Question about Toshiba TP55F80/81 55" Rear Projection Television

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Tp55f80 tv. to much red on screen

We are having problams with heavy red lines above everything. When we first turn it on its fine for awhile then then start showing up and it makes it very hard to watch. any ideas?

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You have a convergence failure. It may be possible to simply re-solder the pin connections under the convergence output ICs as they have a tendency to develop cold solder joints which cause intermittent mis-convergence. If the solder connections are good, then replacment of the ICs will be necessary. Expect to pay $350-450 to have a toshiba servicer fix this.


Posted on Feb 17, 2009


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Red line on screen above red line screen is distorted below line and it is fine!!

Could be a bad display. If that's the case buy a new TV because the displays are usually more than a new TV itself. God I miss CRT's...

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Ur tv work before it in storage?The storage u put ur tv in,the place is very hot or very cold?U have a good and protections in heavy duty box the tv was in?Take the tv backcover off have an air compressor,have a good cleanning the internal.Tries the tv again.

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The problem is probably that one or both of the STK convergence chips have failed. These control the convergence coils around the red blue and green guns and are the most common cause of sudden convergence problems and the protection circuit shutting the TV down when turned on.

I can post details of how I replaced these on my Toshiba 40WH08B. Yours should be similar.

Mar 02, 2009 | Toshiba TP55F80/81 55" Rear Projection...

1 Answer


hell yeah,
the biggest mistake I did with this tv.all tubes need to be replaced and it burns a hole in ur guarantee on tubes,sony aware of the problem but didnot recall these defective sets.
good luck.

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Feb 02, 2008 | Toshiba TP55F80/81 55" Rear Projection...

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Gun problem

Bill, the picture tells the story, you`ve lost convergence, either the convergence IC`s have failed or theres a slight chance that one of the convergence plugs got partially pulled out when you moved the set, of course the latter would be the easy fix, remove the back of the set and check all the plugs by pushing down on them or of course if you see one laying out of the plug just plug it back in. If the IC`s have failed or possibly the solder is broken on the IC`(s) and you are proficient with a soldering iron you can try re-soldering the pins, be prepared to lay on the floor for awhile there are 18 pins on each IC. check the plugs first (unplug the AC cord first), let me know if you know how to solder & unsolder and we`ll go from there, not much room on here to type in everything in one reply. BMW Rider

Dec 02, 2007 | Toshiba TP55F80/81 55" Rear Projection...

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if you have warrenty, return it. if not, then buya new one...the video fuses are dying...hard to fix it.

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1 Answer

TP55F80/81 55 in

no mater what I say you will need a tech, is note that you dont have experiece with this tv, so let the job to a tech, is better for you...good luck

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