Question about Mitsubishi WD-62725 62" Rear Projection HDTV-Ready Television

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Cannot watch 780 or 1080 resolution video, but can watch 480

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.

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  • Richard McDermott May 26, 2009

    Thank You, I will check it out with the ICs. I believe my the real solution to the failure to watch HD was that the "Native function" of the satellite box was set "on", and the 720P was also set on. Once I resolved these two settings, I was able to watch 1080i video. Thank you for your solution of the solder joint and IC for the real reason of the flashing green LED.

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Hi

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.

Thanks
Rylee

Posted on May 25, 2009

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Though the DMR-EH50 recorder can only record at Standard Definition (SD) broadcast resolutions, I connect the DMR-EH50 to my High Definition TV using the three progressive scan YPBPR output cables and switch my HD-TV into the YPBPR mode when I want to watch shows from the DMR-EH50.

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Visually speaking, the same appears to hold true for playback of programs recorded on the DMR-EH50's hard drive even though down converted via the DTV converter box, and when played back on an HD-TV using the YPBPR progressive scan cabling hookup.

I also been able to successfully record programs from the DTV converter box to the DMR-EH50 recorder in both 16:9 wide screen and 4:3 normal aspect ratios, but again only in Standard Definition quality.

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If the satellite runs into the dvd unit and from there the dvd is connected to tv you may have to power off or on the dvd player to resolve conflict.

Another problem may be the resolution setting if your tv is Hi Def. Set the tv and receiver to the resolution e.g. 1080i.

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