42pc1d
ok if you lift the Av board up out the way you will see on the control board the ribbon that go's to the ysus check that is home on both ends and the clips are ok.Comment
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Re: Lg 42pc1d
sorry folks I went on holiday and forgot about this thing, well the ribbon looks to be okay and connections secure so and other things to check
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Re: Lg 42pc1d
anyone got any further diagnosis?
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Re: Lg 42pc1d
I'm going to order a replacement Y-SUS board of ebay and see if that works
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Re: Lg 42pc1d
Ok may be a silly question... have you tried shining a flashlight onto the panel when its switched on? maybe see a picture?Comment
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Re: Lg 42pc1d
there is no picture at all but when you switch it on/off you can see a white flicker around the edge of the screenComment
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I have a Samsung UN55TU700DFXZA with a distorted picture and I thought it was a bad panel. I had a similar board with one number off and still tried it to see what the issue could be. The picture came out clear with only missing blue hue I think. I found a replacement board for $30 but wanted to learn if this would be the main IC or possibly something else. I don't have service manual so looking to learn about these cheap sets.... -
hello.
Have this Apple a 1708 - 820-00840 that have distorted picture for few seconds, than come to normal or few seconds and than again distorted picture. flexing hinges have no effect. distortion is like thin horizontal stripes and bad picture... -
Hi,
Can you help me please what can be wrong with this distorted picture?
Thank you.... -
Hi, I have a Samsung UE50TU with:
- sound and backlight, but no picture
- when it arrived, it had a picture for a few seconds
- it keeps rebooting
- without ribbon cable between the two panel boards, it does not reboot but I have no picture
- without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
- when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.
- without cable between mainboard and lcd panel and with a jumpered... -
Hey, please the attached pics. This TV will turn on (Backlights on) but no picture provided. I tried disconnecting the right side LVDS cable between the tcon and buffer board (pic 1) and then the left side LVDS cable between the tcon and buffer board (pic 2). I get an image each time, but as you can see, there's a discoloration issue happening. But with both LVDS cables connected i get a black screen (BL ON though).
Just curious if anybody has seen this before? I will provide pictures of the boards shortly, I'm just in a rush and wanted to get this posted and see what the experts...
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