Question about Mitsubishi VS-50705 50" Rear Projection Television

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Misubishi VS-50705 50INCH

My Mitsibushi VS 50705 which turns the power button on for 1 second and then off. Can you help me with this please. I'm un-employed and I'd like to be able to fix it myself if possible. I did unplug it for a few minutes to see if it would reset and that didn't work.

bvr

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  • antoonv May 16, 2008

    I checked your recommended web sitehttp://servicemanuals.vstore.ca/ and they don't carry the manual for the Mitsubishi model VS-50705. Now what?

  • Anonymous May 25, 2008

    I too am having the same problem. I got the TV for free and it worked great for 6 months. It shuts off right after I turn it on. Sometimes if I do this three times or so, it will stay on for a few minutes and the picture and sound is great!

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  • Mitsubishi Master
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You would need the service manual to even begin to repair it yourself as it could be literally 50 different reasons why it isnt powering up. I would suggest getting a service manual at the following link , as they will email the manual to you after purchase and then they will provide free tech support to help you diagnose the actual problem , but its a hopeless cause without the service manual. Heres the link.
http://servicemanuals.vstore.ca/

Posted on May 16, 2008

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2 Answers

Mitsubishi VS-50705, 50 inch Rear projection TV won't turn on!


1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try plugging in the TV through the USB on its panel to a computer or USB charger, and it may work. However, this is only a temporary solution.

3. Not using the TV in a while may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key.

4. Some TV's require an input signal (from cable/VCR/DVD/CD, etc) to enable them to power on. Try connecting a cable line or DVD to the TV and see if this helps.

5. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.

6. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic (not same model):
97ff1dc.jpg
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.

REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

May 16, 2008 | Mitsubishi VS-50705 50" Rear Projection...

2 Answers

Mitsubishi VS-50707 50 in....


of course..you might want to remove the back panel, and see if all the connections are still secure..

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1 Answer

When I turn the tv on, either manually or by remote, the power stays on for just seconds then shuts itself off.


hello my is rico, check your lamp, lamp cover, fans. second power on the tv when it shuts off itself hold buttons menu and input or device, it will start blinking , it will blink 1 or 2 and then its gone pause for a second andthen will start blinking again count the blinks like, 2,3 -2,2 it means code 23 or 22 and then needs call misubishi for the codes means. if you need more feel free to call at 602-810-7149 at anytime i live in mesa az

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I have a Mitsubishi VS-A50, I turn the power on and the green light comes on for a second then it turns off automatically and the picture and sound never comes on.


Good Day; 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 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. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 PART # 283P044020 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. IC8C01 and 02> 267P141030 HIC; STK392-110. These parts are the most common part to fail in this model. If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
Please Note: If you can not rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed.
If you need further assistance please comment to this post and I will try to help you further.
Good Luck, Big Irish.

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1 Answer

My misubishi


Good day, fidel509; 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 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) Good luck, I hope this will get you started in the right direction, big IRISH.

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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.

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