Question about Samsung Televison & Video
I jumped the wires from the power unit to induce a display test with no success. I am getting standby power from the Power Unit. Vs and Va are not testing to the right numbers, but I am wondering if that is because the plasma display is not on. I am wondering if this is definitely the Power Board needing to be replaced, or might it be the Main or Logic board too. No capacitors appear to be damaged.
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Posted on Jan 02, 2017
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(Green Power LED will go Green the Go Off) Brief rise then collapse of the Vs and Va voltages.
This indicates a "Load" on the line.
Pull the CN-64 connector feeding Vs/Va voltages to the X-SUS.
Take an ohmage reading from the Va and Vs lines on each PWB.
This means you have to read the Connector on the Power Supply and the pulled connector going to the X-SUS.
See if there is a low value. Low value indicates a defective PWB.
Normal reading should be infinity. (Using the diode mode on the DV/Voltmeter, there will be a brief charge
time, then infinity.) In other words, it may appear as a low ohm reading, but should rise to infinity or open.
(Also not, if there is a charge on the line, the meter may show a low. You must Pull the CN68 connector and take
a reading again).
The line should now be infinity when reading the Power supply pins for Va and Vs and when reading the
connector going to the X-SUS PWB.)
If a Low is see on the connector, pull the CN32 Connector. (Bottom right hand plug on the Y-SUS PWB)
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