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Hi everyone! And sorry for my English.
I've got this really rare amp without footswitch and started to dig in.
First, I've figured out that footswitch works by switching other wires to the ground.
So, without footswitch both "volumes" and reverb are active.
But reverb didnt worked and seller said to me that it could be turned on only via footswitch.
So now I am digging reverb circuit, and I must admit I am quite a newbie in it.
Here is what I have now:
- Touching reverb tulip wires works like touching the ground - hum decreases.
- Touching reverb pot contacts while reverb is on - makes hum, so signal is present on it, and when reverb is turned off, it surely doesn't.
- Resistance of input transfomer in tank is only 10 ohms and output transformer's resistance is 200 ohms. Both jacks are grounded and aren't insulated from tank's chassis, so whole thing works like an 10 ohm jumper.
Where should I look?
I've got this really rare amp without footswitch and started to dig in.
First, I've figured out that footswitch works by switching other wires to the ground.
So, without footswitch both "volumes" and reverb are active.
But reverb didnt worked and seller said to me that it could be turned on only via footswitch.
So now I am digging reverb circuit, and I must admit I am quite a newbie in it.
Here is what I have now:
- Touching reverb tulip wires works like touching the ground - hum decreases.
- Touching reverb pot contacts while reverb is on - makes hum, so signal is present on it, and when reverb is turned off, it surely doesn't.
- Resistance of input transfomer in tank is only 10 ohms and output transformer's resistance is 200 ohms. Both jacks are grounded and aren't insulated from tank's chassis, so whole thing works like an 10 ohm jumper.
Where should I look?
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