Question about Mitsubishi WT-46809 46" Rear Projection Television

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Convergence way out when first on-30 sec or so-then allok. is there something like a de-gausing circuitry that is'nt turning off timely maybe?

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Check this out http://www.fixya.com/support/t117432-rainbow_top_bottom_screen

My problem was imtermittent but radom, but maybe a start.

Posted on Aug 01, 2008

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Got new STK392-040 chips and picture is still distorted. Manual convergence still won't alligne all colors.


the 183 is entry into the tech menu===you need to test all the low value resistors around the convergence chips(only 6 or 8) and they will read low and a resistor with NO reading may be your problem.

Also these sets use a pico fuse going to each chip--either right with it or back at the source----know what a pico fuse looks like"

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The picture has a rainbow on the top and the bottom of the picture.somebody said it was the convergence chips.If I know how to sotter is this something I can fix myself?I also can't seem to locate the...


I think that it hads been magnetised and needs de-gausing. There is, as best to my knowledge, no chip that does this.
What can happen, is a loudspeaker passes very close to the unit an upsets the magnetic field, as indeed a thunder storm can do.
I would get a service agent out to demagnetize it before you go any further

Oct 16, 2010 | Mitsubishi WS-65807 65" Rear Projection...

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Yellow tint on right side of screen sony wega kdf-wf655


Tube got magnetised.
Re orient the TV in a different direction entirely opposite. Switch on TV, Switch Off. wait for 30 minutes. Again Switch on. Repeat at this interval. The auto de-gausing circuit will de-magnetise it.

Otherwise you have to degause it externally. Contact service center.

Apr 27, 2010 | Insignia NS-27RTV 27" TV

1 Answer

I have a 46 inch panasonic cinenimavision hdtv, i replaced the convergence chips and now the tv will run for about 30 minutes and it will turn off. I unplug it and it and plug it right back in and it turns...


You still have the fault that is causing the failure of the converganvce chips, I would look for a Higher than optimal dirty power Voltage rail, or something causing excessive current draw in the drive circuitry, OR check out the Switchmode PSU, Voltage levels and AC ripple,"Cleanlinesss" they are swines of things. GL

Jan 24, 2010 | Televison & Video

1 Answer

Turns off after 30 seconds


i think the convergence amps are weak, or the akb circut has caused the tubes to go bad, google your model number to see if it is in the tube problem. sony made some projos w/ bad tubes in them. tv lasts only three or four years,no cause i had one

Jul 10, 2009 | Sony KP-65WS500 65" Rear Projection...

2 Answers

Degassed tube how to fix? repair?


Do you mean de-purged tube or de-gause tube? Image intensifiers are not like CRT where they have a gausing problem. If a spot is burnt into the image intensifier, it unfortuantely is permanent.

If you mean de-purged (gasless), this can be done by a reputable service/repair workshop with nitrogen.

Aug 12, 2008 | Tasco NV200 Monocular

1 Answer

Toshiba 40H80 - Turns on . . . wigs out for about 30-seconds . . . shuts off.


A convergence problem is very commond. In most cases the convergence output amplifer IC's need to be replaced. This is not something you should do. Call a repair shop.

Apr 15, 2008 | Toshiba 40H80 40" Rear Projection...

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