debugging a tokai tod-1

[Renegadrian]

Hey, I got this pedal for almost free...it's a non working 80s TOKAI TOD-1 - it's just a SD-1 verbatim copy...
now, this thing doesn't work...

I have 6.4v with a non fresh battery, but my multimeter reads 1.2 on the 9v trace and 0.6 at the 4.5v trace.
audioprobing, signal stops at the base of the input buffer.

any clues/suggestions?!

[duck_arse]

find the reverse polarity protection diode. lift one end, check voltages. you might get lucky.

[Renegadrian]

wow thanks so much!!! You were definitely right! Removed the diode and the pedal works as it should!!!
nothing special, it sounds like a SD-1 because...it's the same!!! I studied the PCB which is obviously different, but the components are verbatim! A carbon copy of the yellow one...
Thank you again!

[duck_arse]

I wish they was all as easy.