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Dominoe Stopper [baked output tranny test]

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  • Dominoe Stopper [baked output tranny test]

    I have a baked 'n tossed out the window 5e3 amplifier.
    AC cord insulation baked through and shorted, I replaced that.
    Amp fires up, so far it's 'working'.
    Further testing postponed until I can hopefully find the 'safety' trick...something in the tube rectifier [fuse or diode?] which would keep possible damage from a shorting output transformer from reaching in and smoking up other expensive components toward the middle or front of the amp.
    It's a Hammond 125E OT which came with a 5e3 kit, I'm wondering 'where' the coil is that I have the 8ohm tap connected to, if it is an outside coil, it got baked harder than if it is an inside coil, which would be somewhat more protected.
    http://www.hammondmfg.com/125.htm

    http://www.sonicdeli.com/ThunderTweakWeb/5e3schem.htm
    Last edited by petemoore; 09-01-2007, 02:59 PM.

  • #2
    Originally posted by petemoore View Post
    ....Further testing postponed until I can hopefully find the 'safety' trick...something in the tube rectifier [fuse or diode?] which would keep possible damage from a shorting output transformer from reaching in and smoking up other expensive components toward the middle or front of the amp.
    The lightbulb limiter is your friend always, but if you suspect a blown output transformer, disconnect it and test all leads with your ohmmeter.

    ....I'm wondering 'where' the coil is that I have the 8ohm tap connected to, if it is an outside coil, it got baked harder than if it is an inside coil, which would be somewhat more protected.
    Pardon my density, but I do not understand. Could you please rephrase that last statement?
    -Erik
    Euthymia Electronics
    Alameda, CA USA
    Sanborn Farallon Amplifier

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