Sony KDL55ex640

[smuddge]

Turns on no problem.

Problem is green vertical lines through all video sources.

Tcon or Mainboard?

Just want to replace the bad board but not sure which is the problem.

after a lot of google searches I see some say mainboard and others say tcon.

I am thinking tcon but just wanted experts advice on this.

thanks

[smuddge]

Re: Sony KDL55ex640

[smuddge]

Re: Sony KDL55ex640

anyone? or is this tab bonding problem?

[nomoresonys]

Re: Sony KDL55ex640

go for a tcon if you can get one cheap enough, if its not that, at least you have a spare and you can rule it out.

[nomoresonys]

Re: Sony KDL55ex640

did you try reseating and or cleaning the tcon cable and ribbons?

[smuddge]

Re: Sony KDL55ex640

yes i did do that. cleaned and reseated all cables.
i am just concerned its a tab bonding issue and i don't have a lot of money to spend right now. although in my experience if it is a tab bonding problem it is usually not the hole screen. I am just trying to make some extra cash to pay some bills so i just want to fix it quick and sell it.

[nomoresonys]

Re: Sony KDL55ex640

if its a tab bond/panel fault, you wouldn't want to sell it, but you could prob. get some use out of it, I wouldn't sell a tv, with a known bad panel, could part it out maybe.

[AFajitas]

Re: Sony KDL55ex640

Tear it down and see if you get any positive results from pressure on the tabs. Might as well rule that out if you can before proceeding.

[nomoresonys]

Re: Sony KDL55ex640

Tear it down and see if you get any positive results from pressure on the tabs. Might as well rule that out if you can before proceeding.

good idea.

[tibimakai]

Re: Sony KDL55ex640

Who made the panel, Samsung?

[smuddge]

Re: Sony KDL55ex640

i believe it is a samsung panel.
only sticker on it is LJ96-05960A

i believe that is a samsung part number.

that is my concern. don't want to get stuck with something i don't need. i am aware of samsungs panel tab bonding problems from the past....

just went through that with an LG PLASMA 50pv400 where bottom half of screen is messed up. I ended up buying new bottom & top buffers. new z and y sustain boards and control board and still have same problem.
costly mistakes.

[smuddge]

Re: Sony KDL55ex640

trashed it. it was a tab bonding problem. what a huge waste.
well i actually will part it out but i hate to throw out a good screen all for a manufacturing problem.

[tibimakai]

Re: Sony KDL55ex640

What kind of tab problem?
Sorry to hear that.
It happened to me too, with a 55EX720. I have bought it for $180, a very long drive and a $75 mainboard later, the tab it was punctured from the blown traces, from the panel's PCB.

[Moreno83]

Re: Sony KDL55ex640

Tab problem does not have to be bad?? Was the picture ok when you used some pressure?
I got a philips ambilight 8404 series , also tab problem. I fixed it with putting some hard carbon paper between the tabs and casing so its pushed down. ( also with double sided tape) Its been working as it should work without any problems for almost a year now.

[smuddge]

Re: Sony KDL55ex640

i agree a tab bonding problem doesn't have to be all bad but I don't feel comfortable selling a tv with a tab bond problem.

it slightly improved with pressure but not completely. still had some lines that faded in and out.

i am just trying to make a few $ right now while im not working and the last thing I want is to sell something to someone and have them back at my door a few weeks later after I have spent the money on a bill or something.

at least i saved the $ and didn't buy anything for it....

thanks for all the suggestions etc.

I really do love this site. everyone is very helpful and very very friendly.

i have a few more to look at and will post if i am having any more issues.

[tibimakai]

Re: Sony KDL55ex640

Repair it and keep it for yourself.