Doombutter, fuzz only, no whacky

[bigrigg]

Hello,
here is what I've got......
volume pot works, track pot effects LED sensitivity to playing.  Fuzz and fuzz lift work.  Bypass works.

No response from depth, delay or blend.  Tried the pulse LED from lug 2 of track pot with no result.
Have tried 6 different LDR's.  Tried the "5 pack" from radio shack.  Don't see or find any obvious shorts or grounds.

Where the heck do I start to de bug?
Your help is greatly appreciated as always.

[bigrigg]

damn....guess I'll bust out the audio probe and DMM and have a go at the shematic info.  Wish me luck.

[bigrigg]

Well not very exciting but resolved.  Stupid IC was bad.  Replaced it and instant whacky.
More news to come when it's finished in the build reports.