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    Circuit board trouble shooting fault.

    No signal to decode box then programmer has an issue. Or signal to decoder is ok but no signal to programmer then decode box has an issue. Can we trick the programmer into thinking the decode box is connected just to see if H display is changed to X when switched on. Connect 2 pins etc to make...
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    Circuit board trouble shooting fault.

    H informs user that it is in stand alone mode. X indicates user decode box is connected. No model sorry. I understand it will help you but don't have it. This is why I was thinking if signal is going to the decode box in first place and if so was signal being sent back. Just trying to narrow...
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    Circuit board trouble shooting fault.

    It is a key programmer and decode box. If Key programmer is switched on in stand alone mode H is shown on screen. Connect the decode box and switch on key programmer screen should display X but it doesn't as H is shown. Key programmer does not report back that decode box is connected.
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    Circuit board trouble shooting fault.

    It's was a generic explanation of the issue I have.
  5. B

    Circuit board trouble shooting fault.

    Hi, I have a control box which works stand alone or with additional box connected. In standalone mode when the unit is switched on H is displayed in the screen. If additional box is connected and unit is switched on X is shown in the screen. My problem is the unit does not see the box when...
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