Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

[Chungalin]

I have this Sony TV for repair. Global color problem, dark, reddish, looks gamma problem. Since panel is an AUO T315XW02 V.E, I had the illusion of finding an AS15 IC in T-CON, but bad luck this time. The most similar part is a TQFP48 IC (like AS15) but this one is from Lattice Semiconductor, LC4064V-75TN-10I. I can't find enough information to deduct they're equivalent.

Any ideas?

[Chungalin]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

Now I don’t think that LC4064V has anything to do with this. This T-CON has a AS34-G instead of AS15-G.

On the other hand, now I notice that it has a subtle ghosting effect too. On brighter areas is easier to see remains of previous frames.

[budm]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

Not that IC.
http://pdf1.alldatasheet.com/datashe...-75TN100C.html

[budm]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

Now I don't think that LC4064V has anything to do with this. This T-CON has a AS34-G instead of AS15-G.

On the other hand, now I notice that it has a subtle ghosting effect too. On brighter areas is easier to see remains of previous frames.

14-pin IC? Not that either.
https://cdn.badcaps-static.com/pdfs/...5fad678518.pdf
https://www.ksp-electronics.com/en/p...ec5534-tssop14

[Chungalin]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

Yes, I was investigating those other ICs on T-CON. Both EC48324-F and EC5534-G (AS34-G) are quad operational amplifiers.

But I’ve seen a case where AS34 failure has very similar effect to AS15 failure:

http://www.reballing.es/viewtopic.php?t=9190

[Chungalin]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

I ordered a new AS34. In the meantime, I've got an equivalent EL5420CRZ quad operational amplifier from another T-CON, replaced it and now color is OK.

So, it seems we have a new usual suspect like AS15. Thanks, E-CMOS, for such reliable ICs and for providing easy income to technicians.

[dick_barton]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

Thanks for the update. Will prove useful to other Forum members.

[Chungalin]

Re: Sony KDL-32T3000, AUO T315XW02 V.E panel, bad color/gamma, possible T-CON?

The TV returned after a month with about the same problem.

I bought the first AS34 from a spanish eBay seller, because I couldn't wait for a chinese seller, and I paid for just one unit the same as for 10 units from an AliExpress seller. But I got it in a week, so far so good.

I noticed that IC lettering was quite different, see attached picture. To the left, the original IC. To the right, the eBay replacement. See wider typography. Since I didn't have anything else, I replaced it and it worked. But it seems that it didn't last more than a week.

At the same time, I ordered 10 units from AliExpress, trying to choose a seller with pictures showing a better matching IC lettering. I chose "YT Electronics components co.,ltd", store 1195234. It took one month and half to get here, and lettering is practically identical to original one. Also, the seller included a gift USB microSD card reader and a friendly hand-written note.

After replacing, the colors are OK again. Let's see how long it lasts this time.