Question about Televison & Video
Are your aware of the small pushbutton "master switch" which is located below the tv screen ? it is normally located on the right side about 4" from the edge. if turning this switch on doesn't fix it, replace the "smps"...switched mode power supply
Posted on Jun 19, 2009
To start ensure that is picture in picture on, that will cause sound but no picture.
Also ensure that you have sound but no picture on different input , and with different devices attached, otherwise the problem can be video cable or input board.
Also try a factory reset. Press Menu Button, then in sequence 4, 7, 2 and 5 to enter service menu.
In Service menu Go to Options, then chose Factory Reset, wait a couple of seconds
Press Escape, Standby and Unplug from Main, waiting ten minutes , then turning TV on again
Other than this , and the PSU, parts that can give you no raster on plasma TV are the Sustain boards , input output connectors, and the buffer boards.
Parts must be tested before replacement.
Posted on Jun 19, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
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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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