Good morning!

I bought a Big Muff Deluxe for bass.

I plugged a power supply with positive central (not negative) and i think i have fried the protection diode. I saw it when I have opened the pedal to see if there was a battery inside and it was a bit broken, all the rest of the circuits look ok.

However, after that, I plugged different batteris and active and passive basses (so the broken circuit of the diode should be not included). The pedal works, as the lights turn on when i switch the foot controls, but the audio signal, connected from input to output does not pass through the pedal and the amp is mute, like if no sounds arrives to it. The whole signal is “mute”, even with lights and effects are off. (i attach a photo)

If i plug the bass on “output” and the audio exit on “direct out”, it works and the audio signal goes to the amp. If in this configuration I try to click the effect controls, the audio goes off (photo attached). If I plug the bass on “input” and the amp exit on “direct out”, the sound does not reach the amp.

I suppose there is a problem on the “input part” and I do not know which are the causes (wrong polarity last time? other reasons).

Considering this, please I have a few questions:

The warranty service could cover the diode damage/substitution? If not, how much is the substitution of this piece?
The warranty service could cover further damages in future, not considering the diode?
What about the general problem even if I plug the battery (sound does not pass through the pedal, even if it is off)? Could the problem be caused by other reasons or because of the wrong polarity on that episode? It could have cracked other circuits? Could you solve it and for how much?

Thanks in advance,
Best regards