Rank: Wiz
Rating: 83%, 21 votes
IF the Standby Red Light does not come on when you plug in the TV:
1) Check fuse on back panel next to power cord. Pull out cord and pop fuse holder out. On an ohmmeter, it should read 0(short)-that is a good fuse.
2) Check the fuse on power supply board next to power connector. It is soldered onto board.
3) Be careful with this step:
With all boards screwed in place, plug in TV and then unplug it. Next take a Voltmeter set on 200 Volts and test large electrolytic cap in middle of board-should have @100-200 volts on it.
Do not short the capacitor-big fireball flash explosion if you do!
If 1-3 test OK, then:
D10 is shorted.
HER304 in middle of
Power supply board near large electrolytic cap. Replace with same diode or Radio Shack 276-1144 3A 400PIV Diode. PLEASE BE CAREFUL WITH HIGH VOLTAGE PRESENT ON POWER SUPPLY BOARD. UNPLUG POWER CORD!!! OBSERVE PROPER POLARITY WHEN REPLACING DIODE-LOOK WHERE THE BAND IS.
Comments:
Oct 06, 2009
- MUCH CHEAPER THAN SHIPPING TV TO THEM! A few bucks for a 2-pack of diodes at the Shack!Oct 06, 2009
- Apparently, you've posted your problem under the wrong model- the solution only applies, as far as I know, to the MLTD2622.