• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Jadis Defy 7 restoration

Hello all.
I’ve got a Defy 7 that needs some attention. Pls don’t ask me why or how :))). It’s working, sort of, but when I looked inside I found some problem areas.

1. All fuses were 250mA instead of 160mA, and one was 500mA!
2. One 180 ohm resistor burned, as well as near-by 1K. Both were cruelty replaced from the bottom side with large 5% resistors.
3. 4.7 ohm 10w de-coupling resistor between two banks of the large blue filter caps was removed completely;
4. Second stage filter caps (two [email protected] in series each channel, located at the very corners at front of PCB), were replaced with two 750uf photo flash caps in series!

I wonder if I should leave it alone (apart from replacing 180 ohm and 1K), or restore it to stock?

Any advice appreciated


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