Question about Mitsubishi VS-60805 60" Rear Projection Television

26 Answers

Green was working than it went out and one day it came back and worked for about a month and went back out and have not come back. What are some possible problems?

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  • 10 more comments 
  • sticks40 Dec 02, 2008

    I only have a Red, Blue, and Green Tubes.

  • sticks40 Dec 02, 2008

    If I turn the Green screen knob under the screen it will glow with lines on the screen in green.

  • sticks40 Dec 02, 2008

    I do not have a yellow tube.

  • sticks40 Dec 04, 2008

    the green crt is good

  • sticks40 Dec 10, 2008

    I tried cleaning did not work

  • sticks40 Dec 10, 2008

    the green tube is good

  • sticks40 Dec 12, 2008

    The green came on and worked for 6 hours

  • sticks40 Dec 12, 2008

    I know it has something to do with the PCB-RGB because when I switch the wires for red and green coming off the RGB board to the CRT board the green starts working and the red stops working. i can make the problem move from one CRT to another but I do not know for sure if it is the PCB-RGB board or the wiring from the PCB-RGB to the PCB-CRT.

  • sticks40 Dec 13, 2008

    Where can I buy a PCB-RGB board?

  • sticks40 Dec 17, 2008

    I am having a hard time find the RGB board.

  • sticks40 Dec 18, 2008

    http://www.mitsuparts.com/ do not carry the part.

  • sticks40 Dec 22, 2008

    Your solution was very helpful, the green transistor was dirty.

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26 Answers

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First check the power supply source of Your television. If it is OK then you will have to take your television to a qualified technician. Please don't try to service internal parts of your television. Since on one side you may loose out of warranty/Guarantee, additionally you may spoil it more than doing any good to it. There is always a risk of fatal electric shock. Please pay the money if you are satisfied with my answer. If not please get back, I'll be very happy to help you.

Posted on Dec 20, 2008

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  • 395 Answers

Might need a new new convergence amp or convergence generator

Posted on Dec 18, 2008

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Another expert checked, replacement boards for the Mitsubishi V16 chassis NLA (no longer available). can you try component level repair?

i was made to understand that it will be better if you have service manual. does the RGB PCB board have Q2A23 transistor markings? If yes can you do out of circuit testing. normally would be 2 more similar parts. also check connection of GK connector (Signal board to RGB PCB), also RH, TH and others.

hope this helps.

Posted on Dec 18, 2008

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Problem seems in CRT Connector of green tube or green RGB board.
I have suggestion, pull out green CRT board and spray WD-40 contact cleaner in holes of CRT Connector mounted on board and leave it for few hours.. then replug it with green CRT and try.

Posted on Dec 17, 2008

  • Shahid Electronics
    Shahid Electronics Dec 20, 2008

    Let me know did you performed cleaning of CRT base connector as suggested. Any feedback will be appreciated and will help me to check further.

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  • 275 Answers

Go to this site: http://www.mitsuparts.com/ to find the part you need

Posted on Dec 17, 2008

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You need at least 1 color gun, I went thru a similar problem with a Sony. The problem is that unless you have the proper tools, installing a gun depending on the model, is from very difficult to impossible for the average person, and you could get really hurt badly because of the extremely high voltage, Let a pro do it. Mine cost more for the company to fix that it was worth, unless you have an extended waurantee, it may be not worth your wile to fix it, mine cost almost twice to fix as it cost new. Iwas fortunate because it was under an extended coverage, Also it was gone for 6 months. Unfortunatlly we live in a disposible society, and before you spend a few hundred (at least), you may be better off putting that twords a new tv. Peace, Gym

Posted on Dec 17, 2008

  • George Bill
    George Bill Dec 18, 2008

    It sounds like the gun was on the edge of going and finally went out. I believe in fixing anything that is fixable, but with these tv's, they have special tools and meters to measure the various voltages and sync those color guns. I know that the repair company that fixed mine spent several days untill they got it right.And they had the tools. As I mentioned you need to be careful because even unplugged the capacitors store high voltage, and you could get a real bad shock. Please at least call a few local tv repair guys and ask them what they think it is, I find that most folks will tell you if it's what you think or something else mine was still quite watchable and I thought it was just an adjustment, until the warranty people tested it and told me they had to replace both guns.

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Hi,
you can order it for mitsubishi 1-800-553-7278

Posted on Dec 15, 2008

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5998.iso-parts.com/nsn/5998-99-687-1727 - 32k

Posted on Dec 14, 2008

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May be the circuit board is damaged or may have some loose connections.try to check it .thank you

Posted on Dec 14, 2008

  • JITHIN ANTONY Dec 17, 2008

    i think a capacitor is damaged .try to check it

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You probably have bad connections on the green crt board. You can determine this by removing the front speaker grille. Behind the grille, you will see a panel held on by philips head screws. Remove the screws and the panel and you will see the crt boards. The one in thre middle is the green. Now here is where you have to be careful because the tv needs to be ON and operating to do this test. Take something non-metallic (I have plastic screw drivers) and lightly tap on the crt board as well as the skinny glas neck of the crt. Tap LIGHTLY so as not to break the neck of the crt. Sometimes it is a matter of removing and reconnecting the crt board which fixes the problem

Posted on Dec 13, 2008

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  • Mitsubishi Master
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When this happen, the fault is often due to the small board (sometimes called ballast) that powers the CRT. In your case it is the board that powers the green CRT.

It is also possible that you have a faulty CRT board.

The experiment you did replacing the connection on RGB board, lets think this is a defective RGB board.

This kind of experiments, like swapping contacts without following indications on service manual , can cause further damage to the tv.

To test the board follow thoroughly the indication on service manual.



Posted on Dec 12, 2008

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This sounds like a capaciter problem !and they may need replaced in the green lens (if this were a lens problem it would have not came back on! (Good news for you!

Posted on Dec 12, 2008

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  • 479 Answers

Its not the wiring .its the board

Posted on Dec 12, 2008

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Oh, maybe it is a problem with the capacitator. The projector may be having the 'swollen capacitator' problem. Call up and authorised doctor and have it checked personally.

It may require the change of all the stuff inside. If you have the warranty and you haven't done anything wrong yourself, you can get it replaced free of cost from Mitsubishi.

If the capacitators are swollen even a bit, you should change them immediately to avoid any further damage.

Also, it may be a result of loose connections in the RGB picture section. It may even be a problem with the service provider ;)).

Posted on Dec 12, 2008

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  • Mitsubishi Master
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Poor/bad solder connections .

Posted on Dec 10, 2008

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  • ladywinn
    ladywinn Dec 12, 2008

    It is very well possiable that the green tube, did short out, but to make sure this is whats wrong remove back see if all 3 tubes light up if only red and blue light up and not the green , Disconnected CRT board on green tube it could be the crt board.Look for bad componts on board,or just replace the crt board.

  • ladywinn
    ladywinn Dec 12, 2008

    I have new comment on your TV.

  • ladywinn
    ladywinn Dec 17, 2008

    WOW, I,ve never seen so many replys to a question ,YOUR CRT board to the Green Tube is bad .And This is a FIXYA reply.

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The green tube is shot and needs replaced

Posted on Dec 05, 2008

  • Ronnie Houston Dec 15, 2008

    your green tube is burnt out

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Hi,
    As if the situation you told about, It look that this is due to carbon on the beam.Therefore,Two methods could be apply.First check C board and you will find there a small component having board mark
->I<-  written as "G" which is called GAP and if you see this two legs part it has a slight gap in the mid. Take a cloth or paperand clean it to clear dust or durt from it.Hopefully this will work.
Try it and reply me.
Thanks 

Posted on Dec 04, 2008

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Hi, please dont rate me if this could not fix your problem. Need to replace its tv lamp. Thank you.

Posted on Dec 04, 2008

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Its the green lamp inside the unit which has blown, you can usually replace these because the have a short shelf life, refer to your manual on how to replace it

kind regards

Posted on Dec 04, 2008

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Hi and welcome to FixYa,

Your query "What are some possible problems?", offhand possibilities are:

  • the small PCB at the rear of the lamp (most likely);
  • the lamp itself (likely);
  • power to the PCB coming from the secondary of the FBT (least likely).
This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Dec 02, 2008

  • 2 more comments 
  • Louie  Role
    Louie Role Dec 04, 2008

    Hi again,



    Any updates or developments so far?





  • Louie  Role
    Louie Role Dec 04, 2008

    Just a thought, is the Mitsubishi using component video signal? If yes, possibly another cause is the green component either form the source side or the input processing board.

  • Louie  Role
    Louie Role Dec 13, 2008

    Hi again,


    • PCB-RGB board - try tapping on the board with an insulated rod. I am tempted to think that it is a cold solder/loose connection;

    • wring from the PCB-RGB to the PCB-CRT - The wiring could be checked/eliminated by a continuity check.

  • Louie  Role
    Louie Role Dec 14, 2008

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Sounds like the ICs need to be replaced. Whoever replaces them needs to know how to solder them back onto the board which requires some electronic experience. they should be STK-xxx where the xxx is a number. Make sure when you open the tv that you avoid all capacitors and touching anything that may still have power running through it. If you have questions while doing this, please let me know

Posted on Dec 02, 2008

  • Benjamin Patri
    Benjamin Patri Dec 04, 2008

    Have you looked into the convergence ICs, these are what you should be replacing. Let me know if you have questions relating to this as I will gladly help.

  • Benjamin Patri
    Benjamin Patri Dec 05, 2008

    Again, have you checked the ICs? These are the most likely culprit. There are two of them that would need to be replaced

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The green color is missing because the green picture tube is not lighting up. There are two possible causes for this:

  • The picture tube is bad and need to be replaced. This can be confirmed by a technician by opening up the TV and checking inside if the filament on that particular CRT is lit.
The other parts which you need to check are flyback transformer and high voltage splitter .

Posted on Dec 02, 2008

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Check the lamp specially the yellow one. It might be blown. Double check any cold solders and other neighboring parts that might be malfunctioning or burned.

Posted on Dec 02, 2008

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  • Mitsubishi Master
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If the green crt was ok it would work, the circuit board that supplies it is defective, it will cost more to fix than TV is worth, the new LCD's are far superior, the prices are low, replace yours.

Posted on Dec 15, 2008

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