Question about Sony KDL60EX500 TV
Sony KDL60EX500 power comes on indicator is green.No sound no picture. No back light or video. Cannot shut off with remote or TV switch. Power supply voltage is good but not drawing current (running cool).When power reset, starts in standby mode.Remote or switch turns the TV on from standby. Any ideas ?
Likely power supply failure. Sometimes affecting the series of sets.
Remove the back panel (unplugged, of course), locate the power supply which will be a separate block of components with larger, coarser parts.
The parts most likely to fail (electrolytic capacitors) may be exposed enough to examine them.
Look for cylindrical parts, usually 90 degrees from the board plane, with exposed aluminum that is scored, mostly in a "Y" pattern.
Look for any whose tops are bulging or indeed split open along the score lines.
This is about the only visible indication of failure, otherwise a special (LCR) meter will be needed for testing.
If you find such parts, you might try emailing Sony to see if they have an exchange program on the supply; these are not tough to remove and replace.
If not, try to find a local tech who will check the possible failed parts and replace them.
If you go this route, tell them to add 0.1 to 0.47 microfarad (25-50VDC OK) ceramic caps (under the board) parallel to the replaced parts
This will prevent renewed failure of the capacitors by bypassing the chemical caps for the high frequencies which causes them to fail.
Posted on Nov 26, 2014
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Posted on Jan 02, 2017
If you have the above model, then the four blinks indicate a backlight failure. The back light inverter board might be defective or the voltage from the power supply (+24v) is low or missing.
Let me know if you require further assistance.
Posted on Dec 30, 2008
We had the same problem, not quite as often...but I ck'd the power cord connection at the back of the tv and it was loose. I know,sounds so simple - but it worked. Good luck.
Posted on Oct 19, 2008
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).
Posted on Oct 07, 2009
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