Question about Mitsubishi WS-55907 55" Rear Projection Television

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Blown fuse I have a blown pico 125v 5a fuse, can I replace it with a different type of fuse?

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Re: Blown fuse - Mitsubishi WS-55907 55" Rear Projection Television Projection Televisions

What was the orginal problem?

Posted on Nov 25, 2007

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Pioneer sd-643hd5 fuse issue

The fuses may not be your problem--I have fixed several of these---The large power board is on the right side as you look from the back?

Lots of these sets develop bad solder connections on that board--several sites on the internet offer to have you remove and send them the board to resolder--this set used lead free solder and after some years has problems--a few I have opened had clearly broken solder joints--I usually in this case remove the board(mark all the many plugs and make a diagram) and solder almost all of it by hand----usually fixes this kind of trouble.

I do this here for free so if this information was helpful give me a vote here....I am here to help people.

If you have any questions or need advice reply to this posting here.


Sep 12, 2009 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Mitsubishi WT-46809 Powers Off; Code 2-2

The 2 fuses you mentioned are associated with the convergence IC. If they are open then the convergence IC is either bad or you have a "cold" solder joint on the IC.

Feb 01, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer


Not sure.....Check e994 - its a pico fuse on the main board....If its blown the kit will most likely help. If its not blown the problem is elsewhere. 

Nov 05, 2008 | Hitachi 60V500 60" Rear Projection...

1 Answer

Diagnosis 23

Protection cutting in can be caused by many different things, at least half a dozen.

Most of the time on a Mit, this is caused by the conv sys blowing a fuse that operates it, which is the same power supply that keeps the unit on. When that fuse blows, the voltage from the power supply that keeps the set on disappears.

The 5A fuses that keep the plus and minus 24v rails going are little green things that look like resistors, but are actually "IC protectors". They can be replaced by regular 5A fast blow fuses, GMA type (also known as F type - small, and hopefully pigtail, for soldering to the bad fuses. Parallell one or both of them onto the blown little green things after testing each with a VOM, which can be done easily in circuit while the unit is unplugged.

If either of those 5A fuses are blown, chances are you'll need to replace their conv ICs as well.

Mit's will work with their conv ICs disco'd - you'll have no conv correction, but the set will work and you'll see an uncorrected picture. At that point it's a shoe-in that the conv ICs are bad and need to be replaced.

Mr Bob

Jun 13, 2008 | Mitsubishi VS-50607 50" Rear Projection...

1 Answer

PRO-520HD Tv will not stay on

you may have short in convergence circuit but this is a job for experienced tech after replacing ic's need to get in to settings and and is kind of complicated

Mar 18, 2008 | Pioneer PRO-520HD 53" Rear Projection...

1 Answer

Indentifying fuse type on tac0151 chassis

Are just regular fuses 5A/125V. You can replace them with anytype 5A fuses.

Jan 05, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

Toshiba 50H81 TAC0151 Blowing Fuses, I Need schematic

Well without the schematic, knowing Toshiba they have alot of convergence problems, so see if the fuse blown in the convergence area, if you you may have to replace convergence amps. These are the big STK's. Most of the time there was a color problem with set before going out. If no problem with this on your set then look in the HV area Hor. and Ver. area. Hope this helps!

Sep 09, 2007 | Toshiba 50H81 50" Rear Projection...

2 Answers

Flashing LED on front panel

The place is call ,you can get it download or a paper copy,for this set I dont know the price but it will give it to you when you put the model number.Check for shorted horizontal output and loose conections,sometimes intermitant conection damage this transistor.Be careful

Oct 04, 2006 | Toshiba 57H81 57" Rear Projection...

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