SOURCE: How do I hook up the HDMI cables to a cable box
how do i hook up hdmi cables to cable Sony KDL Bravia LCD HDTV
SOURCE: i have a sony bravia kdl-26m4000
Cable boxes have notoriously flaky HDMI outputs. I have seen No pic and no sound with their HDMI outputs as well as a host of other problems. You can try getting the cable box replaced; unfortunately I have seen multiple cable box replacements not fix the problem. The best solution is to leave the component cables connected; you're not losing hardly any resolution/picture quality by using the component instead of the HDMI. Solution #2: switch to a satellite provider. I rarely see HDMI problems with satellite boxes
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: hi! I have a problem with my sony bravia lcd tv
You may have a case of a bad signal board. The clue was that your power button on the tv and remote are the only ones functioning. If the tv is still under warraty, call the service number to get help!
SOURCE: 40xbr2 bravia kdl sony LCD tv. The screen shuts
Problems relating to the automatic turn on and turn off of a set like this usually point to the main board being an issue. For this set, I believe Sony refers to that board as the "AU" board.
It's probably not the G/Power Supply board, especially if it turns itself on. Power supplies will turn a set off, but rarely--rarely--turn itself on.
If there's no kind of extended warranty involved here,
you could be looking at $500.00 for parts and labor to repair this kind of problem.
As always, try any software/firmware updates Sony might have available on their website prior to pursuing a repair visit.
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