Sony bravia kdl 37s-400a

give a good whak on back of picture tube

If you can, please provide a picture.

go on line to sony they will send new one at cost

I will say 80% is the panel, another 20% if you can see the picture on the bands, may defective the time control board.

Hi,

It could be 1 of 4 things:
1. One of the ribbon cables has worked itself loose (Simple Fix)
2. One of the assembly boards maybe faulty
3. The driver board which feeds the panel maybe faulty
4. The panel is faulty

The driver board in the UK costs approx £70 and approx £35-70 to fit it if this is the fault.

All other parts are between £80-160 and approx £35-70 to fit it if this is the fault.

The panel will cost approx 50-75% of what the TV was worth when you bought it - "Repair versus Replacement"

Thanks

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

You should have a 1 year warranty from Sony. Call them before it expires. This is probably a LCD panel issue.

sony bravia lcd troubleshooting
https://www.google.com/search?client=ms-android-att-us&ei=O8blWLC3CIvKjwTi54DIDg&q=sony+bravia+lcd+troubleshooting&oq=somy+bravia+lcd+troubl&gs_l=mobile-gws-serp.1.0.0i22i30k1l5.154.16000.0.16940.47.34.1.3.3.0.1404.11353.0j9j4j5j2j2j3j2.27.0....0...1c.1j4.64.mobile-gws-serp..26.21.7197.3..0j0i7i30k1j35i39k1j0i131k1j0i67k1j0i10k1j0i13k1.Ar_4YkwTSbY

Are the Lines Symetrical in distance and space? Makes a diferernce..

NISK-TRY USING YOUR DIRECTTV MENU AND LOOK AT THE SCREEN FORMAT SETTINGS AND MAKE SURE YOU ARE AT 16X9 SETTING.JOETV