Question about Mitsubishi WS-65809 65" Rear Projection Television

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Red band flashing intermittenly

We have a WS-65609 and have recently developed a problem. A red band flashes up and down the screen, speeds up to a total red flash and then dissipates.  All of the other colors are still there and you can still see the picture while the red show is happening.  It does not happen constantly, it happens randomly.

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Re: Red band flashing intermittenly

Check your set for coolant leakage. This can cause all sorts of random erratic behavior, and has been found to be very prevalent in Mit HDreadys.

Take care of it now, before any boards in there get ruined. The 4 layer signal board is no longer available on your unit.

Mr Bob

Posted on Feb 04, 2008

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How do I know what parts to get to fix it

Have you replaced the lamp recently? they can fail if they are on when the storm happens? Please post your model # for more info.

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I have a toshiba 61h70. the tv had been shutting down after and few minutes and the red bulb was flashing also. I replaced the IC Chips and it resolved the flashing and shutting down issue. the green and...

You need to look with a meter at the resistors around the chips, they are usually gray in color with bands that denote value--a good guess is one or more were taken out by the chips--in these sets they will look fine---typical is 1.8 ohm (brown, gray, black bands).

At least one is open (bad--no reading across--like checking a fuse) and there will be several with identical color bands on them.

Let me know if I can help.

If this told you something you did not know, rate this solution as very helpful as I do this here for free.


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My tv doesn't show red

base on ur description u may have a bad red picture tube ,

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The toshiba 46h83 46in rear projection tv comes

the red flash you are talking about im assuming is the screen going red
that usualy means a red picture tube they break down
one way to tell turn the red screen control counter clockwise and see if you can control the tube gain
and then you can lightly tap on crt neck and i do mean carfuly and see if it flashes it most likely will and you would need to change the crt and reset it up

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tube, pull the front grill off and gently tap on the neck of the red crt see if it momentarily comes back.

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No red in the image on the screen

The adjsutment that you turned down was the G2 voltage to the red tube which is just a temporary fix for a CRT which has a short developing in it. Try turning up the red adjustment again only slightly to see if the red CRT ( tube) will light up
if it does and then the set shuts down its most likely the red CRT which is bad . If it lights up but you get retrace lines but doesnt shut down it possible that its the CR board ( Red CRT Drive Board) which is at the very bottom of the red tube.

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Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.

For example, 3 flashes, then 7 flashes = 37.

Here are the error codes, and the corresponding problem:

12 = No error detected, check power supply.
32 = Lamp Cover is open.
33 = Air filter cover is open.
34 = Lamp abnormality
36 = Light Engine (DMD or Lamp Fan stopped)
37 = Exhaust or Lamp Ballast Fan stopped
38 = Lamp Temperature High
39 = DMD Temperature High
41 = Short is detected
44 = DVI cable between FMT and Engine disconnected

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Sony 57 in Rear Projection TV

If the picture is playing fine and you notice that the background is getting more and more red, until it is too red and the set shuts down, it could be that the red screen control is set just a bit too high. If this is the case, you can probably correct this yourself. If you are watching a perfect picture and then it suddenly flashes a very bright red, with thin red lines in the pictureand then shuts down, it usually means that the red picture tube has developed a short in it, between the cathode and heater. A good tech might be able to remove the short by arcing, but if the short persists then the red tube will have to be replaced. Either way, this is something that should only be done by a qualified tech.

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