[sdiy] Vibrothang update

[Seb Carr]

Hi all,

well i've found two broken traces and repaired them, and this fixed he
problem of it initially not switching on. Fixed two wires to sockets and
this fixed the humming. Replaced 3 suspect transistors, and now when
bypassed the signal can be heard fine. When activated, the led showing lfo
activity fades in and out as expected, and on certain settings the lfo can
be heard beating. What it doesn't do is pass either the modulated or
cleansignal to the output, just goes silent (except for lfo noise). Does it
look to be a problem with one of the 13600's? (as far as i understand they
multiply the clean sound and the sine lfo to produce the tremolo output)

Any ideas?
Replace the 13600 in question?

Thanks

Seb Carr