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tv turns off by itself 3-4 times in first 30 mins both grn and red leds blink
Problem for Projection Televisions
Generic problem for all Projection Televisions
Sony 57" dlp TV CONVERGENCE problem
By MikeMurphy1 on Apr 23, 2009
I have a Sony 57" dlp KP-57WS500 television diagnosed with a convergence problem.
1. I have the two STK392-560 IC. (I figure I may as well do both of them)
2. How do I get the G-board (brown) out of the TV chassis so I can desolder and resolder the two STK392-560 IC chips? I need to get under the PCB in order to desolder and to resolder the new IC's. Thanks
Mike
Comments:
Apr 23, 2009
- ...you're right......it is a standard rear projection tvApr 23, 2009
- It's specifically a: 57" letterbox wide screen KP-57WS500 rear projectionApr 23, 2009
- The D-Board (brown) and the -Board (green) are attatched with these black clip type jumpers.1. Will these detach, if so, I can easily pull just the G-Board (brown) out of the set making it much easier.
2. You mentioned the resistors.........is it a probability that one or more of the resistors simply overheated with the caked-on dust on the resistors as well as the IC's?
Apr 23, 2009
- I meant D- board not GApr 24, 2009
- got it.....thanksClarification Request
Posted by tek198124 on Apr 23, 2009
Are you sure this is a dlp? DLP does not use convergence chips. This sounds like a standard rear projection tv.
Best Solution
posted on Apr 23, 2009
You have to pull the chasis completly out the set. Make sure you know where all the wires go that u have to unplug. Also u may need to change open resistors near the convergence amplifiers.
Comments:
Apr 24, 2009
- I think you are talking about black ground wires with metal ends. If so, yes they detach. You may need a small flat head screw driver to depress in the middle of the metal head and then pull. Dust has nothing to do with the resistors overheating. When the convergence ICs go bad they can cause resistors in the circuit to go bad. Sometimes you can visually see the burnt resistors. But you should test the resistors. You don't want to put good convergence ICs in with bad resistors.Yes
No
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