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This is an indication that you have a problem on the power
supply section or on the load because of the following reasons :
1. Over Voltage - the regulator
might be cycling on over voltage due to lack of load.
2. Over Current Protection - excessive
load or faulty power supply cycling will
trigger the over current
3. High voltage - there might be
an excessive high voltage or some other system detecting an out of regulation
condition. However, in this case, there should be some indication that the
deflection and HV is attempting to come up - momentary whine, static on the
4. Leaky Capacitor - a dried up
main filter capacitor or other filter capacitor in the low voltage power supply
that is producing an out-of-regulation condition. A bad filter capacitor on the
output of a series regulator may result in excessive/drop of voltage causes your unit not to power up unless isolated.
5. A problem with the
microcontroller, relay or its driver, or standby power supply.
This is not DIY and quite technical so I've advice you to
look for a qualified technician or send it to repair shop to isolate the
Thanks for using fixya.
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Sony FD... • Answered on Jan 20, 2011
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