Mitsubishi WS-55807 TV Logo

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Tra Bonn Posted on Feb 17, 2007
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Mitsu 55'' screen

Recently, when turning on my 6 year old WS-55807, the horizontal edges of the picture have begun to bow inward from the middle about 4 inches. Coloration is fuzzy throughout the screen. The condition clears itself - usually within 10 minutes of so, but I know it is a sign of a permanent condition to come. Is there anything I can do myself to fix this issue and avoid the inevitable?

  • KDL1 Jan 11, 2008

    I have the same problem as described here, same model TV. It is very intermittent and it will clear itself, but I know it is preparing itself to probably have a permanent condition. Was this issue resolved by owner or by a service call? I am willing to fix it myself if it is fairly straight forward, but if complicated I'll consider a service call depending on the cost of repair.

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  • Expert 192 Answers
  • Posted on Feb 18, 2007
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The convergence ICs probably have a cracked solder joint on the foil side of the circuit board. Re-flowing the the solder would help. I will always replace the convergence ICs when doing this job. The labor remains the same and you will have to pay a few extra bucks for the parts. To fix this yourself, you will need to be able to identify the two convergence ICs (STK392-570), have a basic knowledge of electronics and be able to use a soldering iron.

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It sounds like your TV is experiencing a CONVERGENCE CIRCUIT failure. YES, it is worth repairing, it's a great TV. The cost will be from $450.00 to $650.00; call an Authorized Service Center and have them give you an estimate B4 repair. Good luck, big IRISH. PS: It's Not An Easy repair to do your self.
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This mis probably a cold solder connection in the horizontal circuitry called the pincussion. Theres a couple of coils and resistors that overheat from time to time and the solder connections get loose. Not really for a handiman has this tv has hi vboltage inside even when turned off. Shouldnt cost an arm ans a leg to fix if the repair shop knows what they Are doing. Good Luck
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