Question about Mitsubishi WS-65807 65" Rear Projection Television

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I have a Wd-65737 mistubishi dlp and i have sound and no picture. It cuts off also after being on for about 3 minutes with no picture. I have tgried the reset option by holding down the power button and i have unplugged all connections and unplugged tv from surge protector still nothing. This TV is only over 1 1/2 years old .. please help i didnt opt for the warranty option .

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By now this aging TV has many, many bad solder grounds. The first place to start, is to pull the convergence board out. You will see an STK-393-110 that has rings around the pins. This is bad grounding. Please resolder this, and do not use excess solder or you will short the pins together. Then you should inspect the board for any and all ICs attached to heat sinks and resolder the pins to the board. Look for bad grounds on power resistors, transistors, diodes and capacitors. Also resolder areas where the board meets the other board. These are jumper jack connections. These can be a problem, solder as necessary. The second board to inspect is the power supply. It is the one with the flyback transformer. The first thing to find is the vertical IC. This is usually the reason you have no video. Please resolder the pins of the vertical IC.Do not to use excess solder or you will short the IC. Resolder the flyback transformer,horizontal transformer,power resistors, capacitors, transistors attached to heat sinks etc. Resolder the jumper jack connections that connect the boards etc. I cannot say enough, you must really inspect to find these bad grounds.I do not believe you need to replace any parts now. Just resolder and reinstall. This will take great patience and skill. Thanks for asking and show a few hands of support!

Posted on Mar 19, 2011

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