BUSH LED32134HDCNTD no picture

[finntricky]

As the title says, no pic,
tv turns on, back light/led's come on and stay on, tv responds to remote, but nothing on screen, led's are flickering,
first thought is main board, tryed removing LVDS cable at both ends, cleaning and reseating, no change, but if i remove one end from main board or control board, the led's no longer flicker, so now thinking control board, but its one of those that is part of the screen, anyway, checked fuse, all good, made sure cables are connected, and removed the cover plate. turned the tv on to take some volt readings, but within a min, i found 3 SMD caps that was so hot to touch, they would burn your skin,
so my question is, i cant find any markings on the caps to replace them, so now what, and also would this be the cause of no pic, or is that down to the main board.

[budm]

Re: BUSH LED32134HDCNTD no picture

Which caps in the pictures? Are they connected in parallel? They show low resistance on all three when tested off the board?

[finntricky]

Re: BUSH LED32134HDCNTD no picture

last pic, its the top 3 together, i have had a play with it and found the 3rd one of the 3 is short, and removed to make sure, im now going to take a good one of, and see what the reading is, and dig out some old t-cons and see if i can find one to match,
i did try the tv while the bad cap was removed and there is no more screen flicker, but still no picture.

[finntricky]

Re: BUSH LED32134HDCNTD no picture

UPDATE, tv now repaired, just replacing the one shorted cap, has now sorted both problems, no picture and flashing led's, job done.
readings i was getting from good caps was 9.23nf just in case anybody else has the same problem, and they read the same in or out of circuit.

[ReeceyBurger123]

Re: BUSH LED32134HDCNTD no picture

Welldone

[Hamie]

Re: BUSH LED32134HDCNTD no picture

Finn you wouldn't happen to be able to upload the eeprom dump from this?

[ReeceyBurger123]

Re: BUSH LED32134HDCNTD no picture

Same panel here today but from a Vestel however the same ceramic cap is shorted but the main SAM Ic is failed too its not giving any output and is running burning hot. Might change it or just trash the panel dunno if Ive got time for it.

[finntricky]

Re: BUSH LED32134HDCNTD no picture

Same panel here today but from a Vestel however the same ceramic cap is shorted but the main SAM Ic is failed too its not giving any output and is running burning hot. Might change it or just trash the panel dunno if Ive got time for it.

when i get like that, i put it back together, and come back to it when im not doing anything else, sometime stand for months, LOL

[finntricky]

Re: BUSH LED32134HDCNTD no picture

Finn you wouldn't happen to be able to upload the eeprom dump from this?

sorry mate, only just seen this, cause the post is back on the first page, LOL, but i have'nt got the dump anyway,

[MrSnow]

Re: BUSH LED32134HDCNTD no picture

9.23nf???? Sure?

[finntricky]

Re: BUSH LED32134HDCNTD no picture

9.23nf???? Sure?

that was the reading i was getting on my meter

[MrSnow]

Re: BUSH LED32134HDCNTD no picture

If it was short, how could you measure the cap?
Ha(d)ve the same problem. The 3rd was short. Used a 10nf 50V cap.
Backlight goes on and then the TV shows strips (brighter and brighter).
Before i changed the short cap, only the backlight works (without strips).
Anyone an idea?

[chrisB47]

As the title says, no pic,
tv turns on, back light/led's come on and stay on, tv responds to remote, but nothing on screen, led's are flickering,
first thought is main board, tryed removing LVDS cable at both ends, cleaning and reseating, no change, but if i remove one end from main board or control board, the led's no longer flicker, so now thinking control board, but its one of those that is part of the screen, anyway, checked fuse, all good, made sure cables are connected, and removed the cover plate. turned the tv on to take some volt readings, but within a min, i found 3 SMD caps that was so hot to touch, they would burn your skin,
so my question is, i cant find any markings on the caps to replace them, so now what, and also would this be the cause of no pic, or is that down to the main board.

Hi, I had the same problem with exactly the same cap. I measured the others at 10uf, so I replaced the faulty one with a 10uf sm cap and it works fine.

[chrisB47]

If it was short, how could you measure the cap?
Ha(d)ve the same problem. The 3rd was short. Used a 10nf 50V cap.
Backlight goes on and then the TV shows strips (brighter and brighter).
Before i changed the short cap, only the backlight works (without strips).
Anyone an idea?

Try a 10uf cap instead. That is what I measured the other two caps at and I replaced my faulty cap with a 10uf 50v cap and it works fine.

[chrisB47]

9.23nf???? Sure?

10uf

[ruhemici]

Re: BUSH LED32134HDCNTD no picture

If it was short, how could you measure the cap?
Ha(d)ve the same problem. The 3rd was short. Used a 10nf 50V cap.
Backlight goes on and then the TV shows strips (brighter and brighter).
Before i changed the short cap, only the backlight works (without strips).
Anyone an idea?

I have a panel with the same problem. I found the shorted capacitor and replaced, but the screen started showing white lines changing brightness continously.
Any thoughts on how to solve this? Is the panel dead?

[StephenU]

Re: BUSH LED32134HDCNTD no picture

I have a panel with the same problem. I found the shorted capacitor and replaced, but the screen started showing white lines changing brightness continously.
Any thoughts on how to solve this? Is the panel dead?

I also just completed this same repair, make sure you use the same value Cap. I used one from a damaged panel and TV now works fine.

Good Luck.

S.