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No Power in Mitsubishi VS-55705

Hi!! There's something wrong with my big screen tv. After a few weeks without using it ( i was abroad), everytime a press the power button a small green lcd bulb turns on (as normal)as if the tv is turning on as it should, but one second later it turns off again. This happens in no time for the screen to turn on. All i hear is a "click on" sound and later, a "click off" sound. This happens every time i press the power button. Could this be the capacitors? What solutions do you recommend me? Thanks in advance... John

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Re: No Power in Mitsubishi VS-55705

Hi John This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. MAY BE INTERMITTENT, SELF-DIAGNOSIS ERROR 23 OR 24. CHECK SOLDER CONNECTIONS AT CONNECTOR "DY" ON THE YOKES. 2. SHUTDOWN AT POWER WITH SELF-DIAGNOSIS ERROR 23 OR 24. CHECK C411 2200 UFD 35 V AND C412 10 UFD 50 V, BOTH LOCATED ON THE MAIN PCB

Posted on Sep 11, 2007

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Re: No Power in Mitsubishi VS-55705

My 48315 just quit while I was watching it. I let it set off for about 15 mins. and tried it again and it came back on.

Posted on Jul 18, 2010

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Mitsubishi VS-55705 error code 12

"12" is no error, no problem. Also, if you unplug TV power, you lose all errors in memory.

Apr 26, 2014 | Mitsubishi VS-55705 55" Rear Projection...

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THIS is a 1999 model VZ7 chassis and it uses two of the STK-392-110 CHIPS FOR CONVERGENCE.

If picture looks 3d or bowed with colors out of place or around letters etc, the chips need to be replaced.

I will attach photo of what the chips look like--one used here is the most popular one and used in many brands of sets.

Total parts cost for a pair will be under 20 dollars and repair takes about a hour.

If the picture or information I have provided told you something you did not know rate this solution as very helpful as I do this here for free.




This is from a Hitachi but your set uses the same two black chips.

Aug 22, 2010 | Mitsubishi VS-55705 55" Rear Projection...

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S.O.S anyone out there

Projection TV sets have several common problems listed below.

Problem #1) Convergence


  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
Problem #2 CRT Fluid has clouded over.


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:

You can see more examples and find a fix here...


Sep 03, 2008 | Mitsubishi VS-55705 55" Rear Projection...

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Mitsubishi vs-55705

Well the "B" is the B tuner make sure you have the cable on the "B" input on the back of the set. If so, does the "A" work? If the A works then you can just use it and you probably have a bad tuner in the TV but you have 2 in this set. If niether work you've got problems. You might check the Home theater settings in the menu under A/V reciever. Mitsubishi used to lock the inputs to a certain input or channel for use with a monitor out on a reciever. If none of this helps better get a pro to look. Good Luck

Apr 04, 2008 | Mitsubishi VS-55705 55" Rear Projection...

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Mitsubishi tv

Could be a power supply problem - sounds like the feeder cap was failing slowly until the heat stress on the regulator finally gave out.. You'll want to check the following: Strm6515A (That's the regulator, R9a23 1.2 ohm, C9a15 220uf/35v , R9a0 1k all in that feed circuit for the regulator.

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Mitsubushi Big Screen TV Screen Protector vs 60601

that will have to be a dealer orderd item.. Unless you can find one used. I would try the tv shops in your area , they may have a used mitsubishi screen

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depending on the model it could be serveral things. it could be convergence ic's gone bad or a problem with the power supply, something is shuting it down . contact mitsubishi for your nearest sevicer

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Black horizontal lines appear after tv is on for 30 minutes


I had the same problem with our VS-55705 Mitsubishi. It seemed to me that this was a problem of heat.

I unplugged the TV and then took the cover off of the back of the it. I then used canned air to blow off the collection of dust from the components. Then I vacuumed as close to everything as I could without touching any of the components. I then used glass cleaner to clean up the surface of the three bulbs.

I plugged in the TV and it has worked perfect ever since. I haven't put the rear cover back on it yet. That could have been all that I needed to do to fix it. I'm too busy enjoying a nice picture to try putting it back on. Cleaning the bulbs really helped the quality of the picture.

Good Luck!

Oct 11, 2007 | Mitsubishi VS-55705 55" Rear Projection...

1 Answer


Sounds like its going into auto protect shutdown. Try holding the imputand menu bottons in together for 5 seconds and see if the green light blinks out a series of blinks. If so notice what they are, should be a 2 digit code if its going into shut down. If not its a power supply issue. Also you can look the boards over for evidence of CRT fluid leaking on the boards, I have seen this happen alot to the VS models it causes corrosion of the components and you will experience no start up condition like the one your describing.

Oct 04, 2007 | Mitsubishi VS-55705 55" Rear Projection...

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