Well, this was a new one for me -tales of debugging

Started by MikeH, August 01, 2009, 05:33:51 PM

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MikeH

Built a clarinot last night (cool circuit, DOUBT I'll find a practical use for it though  ;) ) Anyway, when I fired it up the first time, I got nothin.  Did some checks... input is grounded- ok.  Not a lot of places for solder bridges, scored all the area in between the traces anyway.  Still continuity btw input and ground.  Pulled the IC, thought it was possibly shorted internally- still the same thing.  Desoldered the socket, to see if it was shorted out- no, socket is fine, input STILL connected to ground.  Grasping at straws, I desoldered my 1M pulldown resistor which then didn't look quite right for some reason- then I noticed the bands were brown-green-black instead of brown-black-green.  A 15 hom pulldown resistor... that'll cause a shorted input for sure!  Where the hell did I even get a 15 ohm resistor?!? I think it may have gotten slipped to me with a bunch of 1Ms.  Anyway, that was a new one.
"Sounds like a Fab Metal to me." -DougH

frequencycentral

Quote from: MikeH on August 01, 2009, 05:33:51 PM
(cool circuit, DOUBT I'll find a practical use for it though  ;) )

That's what I found too, I was either going to sell it or re-use the parts, instead I added a fuzz lift switch for clean sound and added a LFO to modulate the delay time instead of the envelope - great for chorus, slapback delays and insane synth-like pitch modualtion - now I love it. My mods are over on the main Clari thread - no 15 ohm resistor included though.  ::)
http://www.frequencycentral.co.uk/

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