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  • in reply to: Repairing a vintage electric mistress #120082
    DaveC22
    Participant

    No dice!
    Ok, so I replaced the transistor with a 2n2907a, I also replaced the 33uf cap with a higher voltage tolerance one. Now, when I hook up two 9v batteries, I get 18.96v going into the circuit and at pin 7 of the lm741, at pin 2 I get 6.86v, pin 3 I get 9.44 volts and at pin 6 I get around 3v.
    At the transistor emitter I get the full voltage, at the base I get 18.16 and at the collector 18.75v.
    What the heck is going on here? Appears as if there is little to no regulation going on.

    in reply to: Repairing a vintage electric mistress #120068
    DaveC22
    Participant

    Cheers eh man for the quick response. My instinct was to go for the tranny but I want to keep repairs to a minimum ideally.
    Thanks again
    Dave

    in reply to: Hot tubes nano problem #120009
    DaveC22
    Participant

    It could be that you have battery power and adapter power, try just using one or the other, ie remove the battery.

Viewing 3 posts - 1 through 3 (of 3 total)