Question about Mitsubishi WS-55819 55" Rear Projection Television

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Mitsubishi ws-55819 power problem

My 5 year old Mitsubishi WS-55819 projection TV has a power problem. When I press the power button it turns on for about 2 seconds and then turns itself off. The picture doesn't come onto the screen as the power cuts off so quickly. I opened the back and there is a small black diode type thing (possibly a relay) on the middle PC board towards the back that clicks when it turns on and off. Someone suggested a leak from the 3 bulbs could be a cause but I cannot see any leaking substances anywhere. Does anyone have a suggestion to figure out what's wrong? I don't have electrical test equipment for troubleshooting. Thank you...

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Re: mitsubishi ws-55819 power problem

Hello DaveDaveDave, Ok let's levelset as is said in the business world today. it looks like you have an overcurrent protection problem which means that the tv set has a component that is causing excessive current to be drawn. Now this can be caused by a component withc has become "leaky" (by leaky this means the inability to prevent the flow of electrons as related to dc voltage). Your last statement is the reason I am replying how I am. Since you don't have equipment your only option is to take this set to a TV repair shop and have it repaired. I have given you a possible cause a component in the HV section that may have gone bad, but without substantial data as to the voltage levels and signal appearances, one can only guess. I hope this helps and you find what you are looking for. Thank you, Shuttle83

Posted on Sep 12, 2007

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When it shuts off and the green power light goes off, press both the menu and input buttons on the front of the set (not the remote) and hold both for about five seconds and release.

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try the self test: when it goes off press and hold the menu and input buttons at same time for about seven seconds and release both.

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Mitsubishi WS-55819 power issue

No, that'll do it. Once you've changed em you'll know right away if somethin isn't right. But take faith and fire that puppy up. If the pix is good you did good. If something is amiss. I'd be happy to walk you through it. My money is on you though.

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If F9A04 and F9A05 are open the convergence ICs will need to be replaced as well as the two pico fuses. You will need two STK392-570 Convergence ICs and two 5 amp pico fuses. You ca get the replacement parts at the following link with free installation instructions. heres thelink.

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Code 22 indicates that your set is in shut down due to what is called Short Protect. The most likely cause is the Converge Ic's drawing too much current and opening one or 2 fuses. Normal repair cost varies by area and servicer. Expect 250 to 350 plus the service call. I normally do this on site.

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Bad convergence ic and should replace caps also

· ·
replace DM

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