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  • T202 wiring question

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    Where does this blue wire go from the fast slow switch on my T 202?
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  • #2
    My ol' T500 didn't have a blue wire in the old photos BUT looking in your photo, right next to the brown wire in front of the can, I think I can see a terminal with a blue wire coming up from underneath.
    If it IS, that's your spot.
    If it ISN'T blue, it's likely the spot because there's no reason to have a wire running to an unused terminal.

    I had another look at my fuzzy pics and saw I had a red and black wire running to those two terminals, so that's definitely your spot.
    Blue and brown are the usual colours for AC power, so I dunno why my later model had red/black ...
    -1958 Hofner 550 archtop guitar -1959 C3 and PR40- -1964 Busillachio Harmonium- -1964 M101-
    -1967ish Leslie 122- -1975 T500 (modded..chopped, and reassembled!)-
    -DIY 760 FrankenLeslie/rat hideout-
    -1980 Electrokey Electric Piano- -Yamaha electric Harmonium (early 80's?)-
    -1990 Jansen GMF150 amp- -1992 Korg 01W/fd- -1992 G&L S-500 geetar.

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    • #3
      Ah thanks. I connected the blue wire there by the pot. It is a purple wire.
      Inspecting underneath the circuit board chassis (over the bass pedals) I spotted a fried out component, possibly a resistor. I am struggling with the wiring diagram. Anyone know what that component was?
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      • #4
        That's in the power supply.
        Mine's all been rebuilt and I don't have "before" photos..
        but the wires attached to the back should tell us what component this is. The power supply diagram has a whole page to itself in the T500 manual, that's the best place to look.
        What are the wire colours attached to the back of the component?
        -1958 Hofner 550 archtop guitar -1959 C3 and PR40- -1964 Busillachio Harmonium- -1964 M101-
        -1967ish Leslie 122- -1975 T500 (modded..chopped, and reassembled!)-
        -DIY 760 FrankenLeslie/rat hideout-
        -1980 Electrokey Electric Piano- -Yamaha electric Harmonium (early 80's?)-
        -1990 Jansen GMF150 amp- -1992 Korg 01W/fd- -1992 G&L S-500 geetar.

        Comment


        • #5

          Detatched the toggle switch for the leslies on my T202.
          Turned on the Hammond, pressed the SIGMA solenoid switch lever (with a plastic pen just in case it was live) prior to adding new resistor and the Leslie motors changed speed as normal.
          Added a new resistor (to gap in last photo) and then pressed the SIGMA switch and there was a big short, blowing apart the resistor again.
          This unfortunately also tripped the house consumer unit and shut down a Mac computer crashing the drive with hours of un-backed up work lost. So that was unfortunate.
          Anyhow the diode on the SIGMA works (and a few other diodes have also been tested close by) but I have not had a close inspection of the solenoid.
          I don't yet understand why I am getting a short and I am not sure if anyone could suggest any places to check?
          Please let me know if you have any ideas. Thanks.

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          • #6
            Jim,
            did you make any headway on this one?
            Might you have, perchance, rewired the motors before this?
            If the AC is wired up like DC, ie one wire grounded, it might cause fireworks...
            -1958 Hofner 550 archtop guitar -1959 C3 and PR40- -1964 Busillachio Harmonium- -1964 M101-
            -1967ish Leslie 122- -1975 T500 (modded..chopped, and reassembled!)-
            -DIY 760 FrankenLeslie/rat hideout-
            -1980 Electrokey Electric Piano- -Yamaha electric Harmonium (early 80's?)-
            -1990 Jansen GMF150 amp- -1992 Korg 01W/fd- -1992 G&L S-500 geetar.

            Comment

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