Re: lg p's 800 fuzzy picture plasma
You just checked them.
Could be a dried out startup cap, etc.
You just checked them.
Could be a dried out startup cap, etc.
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Re: lg p's 800 fuzzy picture plasma
Where are the starter caps on this board are they the bigger onesComment
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Re: lg p's 800 fuzzy picture plasma
No - the smaller ones - startUP capacitors, they connect to the VCC pin of the controller chips (like that stand up one on the Samsung plasma you're doing.)Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: lg p's 800 fuzzy picture plasma
Top middle or bottom
Attached FilesComment
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Re: lg p's 800 fuzzy picture plasma
Haven't a clue - you'd have to locate the controller chip - it's usually near the transformer(s). You can locate a controller IC by googling it's part#. I'd start with that 8 pin smd top left of the transformer.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: lg p's 800 fuzzy picture plasma
I have found ic 402 and the two next to each other are ic602 and ic601Attached FilesComment
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Re: lg p's 800 fuzzy picture plasma
Should I be getting 17v on one of the legs of ic 402Comment
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Re: lg p's 800 fuzzy picture plasma
Just ordered a new y sustain so fingers crossedComment
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Re: lg p's 800 fuzzy picture plasma
Just got a new y sus and it's exactly the same any ideasAttached FilesComment
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Re: lg p's 800 fuzzy picture plasma
Check -Vy/Vsc. Still bad?
Maybe try without one or other buffer.Last edited by tom66; 03-06-2014, 11:45 AM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: lg p's 800 fuzzy picture plasma
Yer still going up and down with either buffer in or outComment
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Re: lg p's 800 fuzzy picture plasma
You probably got a bad board then. Was it from a reputable source...?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 p's 800 fuzzy picture plasma
Off eBay he said it works and it's tested has good feed backComment
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Re: lg p's 800 fuzzy picture plasma
I can't see anything but a bad Y-sustain causing your problem, unless the buffers are damaging it. Due to the picture being OK aside from fuzzyness this seems unlikely. Not sure what to suggest.
99% of sellers don't test the boards because they can't. You'd have to have a spare panel to fit all the boards to and check them. The few exceptions are US sellers such as shopjimmy who do check each board, apparently.Last edited by tom66; 03-06-2014, 01:08 PM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: lg p's 800 fuzzy picture plasma
Yer its just a bad pic with a pink mark if I turn vs up it goes to a nice pic but goes off after a few secondsComment
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Re: lg p's 800 fuzzy picture plasma
That will occur if you increase Vs too high, power supply can only provide so much current.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: lg p's 800 fuzzy picture plasma
The pic is good if I turn it up from 194 too 205 but can it stay there or will it damage itComment
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Re: lg p's 800 fuzzy picture plasma
Do -Vy and Vsc stabilise when you do this? What is the rating on the panel for Vs and Va?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Picked up a bahemoth plasma TV not too long ago and just now getting around to looking at it.
No picture but you hear the TV static (white noise) playing loud and clear.
The back was already taken off (and no screws were provided) as the previous owner had already taken a look.
But it seems they didn't get too far and just left it.
When I first took a look I was amazed at how pristine the inside looked.
Its as if the TV had been in a time capsule.
Caps looked like they were just pulled off the self.
Copper coils had no sign of corrosion on... -
Saved this beast from the landfill this weekend.
Manfactured July 2013 in Mexico.
I love working on plasma TVs.
Its been a while but I was lucky enough to find 2 this week.
The TV powers on and stays on but no picture. Havent checked for sound yet.
No bulging caps although the insides are pretty dusty and the boards are discolored from many years of high heat.
Will start troubleshooting tonight.
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Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.
The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.
Original T-con:
Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.
First replacement T-con:
I thought it might be t-con and ordered new t-con from china(supposedly tested)... -
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode... -
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...
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