Question about Mitsubishi WS-55807 TV

2 Answers

Mitsubishi tries to come on

I have a mitsubishi ws55807. I can turn it on and I can hear the high voltage crackle and the tubes filaments are lit, but that is all I get. No sound or video. All the power supply voltages are ok. What could it be

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  • widgemix2003 Jul 30, 2008

    The power light stays on.

    What do you mean by increase the screens?

    How do you reset it?

  • widgemix2003 Jul 30, 2008

    I am sorry. I am a computer technician. I used to work on TV's nad VCR's about 20 yrs ago. Ok, I turned up the screen and got a screen with some bowed lines on it. There was a fluid spill onto the signal board

  • widgemix2003 Jul 30, 2008

    but I am not getting any video or audio signal through.Could the signal board be damaged?

  • widgemix2003 Jul 31, 2008

    cleaning didnt help. is there anyway to fix that board?

  • MICHAEL MULLINS May 11, 2010

    Good day, widgemix2003;

    All voltages are okay? Let me ask you a some questions, okay?

    1. What does the TV's power light do, blink or stay steady?

    2. What happens when you increase the screens?

    3. Did you try to reset the TV?

    Please let me know, big IRish.



2 Answers

Good Day, widgemix2003;

YES. The fluid may have damaged the traces on the boards. This isn't an easy fix. Look for the traces that are open are repair them. Scrape off the paint on traces, it will be easier to locate, also check the connector, between the two boards, for fluid.

Good Luck, big IRISH.

Posted on Jul 31, 2008

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Good day, widgemix2003;

I'm sorry, but when you said all voltages where correct, I assumed you was a tech or person with some TV knowledge.

Okay, let's start over:

1. To reset the TV unplug tha ac cord from the wall for 3-4 minutes.... plug back into wall.
2. On the front the TV behind the speaker grill there is a flat panel... remove.... you will a small black screen/focus block. On that item you will see the words screen , turn one of those slowy to the right. What do see on the TV's screen?
3. Since you have access to front look closely for fluid on the PCB. Look on the right and center of the board closely.

Good luck, big IRISH. Or call me on cell @ 281-380-4422.

Posted on Jul 30, 2008

  • MICHAEL MULLINS Jul 30, 2008

    Good Day, widgemix2003;

    The fluid must be cleaned off of the boards. The best Iv'e seen work is acetone. PAY attention to the on your left, that's were the vertical circuit is located. When cleaning LOOK for jumpers that may have corroded. Cover effective circuits with heavy plastic(like freezer bag) or 1/4 inch card board to protect PCB's from future leakage.

    The bowed lines indicate you have no vertical deflection.

    Hope this is helpful.

    Good Luck, big IRISH.

  • MICHAEL MULLINS Jul 31, 2008

    Good Day, widgemix2003;
    YES. The signal PCB may have fluid on it also (BRD on right). PCB could be damaged but attempt cleaning it first. The fluid may have damaged the traces on the boards. This isn't an easy fix.

    Good Luck, big IRISH.



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