Question about Mitsubishi WD-62725 62" Rear Projection HDTV-Ready Television
Mitsubishi WS65869 Big Screen TV. Connected to high definition satellite TV, low resolution can be seen fine. When the channel is changed to high resolution, the picture looks like a lack of horizontal sync for a second, then it turns to the blue screen with the error message Check connections or power RGB may be invalid. I started noticing these problems after I replaced a convergence IC and after I upgraded to High definition Satellite TV. I am wondering if this may be a problem with the capacitors on the DM board, as I did experience a flashing green LED, but seemed to solve that by making sure the back cover of the TV was on, and there was no external light shining on the back of the TV as I thought there may be some light sensitive optocouplers in the circuitry. When I pushed the TV back to the wall and dimmed lights, my flashing LED was solved.
The typical cost to get this fixed by a pro is about $300 - and it doesn't mean that he/they will do a job better than you do. The parts are less than $100 (about $20-$30 for the IC's) if you want to do it yourself. Replacing only the IC's MAY solve the problem; however, many people have also had blown resistors requiring replacement. Why would you ask should you replace both of the IC's if only one is shot?! If one is shot the other one is not far away and for that little price of the chips it worth changing them both at the same time. Also the convergence board should be checked for cracked solder. If you replace the ICs and the resistors are shot, the ICs may blow again almost immediately, meaning you may have to do the repair twice. Pushing the TV back might have solved the problem for some time; I believe you should check for cold solder joints.
Please do accept the solution and revert for further assistance.
Posted on May 25, 2009
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Posted on Jan 02, 2017
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