Question about Sony KP-65WV700 65" Rear Projection HDTV
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if a failure occurs in the 5V Standby Power Supply the unit will
not even attempt to turn ON.
If this condition occurs,
check the following components:
2) 13V at IC501 Input Pin (I).
If missing, suspect T502, D503 and/or C507.
3) 5V at IC501 Output Pin (O).
If missing, suspect a defective IC501.
4) NOTE: Q503 is used as a current source for the AC relay
If the collector/emitter junction of
Q503 becomes an Open circuit,
the set will still turn ON (using voltage through D509) and
function properly with sufficient AC power input.
If the AC power input is weak (Low Voltage ~90VAC, the unit
will have difficulty turning ON
without Q503 functioning properly.
5 ) If the 200V line on the CRT Board equals the voltage
value of the Power Supply (135V ) then your Flyback
is not oscillating
Posted on Sep 14, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
I had a similar problem. I had a 52"
RCArear projection tv. It
would do this when I initially turned on the television, but then after a few
"on/off, on/off, on/off" cycles it would stay on. Eventually it
started doing it more; until finally there was a spark and that was it. The tv
was dead.The bloggers called it "the blinking green light of death" (because
of green light on the panel).The
power board is going out.ALSO holding down the Input and Menu buttons afterward will give you
some diagnostic information via 2 sets of blinking indicator lights.
You may very well have issues with capacitors on this set being that it is or very similar to the V26 chassis. Since I have spare test lamps laying around, I would normally try that first. If the lamp still would not stay lit, I would then suspect the electrical chassis (capacitors). When I suspect the chassis, I can usually verify it by pulling it out and partially disassemble it and find blown capacitors
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