Sony Bravia KDL-46Z4100: Dark in the middle, left side good, right side "freezes."

[leegee_77]

Brand new member here. My five-year old Bravia KDL-46Z4100 developed a problem last week. While watching it, a black horizontal line in the center third showed up and flickered for a minute. After a bit of time, the lower third center of the screen went dark (like a dark rectangle), then a general dark smear developed top to bottom in the center third of the screen. The left third looks okay, and the right third sort of freezes and holds the image for a bit but never really recovers.

This lasted for a bit of time that night, and then corrected itself like nothing was wrong. TV ran fine for a couple of nights, then it happened again, same way. The last time it happened, the picture didn't recover and the picture stays as described above. If the scene is well lighted, the center third shows up, just darker with muted and off colors. In dark scenes, the center third is barely visible - just dark.

I have the back off of the unit. I see all of the major components. I work in the electronics industry, but this is my first foray inside of an LCD TV. All I know about them I learned in the past couple of hours perusing this forum!

For reference, here's a pic from this forum of a TV identical to mine. Inverter on left (I removed the EMI shield to look around), T-CON at top (I have not poked around there at all).

https://www.badcaps.net/forum/showth...ny+KDL-46Z4100

Any thought would be appreciated!

Thanks,

Lee

[tom66]

Re: Sony Bravia KDL-46Z4100: Dark in the middle, left side good, right side "freezes.

This is most likely a tab bond fault. There are videos on youtube which relate to this problem.

http://www.youtube.com/watch?v=purk_SyiT44

^different problem but same root cause

[leegee_77]

Re: Sony Bravia KDL-46Z4100: Dark in the middle, left side good, right side "freezes.

Hi Tom66,

Thanks for your reply. I checked around all of the tabs to try to make any changes and had no success. We've pretty much decided to give up on the good old Bravia and get a replacement TV. Probably a Samsung 55". A little disappointed that a five-year old TV has gone, but that's the way of it these days.

Best wishes,

Lee

[RJARRRPCGP]

Re: Sony Bravia KDL-46Z4100: Dark in the middle, left side good, right side "freezes.

May have crap caps.