Sony kdl46s4100 half a picture

[AllGo'N'Show]

Re: Sony kdl46s4100 half a picture

Thanks for the starting spot freak, I will dig in tomorrow in the storm and try and get started on it.

EDIT: found a service manual should help to get started Tcon and boards available to buy or ebay for used?

[lookimback]

Re: Sony kdl46s4100 half a picture

Panel failure is very common in that model. I had one 2 or 3 weeks ago, and a couple shortly before that. It's almost always the leftmost tab. Sometimes rightmost one though. The chip on the tab starts to come loose.

[lookimback]

Re: Sony kdl46s4100 half a picture

I'd try disconnecting a ribbon cable from Tcon, one side at a time too. See if that has any effect. I'd still vote panel failure though. Seen too many. Try flexing the panel some too, that will usually either make the picture clear up, or go out entirely. Either way, it means a bad panel. Flexing is easier to do with the back off. If it does go out entirely, keep in mind that the picture won't come back until you cycle the power. Took me forever to figure that one out.

[AllGo'N'Show]

Re: Sony kdl46s4100 half a picture

Sweet, thanks for the tips! I see bad panel all the time and the 'temp' fix seems to work most of the time so fingers crossed hoping for the best.

[lookimback]

Re: Sony kdl46s4100 half a picture

Next one I get, I have some new ideas to try. The temp fix works sometimes, but will eventually fail. I have a better idea than wedging something to press against the tab. My idea is to clamp the tab, across the part where the IC is, with strips of hard plastic. Maybe cut a couple strips from the housing of a TV that's been parted out. I have a basement full of them. Anyway, the idea is to apply even pressure from both sides of the tab. Enough to keep the chip firmly in contact with the tab, but not so much that you crush it. Couple small screws, one on each side, close to the tab should keep it together. Since it wouldn't be relying on the frame and backlight assembly to hold it together, it may be a more reliable fix. May have to do some trimming on the metal frame to make it fit.

[AllGo'N'Show]

Re: Sony kdl46s4100 half a picture

Next one I get, I have some new ideas to try. The temp fix works sometimes, but will eventually fail. I have a better idea than wedging something to press against the tab. My idea is to clamp the tab, across the part where the IC is, with strips of hard plastic. Maybe cut a couple strips from the housing of a TV that's been parted out. I have a basement full of them. Anyway, the idea is to apply even pressure from both sides of the tab. Enough to keep the chip firmly in contact with the tab, but not so much that you crush it. Couple small screws, one on each side, close to the tab should keep it together. Since it wouldn't be relying on the frame and backlight assembly to hold it together, it may be a more reliable fix. May have to do some trimming on the metal frame to make it fit.

Is this a Sony issue for you to have this much experience with this issue or do you get alot of this model? Interesting points I will keep in mind when it comes apart! Thanks again!