Question about Mitsubishi WS-55807 TV

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WS55807 Hi, I am having the same exact problem with my Mitsibishi WS55807 and was wondering if you ever fixed the issue and if so what was the problem. I am reluctant to spend hundreds of dollars to fix this since the set is almost 8 years old, thanks.... ecomparoto@comcast.net

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  • ec3de Oct 02, 2008

    Hi,



    Thanks for the information, I just ordered the fuses and I will buy osme acetone as suggested.One question I have is do I need to solder the fuses into the board do they plug in? Thanks again.

  • ec3de Oct 11, 2008

    Hi,



    I was able to clean the board with acetone as suggetsed and I now have the picture back, I did not replace the fuses as I am still waiting for them to arrive. Even though I have the picture I do not have any sound which started the problem before I loss the picture, any suggestions to help resolve the sound problem ? Thank you for your help, you advice has been great, many thanks again.

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Good Day;

Yes, there is a TRICK of removal of centerboard. Remove back cover, after disconnecting the POWER CORD, remove 2/3 screws from black chassis frame, on back bottom, release wire restraints, look for two clips on front of black chassis. Can see easier if you remove speaker grill and small panel. Remove all golden type screws from PCB. Replace IC’s STK392-570 (2).

More than likely your TV has "COOLANT" (ethylene glycol) on the circuit boards. This fluid comes from the CRT's (picture tube) this fluid is used to keep the CRT's cool, such the name. This fluid from the CRT's leak when TV is on for long periods of time, the chamber expands and the seals leak.

One can remove this fluid by using "acetone" & small brush. The fluid is hard to see, use bright light, they spots can be smaller then a DIME. Also, the fluid can corrode the parts and traces on the boards. To protect the TV in future place heavy plastic or thick cardboard over affective area, make sure TV has proper air flow around TV.

If after the fluid has been removed and TV still does not work, call an Authorized Service Center to come out and repair TV after giving you an Written Estimate. The boards are not available.

Always try resetting the TV by unplugging it for one minute then plug back into A/C outlet and ALWAYS UNPLUG TV BEFORE ATTEMPTING ANY REPAIR ON THE TV.

Good Luck, big IRISH.

Posted on Sep 28, 2008

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