Hey everyone,
Long-time lurker posting finally something.
I recently got into recapping an amp of a Hohner Electra Piano. It's kind of the german version of the Fender Rhodes: very cool instrument released in 1968.
The electrolitics were the original ones and needed to be changed. Since I usually deal with tubes, I want to be sure that what I'm doing is correct before screwing up.
Thank you for your help. As I said, usually I'm doing things on tube amps, so I just want to be sure that I am doing things correctly.
Long-time lurker posting finally something.
I recently got into recapping an amp of a Hohner Electra Piano. It's kind of the german version of the Fender Rhodes: very cool instrument released in 1968.
The electrolitics were the original ones and needed to be changed. Since I usually deal with tubes, I want to be sure that what I'm doing is correct before screwing up.
1. Please correct me if i'm mistaken with the trim-pot adjustments:
- Adjust 100k pot so the middle-rail (excuse my lack of correct jargon) is one half of the supply voltage.
- Adjust 250R and 1k pots so the the voltage between the base and emitter of T4 and T5 are the same.
Old School)))
Adjust 250R (roughly from the minimum) and 1k (exactly from the center) current T6, T7 15-30 mA. (Monitoring the voltage drop of 7.5-15 mV at 0.5 ohms).
Or a voltage of 500 mV + on B-E T5 (be careful not to damage Ge T6, T7)
Adjust 250R (roughly from the minimum) and 1k (exactly from the center) current T6, T7 15-30 mA. (Monitoring the voltage drop of 7.5-15 mV at 0.5 ohms).
Or a voltage of 500 mV + on B-E T5 (be careful not to damage Ge T6, T7)