The problem in most of the case are:
1. Interference from a defective fluorescent lamp at your room sending signals to the infrared receiver of the TV.
2. Defective infrared receiver itself that sending noisy control signals to the CPU.
3. Defective manual control withes it has leakage.
4. Water damaged control switch PC board.
SOURCE: Sony BRAVIA KDL-40W4000
Hi there,
I've been looking into this myself as I've also recently purchased the KDL-40W4000. I was watching a murky old film and was getting a bit of sludgy ghosting but found that by reducing the contrast to 25, setting the backlight on low, colour on neutral and the brightness about 40-60 (and taking ALL advanced noise functions off), this reduced the ghosting considerably.
BUT, this is quite a cool and dark image. If you watch standard TV and films mainly, a variation of the Cinema setting is probably the best overall setting i.e.
backlight: min
contrast: 79
brightness: 50
colour: 53
colour temp: Warm 2 (although Warm 1 is less yellow and still fine)
sharpness: min
noise reduction: off
mpeg nr: off
contrast enhancer: off
colour space: standard
Ben, UK
SOURCE: Auto Switch does not work for HDMI inputs
Try this:
http://www.avforums.com/forums/6539544-post3094.html
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: sony kdl-40v5100 has handshake problem
1.This issue sounds as though the TV connection circuit has an issue.
2. You have changed the DVR and the HDMI cables and you still have an issue with the video (pink screen) indicates a video circuit issue ( improper voltage or current) at the video section of the circuit.
3. This will require some troubleshooting by a qualified tech.
4. To make sure, try connecting another properly working LCD TV to the cable box or DVR an check.If you get a picture and sound properly it is the TV.
5. Usually a cable box is QA'd (quality assured) by the company and will not be sent unless tested 1st
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