Sony bravia kdl- 52w4100 52 in. LCD tv

SOURCE: We were watching tv on

sounds like the lcd control board malfuntioned. call sony and im sure they will have you bring it to a repair shop at no charge

SOURCE: sony bravia kdl-52w3000, turn tv on, no picture or

Most likely this is caused by a defective main board. Changing the main board will fix the issue about 95% of the time.

To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).

SOURCE: vertical lines on sony kdl-46v3000 bravia lcd tv

i have the same problem, apparently the LCD panel needs to be replaced and this will cost more than the tv is worth... Advice is to not buy a sony again, because this is a common problem and they wont extend the warranty, even if its 2 weeks after it runs out...

SOURCE: 12 little horizontal lines in Sony Bravia KDL-52W4100

we have the same exact tv and it is not even a year old. we are told that it is the display panel and it is a well known problem with this tv. we were also told that there is a shortage of these parts. they had 283 on order, but only received 35. you need to call sony and tell them that you have this problem. they should warranty this for you even if your tv is 3 months past the warranty period. since this is a well known problem with this tv, keep on them.

Testimonial: "It in fact was a part of the lcd panel...the t-con board. I was able to research it and bought a box of parts off of a tv like mine and fixed it. Ron"

SOURCE: How to fix problem with Sony TV.When turn on sony

I just fixed one with the same problem. The light flashed 13 times.
I had to cut one trace on the hv board to one of the lamp drivers.
There is a slight but barely noticeable darken line across the screen but the tv stays on now and the picture is good. I don't
know if the lamps can be replaced but why bother now.