Question about Mitsubishi VS-70707 70" Rear Projection Television

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Mitsubishi big screen tv 70" model vs-7004r

Will not power up. was told it was the main power supply board. Does the hole board need to be replaced and is it costly to get it repaired? is the tv worth that cost?

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  • Sonny Berry
    Sonny Berry May 11, 2010

    Can you verify the model number of your set and I will check as most of those boards have been discontinued by Mitsubishi

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5 Suggested Answers

  • 1694 Answers

SOURCE: Mitsubishi vs-50703

NO POWER===Check all fuse devices on PS PCB. Shorted convergence IC's will cause that== change IC's.See what you have-let me know what you find.

Posted on Oct 04, 2007

Slinteriors
  • 8617 Answers

SOURCE: Trying to find parts for Mitsubishi Big Screen Mdl# VS-7004R

you should be able to locate the parts at the following link just leave them a email with the model number of your set and what your looking for. Just click on the contact us link in the lower left side of the page .
http://servicemanuals.vstore.ca/

Posted on May 24, 2009

  • 126 Answers

SOURCE: no problem==somebody gave me mitsubishi-vs-6043 tv and i need to

When new that unit sold for around $2000 and $3000. But that is an older unit and you'd be lucky to get $500 for it now. It was manufactured in 1996 making it 13 years old.

Posted on Jun 09, 2009

freetek
  • 5568 Answers

SOURCE: DVD signal works in RCA ports. Good cable signal doesn't work

This company tears down a broad variety of TVs so enter your model number there to see if they have one on hand:
Jimmy's Parts
They do warranty their stuff to be operational.


Posted on Oct 21, 2009

  • 1156 Answers

SOURCE: Mitsubishi 60" projecton TV Model VS-60805 has no

You might wish to unplug the TV for an hour or more. If this power reset does not allow the TV to turn on component failure is indicated. These sets are assembled using the wave soldering process they are known for having cold solder connections.

The safety circuitry shuts the TV set down or will keep it from turning on when it detects a problem. This model of TV has over 2,000 parts, which includes millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Resistors will change value and burn. Diodes and IC can go bad.

This may have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again if the parts that caused the failure to begin with are not replaced.

The only way to know for sure which parts that are no longer within factory specs and for a proper repair all the electronics must be diagnosed by someone with the correct electronic test equipment specifically designed for TV service and the skills to use the test equipment. I wish I could tell you there was a quick fix or button to push that would fix the TV but that is not the case or the solution needed to get the TV operating correctly.


Black Screen - Sometimes, the TV may display a black screen, now you need to check the cables whether they are properly plugged or not. Reconnecting all the cables can also work for this problem. Also, if the screen has a screen saver, check how it's set up. And, if nothing works for this issue, then there is a possibility that the lamp, rear projection, or the LCD panel may have been damaged. Now, you need to check your warranty card of your television and se your set comes under the manufacturer's warranty period. Call the customer service for technical problem and get replaced if a part demands it.


It can be overwhelmingly frustrating when an electronic device as expensive as an LCD television set starts having problems. Luckily many of these problems are easily troubleshot. While being able to hear sound coming from your LCD television but seeing no picture may seem serious on the surface, fixing the problem involves checking a few different settings to make sure everything is set properly


Instructions



Check the video connection of any devices plugged into the LCD television. If you can hear sound but are seeing no picture while trying to use something like a DVD player or cable box, the problem is probably that a wire is loose somewhere. Check the yellow video cables running from the DVD player to the TV and make sure everything is plugged in firmly and where it should be. Also check the coaxial cable running from the cable box (or cable outlet) to the television and make sure that wire is also screwed in securely.

Check the image settings on your television and make sure everything is set properly. Certain settings like "Picture" or "Brightness," if set to one extreme, can make the picture appear completely black. This could cause you to simply hear television shows but not be able to see them. Reset all picture settings on the TV to their original factory default settings to see if that fixes the problem.


Try another channel. If you're watching TV and not getting a picture, the first thing you should do is check a variety of random channels to make sure it is a problem with your TV and not with your television signal. If it is a problem with the television signal it is the fault of the TV station or cable service provider and there isn't anything you can do yourself to fix it.


Try the DVD on another DVD player. If you're trying to play a DVD and can't see any images, make sure the disc isn't defective. Try it on another DVD player or a computer DVD drive and make sure the disc works in the first place.

Hope it helped ..

Posted on Jul 07, 2011

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Tv is dim and can't brighten


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board...

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Need help with a mitsubishi big screen tv. model #- VS-45605. It needs a replacement screen and has vertical hold issues.


You will have to search for a TV repair shop, and see if they have another 45" Mitsubishi TV of the same model, or close. You may be able to get a replacement screen from salvage. As for the vertical hold, in some cases you may believe the vertical IC is at fault (we will come back to this), may be not. The first suspicion is in the signal board. The signal board is the board with all the RCA jacks and RF connections. Pull this board out and replace Capacitor (location C2V29) this is a 16 volt 22Mf capacitor. Also replace C2P05 which is a 16 volt 100 Mf cap. This will correct your vertical problem. If you can find an ESR meter, I would certainly check all the capacitors in the signal board. You will find several weak capacitors to replace. The two already mentioned are extremely weak or bad. As for the other board (power supply) you may have to resolder the pins on the vertical IC. It will be located on the corner of the board. I do not remember the location. It is mounted on a heat sink, the vertical IC will have a number such as LA78XX. (LA7838, not sure). Resolder the pins on this IC and check the capacitors in and near this IC. I have not received much problems with this power supply. As always, inspect both boards for bad solder grounds and resolder as necessary! Thanks for asking and show all hands of support!

May 29, 2011 | Mitsubishi The Big Easy TV

1 Answer

I have the Mitsubishi Big Screen TV Model number VS-55707. When I turn on the power the light flashes 3 times and will not turn on. It was working great then just stopped. I assume that 3 blinks on the...


Hello,

Your power supply board is not yet dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.


I hope this will help in solving the problem....

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1 Answer

I was told i need a deflection board for a vs-70707, would it be the terminal board or the main board assembly?


This board are no longer in the market.Try website like Tvrepairworld.com might have a rebuild one.It part main board parts of the power unit.

Sep 03, 2010 | Mitsubishi VS-70707 70" Rear Projection...

1 Answer

Try to turn on shuts down right a way ws_65809 7yrs old


You may just need to replace a few components in your tv or there mmight be something loose. First part of the TV that usually shows up with a problem is the power supply. Check the power supply for loose soldering or leaking capacitor. If there are none on those circuit make your way up to the main board and have it checked.

Aug 08, 2009 | Mitsubishi VS-60707 60" Rear Projection...

1 Answer

Trying to find parts for Mitsubishi Big Screen Mdl# VS-7004R


you should be able to locate the parts at the following link just leave them a email with the model number of your set and what your looking for. Just click on the contact us link in the lower left side of the page .
http://servicemanuals.vstore.ca/

May 24, 2009 | Mitsubishi VS-70707 70" Rear Projection...

1 Answer

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Sounds like what happened to my hitachi. Power voltage regulator on the main pwr board.

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