GGG TS808 build problem????

Started by AC30Dirty, July 13, 2006, 04:36:58 PM

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AC30Dirty

OK, so i finished a TS808 lastnight from GGG. I double checked my jack and switch wiring to make sure it was right and it was. I get signal when bypassed but when I engage the effect i get almost no sound at all. The only way i get sound is if i have all the pots maxed and even then youd have to be in a dead quiet room to be able to hear what its doing. I turn down the gain all the way and what little sound it has goes away. I cant even hear the drive. I double checked all the solder joints aswell and they're all fine also. I stumped. :icon_confused: Any help be great. Thanks ;D

petemoore

OK, so i finished a TS808 lastnight from GGG. I double checked my jack and switch wiring to make sure it was right and it was. I get signal when bypassed but when I engage the effect i get almost no sound at all. The only way i get sound is if i have all the pots maxed and even then youd have to be in a dead quiet room to be able to hear what its doing. I turn down the gain all the way and what little sound it has goes away. I cant even hear the drive. I double checked all the solder joints aswell and they're all fine also. I stumped.  Any help be great. Thanks
  This tells only that you've populated a TS board.
  "TS Doesn't Work" is all I can derive, and that gives us nothing tangible to work with.
  In/out reversed ?
  "What to do when it doesn't work" [thread] shows the information it is necessary for you to have so we can understand some things that are fundamental to debugging.
Convention creates following, following creates convention.

MetalUpYerEye

If he gets sound when bypassed then the jacks cant be backwards, though the in/out for the circuit could if thats what you meant  ;) 

Fresh battery?
Transistors/IC biased correctly?
Pots wired correctly?

Look in between the traces of the PCB, sometimes in etching/drilling/soldering, microscopic bridges can form between the traces causing malfunction. I usually scrape between any suspicious looking areas with an X-Acto knife just to be sure, its crude as a stick-n-rock but it fixed my Ruby.

Also try building the Audio Probe on the "What to do when it doesn't work" page. Follow the schematic through the circuit with the audio probe and see where it goes wrong.

And...

Have FUN!!!!!

petemoore

If he gets sound when bypassed then the jacks cant be backwards
  Sure they can, reverse the plugs in/out for true bypass, try it out, the tips being connected and ground to the both jacks, it'll pass signal true bypass style.
Convention creates following, following creates convention.

MetalUpYerEye

D'oh! Didn't think about it... My bad!

petemoore

  No baddi..
  I just reversed plugs enough...getting nothing...I hit the BP switch and the signal goes through...reverse the plugs, then I look around to see if anyone noticed...technical difficulties of ANY kind of DIY 'in the field' problems can raise angst among and inquiries from those observing...
  I leave the battery off the octave sometimes too.
Convention creates following, following creates convention.

AC30Dirty

Well I figures it out. Im so stupid!!! the transistors were backwards. Now the pedal works although it sounds fuzzy. It has more of a fuzz tone than a overdrive. any clue as to why?