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Panasonic PT47WX52F How do I remove the SIgnal processor A board. This one and the D board (deflection) board are attached together through white D connectors. Unable to figure out how to disconnect the conenctors. Any help is appreciated. Panasonic PT47WX52F

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  • rams_20879 Sep 12, 2008

    Thank you. I will try this. Also, Convergence + reading a high of 18+ Volts, whereas the service manual is showing a low reading of 0.46V. Can this be a STK 392-110 problem or something else? Are the STKs soldered on th ebottom of the board or only surface mounted? any help is appreciated

  • rams_20879 Sep 13, 2008

    Thanks fo ryour help. We were able to remove the board successfully. Installed the STKs and the turned the TV on. Th evertical line looked good which was blurred before. But,oteh rcolor needed adjustment. So, while trying to adjust the covergence 2, the TV turned off and started blink 5 times. According the manual, it is IC 4011. Is this realistic? The TV sreen was dull not very bright either when adjusting convergence. Noticed bridge conenctor came off so put it back. But, still TV is not switching. Any advice?

  • rams_20879 Sep 14, 2008

    I have checked the bridge conenctors. They look Ok. I even touched up the solder on STK chips. No improvements yet. The unit starts up and immediately shuts off blinking 5 times. Before I replaced the STKs, the unit was normal except the convergence off, especially the green vertical. After I replaced the STKs, the screen wa snot that bright but the Green vertical was perfect. When I started to adjust the convergence and brightness, the unit turned off itself and since then the problem do not go away. any idea?

  • rams_20879 Sep 14, 2008

    I have checked all the resistors. They look fine, Any other ideas?

  • rams_20879 Sep 14, 2008

    I did check with a digital meter. They are within tolerance.

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How do you get into service mode for this panasonic?

Posted on Oct 26, 2008

I have a Panasonic PT47WX52F. Green convergence (Verical was distorted). TV was working but convergence issues. So, replaced STK 392110 bought from suburban electronics. The Green vertical line was straight and was glad to see that but the screen was not bright. During my convergence adjustments, TV went blank and error came up. It was flashing 5 times. Checked the resistors, they were right on the mark as they were supposed to be. But, I still went and replaced all the resistors. Still no improvement. Then I took the STKs out of the circuit and plugged the board with with no STKs. Still flashing 5 times. Then I replace with new STKs. But no improvement.
According to the service manual, 5 flashes is the IC 4011 (NTSC signal processing) which has nothing to do with the work done, convergence. The TV turns on for a few seconds and turns off, relay clicking is heard. . Any suggestions/comments are welcome

Posted on Sep 21, 2008

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  • Projection T... Master
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Those are bridge connectors they stay attached to the A board and release from the D board. Just slide a small screw driver under the bridge on the D board side and gently lift up they will pop right off.

Posted on Sep 11, 2008

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  • Sonny Berry
    Sonny Berry Sep 12, 2008

    yes the ICs are most likely not functioning to regulate the output voltages, they are solderd into the circuit board on the back side of the board.

  • Sonny Berry
    Sonny Berry Sep 13, 2008

    double check all the wire connections especially the bridge connectors as it is very easy for the wires to jump out of the channel and end up shorting on theos bridge connectors

  • Sonny Berry
    Sonny Berry Sep 14, 2008

    sounds like you may hae a open resistor from when the origional ICs went out. Panasonics have been known to open the 2.2 ohm 2watt resistors alot of times. have you checked the 2.2 ohm 2 watt resistors

  • Sonny Berry
    Sonny Berry Sep 14, 2008

    you cant always tell by looking at them check them with a digital ohms meter they have to be within 5% tolerance of their ratings or the set wont have convergence control.

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The bad new is the resistor is bad. If it is reading 2 ohms its bad because the rated value is .29 ohms and 5% tolerance. I would venture to say that the convergence amplifiers have gone bad. due to excessive current. Since the deflection and convergence boards work together they might both be defective. I would first suggest that you take the TV to a qualified TV repair shop, to perform the repair, but if you what to do this yourself you will need the following items:

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