Sony KDL-46Z4100 bad T-Con?

[steves7839]

Re: Sony KDL-46Z4100 bad T-Con?

"1) I got a 2nd bad T-con board off eBay (sounds crazy, but with my other Sony TV I ended up getting THREE bad T-con boards before I finally got a good one and everything worked), or ..."
This was my exact experience with a Sony 46XBR6. Four T-Cons were tried and returned, one sold and refunded, finally one worked.

On every T-Con I received, I checked all seven surface-mount fuses front and rear.
I also checked for 12V supply from Main Board to the T-Con fuse next to the LVDS connector. I had to have my main board reworked because its 12V fuse was blown by a T-Con fault twice.
The vertical band seen in the photo above may be caused by a tab bond fault. Check Youtube for some panel workarounds, then consider your readiness to attempt disassembly to the degree necessary.

[ivtec]

Re: Sony KDL-46Z4100 bad T-Con?

I had one just like that one and went right in the trash bad panel,still have all the good boards for it.

[Daveleone]

Re: Sony KDL-46Z4100 bad T-Con?

Follow up on this. I am convinced that the panel is bad. I was recently working on fixing a computer monitor and accidentally ripped off one of the side tab bonds and the screen did exactly what this Sony panel is doing. I am guessing one of the tab bonds is bad (or something in one of the side tabs is bad) and pressing on it just isn't doing the trick.

I'm going to scrap the TV for parts. Thanks for all the feedback/help! --Dave

[Davi.p]

Re: Sony KDL-46Z4100 bad T-Con?

you make your diagnosis only watching the screens, not any measurement! Are you a tech or an observer? Not good giving up like this...

[Daveleone]

Re: Sony KDL-46Z4100 bad T-Con?

you make your diagnosis only watching the screens, not any measurement! Are you a tech or an observer? Not good giving up like this...

I'm a hobbyist, not a tech. And I make my decisions based on my observations, based on reading threads of others' experiences with the same TV, and based on the expert opinions of others on badcaps.

I do take measurements, but at some point the effort outweighs the potential value. And I don't have the time, the skill, or the tools to do microsoldering, so my ability to troubleshoot is a bit limited.

I do appreciate everyone's help and input though, and I have saved several TVs thanks to badcaps forum that would otherwise have ended up in the scrap heap!