Question about Mitsubishi WS-55909 55" Rear Projection Television

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46 Inch Mitsubishi PRoj. TV. 7 years old. Starting to randomly lose Cable signal, than come back up after a few seconds. No predictable time of the day or duration. Any pointers will be appreciated.

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  • rasdes00 May 14, 2009

    Thanks for you pointers. I will try the VCR solution and see if it works. Chaning the input to Channel A or Chanel B makes no difference.

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Most likely the set is loosing the ability to tune channels. The tuner will need to be replaced. If you have a cable box set up or even a VCR you can use that for your tuning and use the television as a monitor and use the video inputs on the back of the set. They are the Yellow, White and Red connections. You may also be able to use Ant-B, as it has a separate tuner.


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Posted on May 14, 2009

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Mitsubishi 55" big screen TV powers down after 70 secs We had a power outage in the neighborhood, after which our Mitsubishi 1080 HDTV WS-55909 only had a blinking green light on the front (no variation or pattern), even after the set was powered down. Upon reading online, it appeared the DM module capacitors were the likely culprit, so I sourced (7)1000 microfarad capacitors and replaced them, then reassembled the TV. This was the first time I'd soldered on a circuit board, so of course a lot of things might have gone wrong. However, after that the TV now powers up, but I only have a blue screen and cannot get the remote to work except to power the TV on and off (tried changing batteries in remote, reprogramming remote per setup manual, etc). Further, the TV powers off after 1 min and 15-20 seconds. I then tried to see if I could get any of the attached devices to work on their own with no other devices on except the TV. Each of them yielded a blue screen (X-Box, VCR/DVD recorder, Wii, cable) except the DVD player -- which displayed a great picture! The problem is the DVD will play 1 min 15 seconds then the TV will shut down and the green light will blink steadily (no pattern) for 60 seconds, then power down. And this only works if the DVD is on before the TV is turned on, and since the remote doesn't work I have to press "play" on the DVD player. The DVD is hooked to Component Input 2 so that input appears to be working fine. The VCR/DVD recorder is attached to Component Input 1. When I had it powered up and turned on the TV, I got a blue screen. However, when I left the VCR/DVD on and then turned on the DVD, there were jagged lines on the TV for 3-5 seconds, then the TV made a popping sound and shut off. When I then turned on the TV (i.e., with both the VCR/DVD and the DVD on first), the DVD worked but could not switch to the VCR/DVD without the TV turning off. I also tried switching the cabling for the DVD to Component Input 1, but the DVD no longer worked. When I tried the VCR/DVD on Component Input 2, it still only yielded a blue screen. So is Component Input 1 bad? And why would the TV work with the DVD in Component Input 2 but not the VCR/DVD? Obviously I have multiple problems here. The first one to deal with is the TV shutting off after 1.25 minutes. I am unable to see where I can get an error code when the blinking light just blinks quickly without any pattern, and neither the front panel controls nor the remote control work. Perhaps most of my inputs on the rear of the TV don't work now except Component Input 2 but I don't know how to test this. So I made a little headway with the capacitor replacements, but not sure what I can do at this point. Any suggestions? I've seen references for other Mitsubishi big screens that shut down like this, and the fix was related to the output power module, but not sure if it applies the the WS-55909. Thanks in advance for any help you can provide. estout7

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