Have a Phillips LCD 47PFL7403D chassis style LC8.1ULA that is having an intermittent problem with losing picture but still has sound. Was doing it a few months ago and stopped but has since started up again. I have read some of the posts on this forum about similar problems but don't see any where the issue is completely random. Seems like it would be a short somewhere but I'm a complete newb so not sure where to start. Any info would be most appreciated.
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Re: Phillips LCD intermittent problem no picture
While 'losing picture' is graphic, it doesn't really give much information.
Does the screen go black, or dies the picture break up, go gray, or otherwise demonstrate that the backlights are working?
If the screen goes black, can you see an image on the screen if you shine a bright light on it (it can be tricky to see this)?
What (if anything) will cause the picture to come back?
Note links in my signature on taking and attaching pictures.
Service manual.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. -
Re: Phillips LCD intermittent problem no picture
The screen goes black, backlights are not working. Problem is corrected by turning it off and back on but that doesn't work every time. Sometimes when turning it back on some white light will show briefly but in splotches across the screen and then it will go black again. Other times turning it back on there are no problems. Usually doesn't start til it's been on for about 30 minutes but sometimes only 15. Doesn't happen every time but when it does, it does it a lot.Comment
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Re: Phillips LCD intermittent problem no picture
That definitely sounds like inverter problems, possibly a bad transformer.
The first step would be to take the back off and take a picture of the back of the TV. A single shot showing everything is sufficient at this time. From that I will point out specifics.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Phillips 58PUS7805/12, was told it had sound no picture, sometimes picture would come back then go again?
From what I have seen myself, its just blank illuminated screen. Tried unplugging each ribbon cable from Tcon in turn.
When one is unplugged, I get half sceen, clear picture.
With other unplugged, get half screen but with thin horizontal lines
Any ideas? Or is it likely a bad panel?... -
Hi all,
hopefully someone on this board has an idea on how to begin with troubleshooting this problem.
The monitor AOC AGON AG273QCG (curved 27" QHD monitor) has problems refreshing every 1 to 2 seconds or so. A line appears in the middle of the screen and the lower half of the screen is shifted to the right.
See attached picture.
I am leaning towards an issue with bad soldering of the graphics chip, because the problem used to go away after some time (minutes) but now it is here to stay.
However, this could also be related...08-12-2023, 02:36 AM -
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)... -
Hello gurus, hope you can assist me...
I have a Sony KDL.40P3600, with an issue on the left side of the screen (pictures attached).
I think the problem is the panel, but before send it to trash, i would like to get a second opinion.
Thanks in advance. -
Hello all
I pick this up free as a repair project for the holidays.
The original symptom was power cycling after 3-4 seconds with a single red light flash.
To remedy this I went through and unplugged each component 1x1 and discovered that when the FFC cables were disconnected the backlights stayed on and the TV did not reboot.
I tried remove one or the other to see which side of the display was causing the issue (expecting to see half a picture to show) but didn't see anything. But the boot loop only appears when the top FFC cable (right side...
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