(Topic ID: 233814)

Bally -22 HV HELP

By Fordiesel69

5 years ago


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    #1 5 years ago

    Installed a whole kit but it had the bux85g in it. Worked for 2-3 minutes now I can only get 8vdc out of the HV section. Any ideas what to check?

    Attached is a photo if you want to check my work. I did use mica and a new plastic screw thru the bux 85g.

    The original HV section did not work, it just fed the full 230v to the displays thus ruining all of them. It was visually perfect however, no burn.

    hvnew (resized).jpghvnew (resized).jpg
    #3 5 years ago

    Really the instructions I read about the bux84 conversion wanted the screw shrink wrapped and a nylon washer used. I will swap out with metal screw and see what happens.

    #5 5 years ago

    R51 is getting HOT. I went ahead an changed the screw to ensure continuty. No dice. Still 8v. I think the two 2n3440 are toast as in diode test they do not match my working boards. I wonder if the BUX85 is toast as a result of it not being grounded.

    #6 5 years ago

    Would my plastic screw have caused things to fail?

    #11 5 years ago

    UPDATE:

    Got the kit from a very well known supplier. I changed VR1, Q22 and Q23 again from parts from marco to make sure they are from a different source. Perfect. Got the voltage down to 160 and all is well.

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