Panasonic TX-L32X5E picture "ghost/distortion" problem

[Nightwalker]

Hello Everyone

As titled, picture stays distorted on screen, lines fill entire area when an image present and stays there for a while.

As you can see, where "no signal" message appears picture is "ghosting"..
Same when "source selection" tab is shown on screen.


Any ideas??

[Andrew F. Ali]

Re: Panasonic TX-L32X5E picture "ghost/distortion" problem

Are you getting audio?....I would suspect the LVDS Cable needs cleaning and re-seating or the T-Con Board failure.

[Nightwalker]

Re: Panasonic TX-L32X5E picture "ghost/distortion" problem

Hello Andrew F. Ali

Audio working, i have already check LVDS cable, TCON at the bottom side of metal frame after visual inspection seems ok.

Also i forgot to upload schematic..i suspect IC4120, page 36 at the middle.

[Andrew F. Ali]

Re: Panasonic TX-L32X5E picture "ghost/distortion" problem

You would need to verify the T-Con is getting power. Look for a fuse on the T-Con Bd. Note: Screw the T-Con Bd down before applying power.

[Nightwalker]

Re: Panasonic TX-L32X5E picture "ghost/distortion" problem

TCON at the bottom side of metal frame after visual inspection seems ok.

Sorry, my mistake here for not explain it right, T-Con isn't exist as separate board...is built in on MAIN Board.
At the bottom side of metal frame is the LVDS cable connection to the Panel..
IC4150 and IC4120(T-Con DAC and T-Con DCDC IC's) are on the MAIN BOARD

Also found IC4120 datasheet:

http://www.ti.com/lit/ds/symlink/buf12840.pdf