Question about Mitsubishi VS-50607 50" Rear Projection Television

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Blown fuse the 5 amp fuse next to the power cord plug blows instantly as soon as I plug it in.

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Re: blown fuse

Sounds like a problem in the transformer (a short) possibly visible as surface burn marks on the transformer coils. This can sometimes be fixed, but is not usually worth it for a small transformer, but easily replaced. Also check that there is not a short where the power cord connects to the workings of the tv, maybe a loose connection or some debris. Hope this helps :)

Posted on Mar 18, 2007

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Fuse blows when plugged in

I assume it's the fuse in the TV that blows. You more than likely have a bad or shorted low voltage power supply. Probably not worth fixing with the cost of parts & labor.

Oct 06, 2012 | Projection Televisions

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How many amps is the fuse that is located on the back of the TV near the power cord. It says T5AL/125 or 250 v. f800

Something else is going on to cause the fuse to keep blowing. Sounds like you have an issue on your power supply in the unit. Also check the outlet that your plugging it in to. Good luck!

Jun 28, 2012 | Zenith E44W46LCD 44" Rear Projection...

1 Answer

I had a power outage and now the tv will not power on. This is for a 55" Mitsubishi WS-55511. no green blinking lights.


You may have a blown fuse. Unplug the TV and remove the back. Look for a small fuse near where the power cord goes in.
If it is blown that may be the problem.
Use a magnifying glass to read the AMP rating.
replace the fuse and plug it in. If the fuse blows again you need expert repair services.

If the fuse doesn't blow then try to turn it on.
If it turns on then check the operation of the TV.

If the fuse blows again or the TV won't work correctly then you need expert repair service to fix your TV.

You may be able to have your household insurance pay if it is damaged by lightening or a power surge.


May 02, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Hitachi 50GX30B 50 in. Rear won't turn on since electricity went off & on

I have worked on several of this model for power surge damage. Usually what I find is a blown fuse, a shorted regulator i.c. and possibly a blown bridge rectifier(diode array). On rare occasions you can solve this problem by replacing only the fuse, but if the fuse blows when you plug the set in, you will more than likely find above mentioned parts have failed. The best thing to do is to call a repairman but if you have an ohm meter you can test it yourself:1.Unplug set and remove rear cover.2.Get spotlight and look closely at where power cord connects to circuit board.Small glass fuse will appear black if open usually.Otherwise,test for continuity, or just replace it.3.After replacing fuse plug power cord back in while looking at fuse.If you see an instant flash, fuse blew again meaning you will need to obtain parts in power supply and solder work will be required. That is probably as far as I can take this other than saying that you might first want to look at underside of circuit board to determine if major surge damage has occurred. If it has you will immediately know because it will have burn marks all around a/c power supply. I hope this helps, Russmann.

Apr 28, 2009 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

No power to tv

The power management and protection circuits have taken over. There is something taking too much current and the protection system has shut the system OFF to prevent further damage ...............if you are familiar with tv service you can check the main fuse that should be close to where the power cord comes in,if you find the fuse blown it needs to be replaced with an exact replacement for AMPS rating and VOLTS rating as well as size,if the fuse is blown black we might have more problems ahead in the circuit and it will blow up again as soon as you plug the tv back in,if it blows again it will need a more involved repair,the problem could be in the primary side of the power supply.......Check horizontal output transistor.............

Feb 04, 2009 | RCA HD52W59 HDTV Projection Television

3 Answers

Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852

Solved by resoldering some solder joints!!!!!!!
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

Jan 04, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

No power.its plugged into the outlet and it works. red power buttom not on tv

HELLO. it sounds like it could be a couple of things why your set will not come on. 1. you could have a blown fuse.on the chassis. 2. you could have a bad power supplly transformer. 3. you could have a bad horizontal output transistor and a bad fly back transformer. it could be one of them or both of them as well as a blown fuse. because the fuse is blown from the horizontal output transistor burning out or the fly back transformer burning up. check and see if you have a burnt fuse, the size iof the fuse will be 5 amp to 6.3 amp fuse on the chassis right inside where the 110 ac cord comes in and hooks to the chassis. the fuse should be right there, look for it. hope this helps you"GOOD LUCK"

Aug 09, 2008 | Projection Televisions

1 Answer

Tv Fuse Blown

Depends on how hard the fuse blew. If softly, perhaps 1 amp diff is too much.

If hard - blackened inside - then you need to call in a tech.

Mr Bob

Dec 22, 2007 | Pioneer SD-P55A3-K 55" Rear Projection...

2 Answers

Instantly blows the 5 amp fuse next to the power cord plug.

You have a short in the power supply. Look at the regulator and or rectifier diodes. These are all on th primary side of the SMPS (switched mode power supply) the secondary side if shorted shouldn't cause a blown fuse at all.

Mar 18, 2007 | Mitsubishi VS-50607 50" Rear Projection...

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