Question about Mitsubishi VS-60703 60" Rear Projection Television

1 Answer

Sound but no picture, menu looks bowed/hourglass screen

Last night it was fine and this morning there is sound but no picture.  the menu comes up but looks like it is displayed on a bowed screen so i have the red, green and blue letters all just off of each other.  then this afternoon it was ok again.

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  • jvaliga1 Jan 29, 2009

    Thank you for the quick response.  How do i know which chips are the convergence chips?  are they marked or do i need to get a schematic for the TV.  If i need a schematic, where do i get one.  I am do not know anything about fixing this but I know someone who can if i let them know what to solder.  Also, am i re-soldering chips or amps, you made reference to both.  Sorry if it is a ridiculous question but like i said, i don't know much about electronics repair.


    Thanks again. 

  • jvaliga1 Feb 05, 2009

    1 more thing i noticed, when i took the front panel off i saw what looked like sticky liquid on the circuit board, after doing some research it looks like a crt cooling leak might be happening.  How difficult is this to fix?  I found coolant online and need to know what to use to seal the tube.  I saw something about RTV sealant, where to i get this?  could this be my problem instead of needing to re-solder convergence chips or is this a separate issue?


    Thanks in advance
    Joe

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This is a common problem on projection sets and if you have someone carefully resolder the pins of the convergence chips, it will probably solve your problem. If you continue to use the set, the amps will fail and leave a dead set condition. What needs to be done is to disconnect the power, remove rear cover, loosen all snug wiring making sure to mark any wires that you disconnect, remove screws holding chassis in and undo plastic hooks at front of chassis, access bottom of circuit boards and with low wattage soldering iron resolder convergence amps, reinstall chassis and rehook all plugs in original places especially ground wires and high voltage leads, and test. If the soldering iron is too powerful it will damage the chips, also, be sure each solder joint is clean and not touching the one next to it or you will fry circuitry. Hope this helps. Russmann.

Posted on Jan 28, 2009

  • Rusty Larmann
    Rusty Larmann Jan 29, 2009

    Glad I could be of some help. The convergence I.C.s or (chips) are stereo amplifiers which in your set perform color alignment duties instead of audio functions. These two I.C. chips are located on the largest metal brackets standing on the circuit board known as "heatsinks". There are locatiion numbers for each component on the circuit board and the location numbers for the convergence I.C.s are IC8D01 and IC8D02. The generic number stamped on the side of the parts is STK392-110. I really do have to suggest having a professional tech. do this repair. Saving a little money may cause you to have to replace the tv if not done properly. Of course, my opinion and help is free..... You're welcome, Russmann.

  • Rusty Larmann
    Rusty Larmann Feb 05, 2009

    Well, that changes everything. Coolant leaking from the tubes can cause anything in the set to fail depending on what it drips on. This is a major repair even for an expert. We use dawn dishwashing liquid and warm water to clean the circuit boards then put it in front of a fan to dry.(Scrub with brush). Resealing the tube can be real tricky, especially if the expansion chamber is what burst to cause the leakage. If this is the case and the rubber expansion baloon has busted, silicon rubber will do you no good. Only if the seal around the face of the tube has failed is silicone sealant going to help. Look very closely with good lighting for the leak before spending more money on it and check on the board for corrosion or burnt components. It's probably time to call a local pro on that brand and ask for their advice.Good luck, Russmann.

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2 Answers

Looks 3d,bows in the middle


You must replace conversion IC's (2)
Part number: STK 392-xxx
Also check resitors in circuit for>>open
easy repair!

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I have a HCN4727w samsung. Red/green shadowing. Bowed image


Projection sets have two very common problems.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

KP-57HW40 rear projection TV colors out of alignment and warped


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony,Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

I had to unplug my cable/tv last night and when I turned it on this morning I could not get the menu to display the cable accept on the menu screen. I went in to turn off the home theater and the cable...


Push the menu button and enter 1370 and push enter and the tv picture will appear on the screen. If it does not push the input button until the picture appears.

Jul 28, 2009 | Projection Televisions

1 Answer

Picture is blurred and bowed


ok you have a convergence problem. first check out the article the fl231 problem in the tips and tricks section it will tell you of a condition that might mean an easy repair. first check to see if you have the convergence options in the customer setup menu

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If you are familiar with TV repair, have electronics basic knowledge, good soldering skills and tools then check dry (cold) soldering joints at D board of this TV. Resold all lose connections there and check picture.
Still no joy then you need to replace D board.

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1 Answer

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Ur convergence it dead.Buy a convergence kit,replaced what in that kit.Know how to solders right?Buy a convergence kit in these websites Tv repair World.com,Tv rpair Kits.

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1 Answer

Picture(Color Convergence)


Go to menu look for convergence on menu if it is not on menu then you have a open fuse located next to Flyback Transfomer on deflection board.

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1 Answer

Picture quality


Does the unit have a flash or auto focus function? Check your menu. Some of the newer projection TV's have a auto focus function that may correct the problem.

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