Philips 58PUS7505/12 Backlight OK / no picture.. Help

[markolino]

overnight my philips is 2 years old but unfortunately it is no longer under warranty.. started joking..
the picture became black.. but the next day when I turned it on, I still saw a little something... But now it's just black..
the backlight works normally.. the sound too.. the motherboard also shows that it is ok..
I suspect a T-Con panel. Do you think the panel is shorted?
below I am sending you a video about my TV and how it behaves.
I also tried disconnecting the ribbon cables. first the left one, then the right one.. but I can't find out if the panel has burned out or if only the Tcon is in some kind of contact...
i measured the VCOM point on the T-Com card.. the voltage could be 8v. but it shows 23V to me. which I think is too much.. 23 V is for VGH...
when I disconnect the left or right ribbon cable, then I have the correct measurement at the VCOM Point and it is 8V or 7.23V.

watch the video.
thank you

https://youtu.be/gxBj-mLZqjo?feature=shared

[EazyBone]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

Looks like you have picture.. but you have lines. Could be tcon, but could be panel. Someone more technical will chime in I'm sure.

[William1967]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

A faulty panel, masking off some data lines probably helps. Start with the rightmost 3 lines of the right FCC cable. If that does not work try some more lines.

[markolino]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

William:
i tried covered lines.. exactly as you wrote. first 3 lines.. it was not ok..
tried covering only 1 line on the far right on the right flat cable. blo is better, but still annoying. the upper part of the screen still has lines.
is there anything else to do??

[EazyBone]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

William:
i tried covered lines.. exactly as you wrote. first 3 lines.. it was not ok..
tried covering only 1 line on the far right on the right flat cable. blo is better, but still annoying. the upper part of the screen still has lines.
is there anything else to do??

Try up to 12 lines at once. Always try more lines, and once you get it, try less lines. I had a screen with this exact problem, was a JVC though. I wanted to try a tcon replacement, could not find a match so never fixed it but using tape never actually solved the lines for me either. I never found a replacement. I'm curious to see what fixes here

[markolino]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

This cover 12 lines... in right side. Picture...
And after 20 second display flickering..

[ducky29]

Re: Philips 58PUS7505/12 Backlight OK / no picture.. Help

Had the same set about 3 weeks ago. The set was just above 2 years, same as yours.

Intermittent picture, sometimes it was ok, sometimes no vgl no vgh. Wrote it off as no fix, panel problem. There should be a manufacturing fault by the panel maker. Also seeing lots of 58 vestels with screen problems. I think it's the same manufacturer but can't recall correctly.