Philips 42TA2800 negative image

[funtastic]

Hi there,

I've been given a tv to see if I can fix it and it has a negative image.

I took the back off and found that one of the ribbon cables coming out of the T-con is blackened where it plugs into the T-con and 1 or 2 of the contacts have been destroyed. The people said it had water damage from re wallpapering their house.

I'm just wanting to know if this is what's causing the issue as it's only affecting one ribbon cable, so wouldn't that mean it should be only affecting one side of the screen??

[Clydeuk]

Re: Philips 42TA2800 negative image

Maybe try isolating that side and firing up, you may have to clean any crud out of the connector. The T-Con may have been damaged possibly. You don't always get half a screen, it depends on how the panel is driven, one of the connectors may carry the drive signals for the x axis tabs as well as it's side of the vertical. There's some DC-DC converter circuitry on the t-con as well like a buck converter to handle the high currents of all those TFT transistors. There will be a NVM i.c as well.

Might be worth trying another cable after cleaning up the connector, you never know.

[funtastic]

Re: Philips 42TA2800 negative image

Hi,

Where can I get new ribbon cables? What do I search for?

[cashkennedy]

Re: Philips 42TA2800 negative image

If you know the pin count you can search on ebay, can also search by common brands that make these cables

http://www.ebay.com/sch/i.html?_trks...at=0&_from=R40 has a few options / but as I said you need to know pin count of the cable to match it / and you want may to get something of roughly the same length.

You also have to match the pixel pitch
http://s1133.photobucket.com/user/03...R8955.jpg.html