I have a Sony Bravia KDL-42V4100 that will not power on. No clicks, no red or green light on the front, nothing. Opened it up and am getting voltage to my primary side of the power supply, but no voltage to the secondary side. Not sure if its a main board problem, or Power supply problem. Please help
Check all fuses. If you have power going into the power supply board..but none coming out of it...I think you have found your problem. Get a new power supply board.
SOURCE: Power problem with Sony Bravia 40 LCD TV
hello my friend, check the power supply first, probably a fuse,but if the fuses are good you have to call the repairman.
ps. i have the same tv brand new in the box with the screen broken so if you need any parts let me know
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SOURCE: sony bravia kdl-42v4100 no picture no sound
Hi,
Sounds like there is a short on the power board or the power board has gone faulty.
Look on the power board to see if any of the capacitors are bulged or if there are any other components burnt out.
The TV is going into protect mode because of an over current, which points to a short on the board or a component has gone short circuit.
Thanks
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 Bravia KDL-40S20L1 lcd tv has no power no lights nothing
My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.
SOURCE: Sony Bravia KDL-40S3000...standby red light blinks
There may be no horizontal ouput, Check C515 & 516 and the jungle IC, IC206.
Hope that helps
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