Toshiba 48L5463DN no picture, backlight on

[budm]

Re: Toshiba 48L5463DN no picture, backlight on

The AVDD is the boosted Voltage for running the COF's (Chip On Film) which are embedded on those flexible ribbon cable between LCD glass panel and the tab bonding board.

[Stigsolbjerg]

Re: Toshiba 48L5463DN no picture, backlight on

Well now i almost have fixed the unrepareble panel board.
I took these to caps of the board, and one one of them was bad, so i replaced it with one from a hairdryer (about same fysical size), and got this picture on the screen. Now i just need to get rid off those lines, but how?

[nomoresonys]

Re: Toshiba 48L5463DN no picture, backlight on

Are you sure that no more caps are bad on that driver board??

[budm]

Re: Toshiba 48L5463DN no picture, backlight on

Well now i almost have fixed the unrepareble panel board.
I took these to caps of the board, and one one of them was bad, so i replaced it with one from a hairdryer (about same fysical size), and got this picture on the screen. Now i just need to get rid off those lines, but how?

It is unrepairable if the COF shorted out, but as you can see, you need to check all the caps for bad resistance reading.

[Stigsolbjerg]

Re: Toshiba 48L5463DN no picture, backlight on

Hi i can now call it a succes, the tv has been running for two nights now. The lines went away when i reseated all the cables on the boards. So i want to thank you all very much for your help on this projekt. So yokoono and budm if you ever come to Denmark, beers are on mee.

[frica]

Re: Toshiba 48L5463DN no picture, backlight on

+1

[nomoresonys]

Re: Toshiba 48L5463DN no picture, backlight on

Nice fix, thanks for the feedback.