Question about Mitsubishi WS-65907 65" Rear Projection Television

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Location of temperature sensor on Mitsubishi WS-65907

I have downloaded the tech layout from, but im not an engineer, so I am having trouble reading it. My unit gives the 1-2 light error (menu and input button pressing). I found that if I take off the front panels and place a fan in there the unit stays on for longer. I am wondering if there is a specific place inside that I can place a fan to cool a specific sensor that is malfunctioning, any help would be appreciated. [ben dake @ g mail . com] (no spaces)

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It's been a little over a month, since your post, hopefully you have your problem resolved. If not, perhaps I can help. I'll call my response a SWAG rather than a WAG, so I hope it's helpful to you. First of all, let me answer your question, I'm not aware of any temperature sensor in that model. Less than 2 months ago I got a WS-65907 with a power problem. When I turned the TV on, the green power on light would come on for a few seconds then it would go off. The problem was a couple of pico fuses (5amp) and the convergence IC's. One of the IC's was shorted and that's what was blowing the fuses. Anyway, the IC's run hot, they are on a large heatsink. You may be able to purchase some thermal paste from Radio Shack, etc and put it on the back of your IC to help dissipate the heat. It's good that you're getting a 1-2 error code which indicates no error detected. In my research on the Internet, I read that Mitsubishi didn't put enough of the themal compound on the back of the chips and that's what caused them to eventually go bad.
If you've removed the front panel (and you can see past the neck of the 3 tubes) you should be able to see the vicinity of the IC's. they are located on the Middle board, they are attached to a metal heat sink (approx 4"X 8") the IC chips have a narrow metal strip holding them onto the heat sink. You may also consider getting some freeze spray that can be put on electronics. It may be useful in determining if this is your problem area. If so, you may luck out by applying some paste to increase the thermal transfer and keep the chips running cooler. Good luck with your TV.

Posted on Mar 12, 2009


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I just replaced the 2 Convergence IC's now i have a bad pitcure

Yes, did you check the group of identical 3.9 ohm blue resistors in front of the chips? If even one is open or discolored in the middle convergence will not adjust in some area.


Feb 02, 2010 | Mitsubishi WS-65907 65" Rear Projection...

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Mitsubishi ws-65907 tv will not power on

one of the two pico fuses that protect the convergence chips this model uses is gone--see attached photo--

NEVER change just the fuses---if one of the two fuses is blown--the convergence chips got them-----

there are several ways to proceed from here-check the two fuses indicated in the photo and tell me if either or both are bad.



Jan 03, 2010 | Mitsubishi WS-65907 65" Rear Projection...

1 Answer

Mitsubishi WS-65907 65 in. Rear Projection Television; No Sound from internal speakers. I don't believe external speaker will work either but I have no way to test. TV was move from one home to another....

first you need the original remote to do this, with the set on use the remote to enter the following (menu) 8,2,7,0 this will bring up the options menu the first thing in this list is "Inital" and should already be highlighted then simply press enter on the remote, this should reset the tv

Dec 22, 2009 | Mitsubishi WS-65907 65" Rear Projection...

1 Answer

Mitsubishi WS-65907 rear projection TV HD goes blue.

I would look at the source for the Hd signal as being the problem--if you are using some kind of cable or sat box it will deliver the signal to the DTV input on the back of the set--this is the HD input for this set.

It is possible to have a problem like you describe be one in the set--but very unlikely----have you looked on that green signal board for any signs of Glycol?

Anything that will produce a 1080 signal to the DTV input should tell you if the problem is the set or the source of the HD signal that is causing the problem.

If you have questions or need advice let me know--I am here to help people.

if this information has helped you rate this solution as i do this here for free.


Dec 05, 2009 | Mitsubishi WS-65907 65" Rear Projection...

1 Answer

My Mitsubishi WS-65907 turns off immediately after you turn it on

Perform the self check that this set should have: when you turn it on and the power light goes off:

On the front of the set press and hold both the MENU and INPUT (OR DEVICE) BUTTONS AT THE SAME TIME FOR AT LEAST 5 SECONDS----then release both buttons.

The power light should blink a two digit error code--for example----------2 blinks, a pause and 2 blinks--this is the most common one and the easy one to know what is wrong.

Let me know what you find and I will tell you what it means.

If this information helped you, rate this solution as I do this here for FREE.


Nov 15, 2009 | Mitsubishi WS-65907 65" Rear Projection...

1 Answer

Mitsubishi ws-65907 tv not turning on

Let's just buy new TV's to help stimulate the economy.........

Dec 14, 2008 | Mitsubishi WS-65907 65" Rear Projection...

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Have a WS-65907 and get a positive 1-2 code (green blinking light)

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Sep 15, 2008 | Mitsubishi WS-65809 65" Rear Projection...

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Mitsubishi ws-65907

can u please give me ur email ID so that i can send u a DOC file having all step by step instructions?

since it is very long i can post it here

Jun 22, 2008 | Mitsubishi WS-65907 65" Rear Projection...

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Mitsubishi ws 65907

do u hear a clicking sound.

this can be due to relays getting tripped

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1 Answer

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