Question about RCA D52W15 TV
I REPLACED THE FLYBACK AND CAPACITOR SAME PROBLEM GREEN POWER LIGHT COMES ON BLINCS 2 OR 3 TIMES EVERYTIME LIGHT GOES OUT IT MAKES A CLICK SOUND. CAN ANYONE HELP BY GIVING ME DETAILED INSTRUCTIONS ON HOW TO FIX.
Usually this is a sign of the capacitors on the power supply board failing, so you can either try replacing them or replacing the board itself which would be easier especially if you don't know how to replace capacitors. Replacing the board would be a plug in component. If you can, I would get the current power supply board and get it tested at a tv or electronics shop before moving forward. The click most likely is from this board not turning the set on.
Let me know what you find
Posted on Oct 07, 2009
a) since you have replace the flyback can it be possible for you
to measure the voltage that it is having? , have someone to help
you , if you cant
b) it has a supply coming from the diode should it be still 75V
then that flyback might be not matched or properly not compatible
or partially shorted.
c) if the supply is at least 110V then there is no oscillation,
check the oscillator stages it might be blocked.
d) if there is no voltage it means the horizontal output transistor
e) that transistor is connected to the flyback
f) have that transistor extracted and test the collector and emitter
g) on the voltage reading the negative probe should be on the
ground side of the unit, not the ground side of the AC plug.
h) please be very careful on the flyback area.
you can safely discharge the big capacitor with a 4.7K 5W
resistor to be safe from output voltages of the psu.
i) use isolation transformer if you have , or a variac when measuring
j) please unplugged the unit when extracting and looking for shorts
Posted on Oct 07, 2009
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Posted on Jan 02, 2017
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