Power display not lit, remote controls and buttons are not turned on, after dismantling machine measuring standby 5 volt normal power button not aging, contact is good, remote-control signal is also normal. Display of the filament voltage AC-28 volts is normal. 5 v signal waveform normal oscilloscope test has been available to the CPU signals, check out information on CPU, test when the reset signal waveform anomalies, small traces of Exchange components measured at 4.9 volts digital multimeter, check the reset signal sources, found that filtering capacitors 47UF/16V pin small black stains, try substitution, troubleshooting5kJservice manual download site