help me please with my A15Mk1

  • Finaly I finish him... but.. no sound ;( ;(
    I hear the trafo in the speakers.. (just a little) and when I touch the plug of guitar cord I hear a BZZZ.. (just a little) if I plug a guitar I hear the sound but I have to put my head into to the speaker to hear it ;D .. everything seem to be wired Ok.. the tubes have a normal glow... no smoke etc etc.... He do this in every settings..

    plus... I have builded two of them.. and the same problem is in the other one... ??? ???

    I'm gonna re-confirm once again the wiring..

    Update: the voltage at the output of the rectifier is 355v and at pins 3 & 4 of the both 6V6 is 363v ??? ???

  • Re: help me please with my A15Mk1

    Hi,

    if your secondary AC voltage at the PT is about 230V and you measure about 360V at your power tubes, there's definitely an error in your wiring if the PT/rectifier/caps. Please doublecheck it with the layout plan AND the schematic.

    Regards, Martin

  • Re: help me please with my A15Mk1

    Martin.. the problem is solved!! ;D ;D

    just a broken ground wire (of the power tubes next to the solder).. hard to see bur when I try to find the problem I have seen that sh*t.. If isn't that problem it worked at the first time..

    Maybe you ask why the two of them have the same problem.. but you'll see when I post some photos.. ;) (surprise)

    I don't need of the DC heater that I have asked you.. the amp is pretty noiseless..

    Now I have justo to ajust the Bias.. and ROCK IT..

    Thanks for everything Martin.. And sorry for my bad bad english :P

Jetzt mitmachen!

Sie haben noch kein Benutzerkonto auf unserer Seite? Registrieren Sie sich kostenlos und nehmen Sie an unserer Community teil!