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BP Microsystems EP-1 EPROM programmer voltages

Discussion in 'Electronic Repair' started by Commander Dave, Jul 26, 2004.

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  1. Greetings all...

    I have a BP Microsystems EP-1 EPROM programmer that MIGHT be going out on
    me. Don't want to spend the $$ on a new one, as I only do old chips anyway
    and it suits me fine.

    The programmer has a test mode that you measure the voltages on the pins
    when it prompts you. Some of the voltages on mine do not match... such as
    4.4v instead of 2.2v. Also, the voltage on the programming pin varies a good
    bit when programming. Instead of 21v, it might be in the teens or less.

    The symptoms are that the programmer will do some chips fine, some other
    chips after burning twice and some not at all. I have no way to verify if
    the chips are bad, so it's kinda hard to diagnose the EP-1 as being at
    fault. (I working on someone verifying them for me).

    Does anyone have an EP-1 that I could compare test voltages to? It would be
    nice to see if mine is within the norm....

    -Commander Dave
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