Fix a bad flex tab? From a tv

[freakaftr8]

Re: Fix a bad flex tab? From a tv

Here is an interesting read on this. A repair that was a success using 3m 9703 electrical contact adhesive. Maybe it can work!

I however am facing g a similar scenario with a 50 inch LG plasma. The ribbon had a hole worn in it. I pulled the cable from the screen and am trying to find a replacement.
I'll try my hand at this with the tape method as well. Anum22 keep us updated!

https://www.avsforum.com/t/1398093/b...cable-adhesive

[tom66]

Re: Fix a bad flex tab? From a tv

Well, that's interesting, not seen buffer boards bonded to the panel in any LG/Samsung/Panasonic yet...

[freakaftr8]

Re: Fix a bad flex tab? From a tv

The only pdp panel I have encountered like that is pioneer. 2005 model elite 720p. 50 inch.

[tom66]

Re: Fix a bad flex tab? From a tv

And some older Fujitsu panels, but that looks too new...

[ben7]

Re: Fix a bad flex tab? From a tv

It's definitely NOT solderable, you'll break it. Feel free to try other methods.

yeah the ribbon cable will likely melt...

Yet, I DID dead-bug a DFN-10 chip before!!!

[Anum22]

Re: Fix a bad flex tab? From a tv

Hi all, I'm still waiting for the tape to arrive. Have a question. What about the corrosion that's eaten up? do I need to do anything with that? or just try with the tape ?

[mmartell]

Re: Fix a bad flex tab? From a tv

If you have continuity through it I would say it's the least of your problems.

[Anum22]

Re: Fix a bad flex tab? From a tv

meaning the tape with cause a flow?

[Dang]

Re: Fix a bad flex tab? From a tv

From what I understand of this tape it works in parallel lines, you can see that the contacts have been eaten not only at the normal point at which they bond to the tab, but also up along the tracks too, now these tracks are not linear, they come in at all sorts of different angles and it's these that you will need to use to get this Tv working once more, it will be great to see it working again but your looking at a major headache, it will need a lot of work and probably a near impossibility but as I said before, you don't know till you try, good luck.

[incognito]

Re: Fix a bad flex tab? From a tv

Hi,

I have the exact same issue with my Samsung LCD. Searched everywhere and this is the only thread where someone is actually trying to fix this.

Can you please update on whatever you try and how it turned out. The contacts in one of my flex tabs are corroded but they all seem to be in parallel straight lines in my case. I'll be amazed if you manage to fix this. Good luck and please update.

[freakaftr8]

Re: Fix a bad flex tab? From a tv

I'm close.to trying this.on an lg plasma I have but need a good replacement y ribbon cable. If anyone has an lg 50pa5500 or equivalent 1080p pdp50r4000 panel that's broken and wanna send me the ribbon I'm ready. Even have the 3m 9703 tape ready.to go.

[albertocastillo2001]

Re: Fix a bad flex tab? From a tv

How did it go?

[mmartell]

Re: Fix a bad flex tab? From a tv

Here's an interesting read. Apparently the pitch and spacing of the ribbon connections relative to the resolution of the conductive tape itself is a problem.

http://forum.bongofish.co.uk/index.php?topic=2257.0

[freakaftr8]

Re: Fix a bad flex tab? From a tv

Yes but that is pretty fine pitch when the ribbon contacts the screen. I'm pretty certain that no a tape of any contact typo fix that kind of problem. we have a better chance where the board connects to the ribbon.

[Caleb]

Re: Fix a bad flex tab? From a tv

Has anyone tried using that conductive paint used to repair windshield defrosters? It would be really tough to paint that fine of a line, but it might be possible using a single stiff hair as a brush.

[freakaftr8]

Re: Fix a bad flex tab? From a tv

The problem comes In cause it will not adhere two pieces together you need something with considerable forced to be pushing it against even the tape would probably need pressure to bond correctly.