Question about Mitsubishi WS-55809 55" Rear Projection Television

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Mitsubishi WS-55809 picture shrank inwards, tv turned off, wont turn back on...I did not see any fluid on any of the three main boards from the CRT's leaking coolant, However..I did experiment with turning it on again...somethings up with the red CRT.. The Green and blue seem to be ok i guess.... when i power the set, the red CRT has an electric arc inside the tube, or whatever it is. I dont know if that's normal or not. When it does, the lights in the room slightly dim for a second. All 3 CRT's glow orange on the bottoms, however the red one is kind of inconsistant, like the electrical arc in the tube is robbing it's power? this seems more like a power problem now...would this be correct? is there a way to disconnect the red crt to see if the set will power on without it?

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  • hellian82 Jun 23, 2009

    is there a way to diagnose the PSU instead of just replacing it? ive got a multimeter handy if that'll help.. Thanks!

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I would be checking the power supply unit instead of messing with the guns at this point.

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Posted on Jun 23, 2009

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1 Answer

My Mitsubishi ws-55809 works fine although the screen turn pink but the picture is still visible. After a while it goes back to perfect color. Then it repeats this back and forth. Sometimes it will fl


Problem is likely on the small circuit board that plugs onto the bottom of the red picture tube---be careful as dangerous voltages in and around that board---each of the three picture tubes has a small board that plugs on the end of the tube.

Oct 21, 2012 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

My mitsubishi ws-55809 works fine but the screen turns pink and after a while it goes back to perfect color. Does this back and forth


Someone with moderate experience would have to examine the red crt printed circuit board--I have seen some of these that develop a cracked ground path on that board but usually it is pink except on the sides depending which ground path is bad.

Oct 21, 2012 | Mitsubishi WS-55809 55" Rear Projection...

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My Mitsubishi HD1080 series screen is coming inward from the top & bottom.. and occasionally red & green lines or black lines will flash through it... It started out just being inwards once in a...


You have either bad convergence ICs or just bad grounds on the IC. I would go ahead and replace the ICs and check those small ohm resistors, as you have to pull the signal board out anyway. For futher instructions see the website www.TvRepairKits.com. They may have what you are looking for. Be sure you have the TV model number next to you. Thanks for asking and show a few hands of support!

Nov 07, 2010 | Mitsubishi WS-55809 55" Rear Projection...

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Mitsubishi big screen Model ws-55809 shuts off after powered.


two possible problems:convergence IC(2pc),or hi voltage output:transistor,flyback,capacitors.

Oct 05, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

How can I diagnose the power supply unit in this set? I suspect it is the cause of my problem. Error code 23, screen shrank in and out a couple times and turned off a couple times, now wont come back on....


Hello hellian82,

The problem is the arcing red tube, it can be replaced or rejuvenated by qualified TV technician. The arcing is the result of a spark gap being formed in the picture tube resulting in a short between the HV anode of the tube and ground. Replacement of the tube is preferred, but the tube can be rejuvenated using a CRT rejuvenator.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Jun 23, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Black and white picture


you have the cables hooked up the wrong way

Nov 09, 2008 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Mitsubishi ws-55809


Sounds like moisture got into control surface.. Try hairdryer around buttons to dry it out..

Jun 30, 2008 | Mitsubishi WS-55809 55" Rear Projection...

2 Answers

Mitsubishi tv model WS-55809


that happened to me and i just gently hit it on the top and it fixed itself

Jun 28, 2008 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Mitsubishi WS-55809


1)Check for coolant leak from CRT onto signal board

2)Possible convergence problem ..................T.

Oct 26, 2007 | Mitsubishi WS-55809 55" Rear Projection...

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