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Tube Screamer whine??

Started by arawn, September 01, 2011, 04:28:49 PM

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arawn

September 01, 2011, 04:28:49 PM
Okay I breadboarded beavis's tubescreamer project and liked the sound i was getting so much that i comitted it to pcb. all good threw together a layout from his scheme and made the board, but after populating said board I lost all the magic. all it does now is whine in a quite horrific manner no signal passes or anything. My pin voltages are fine no solder bridges or traces touching or any other foolishness, what could be causing this? ???
"Consistency is the Hobgoblin of Small Minds!"

Gus Smalley clean boost, Whisker biscuit, Professor Tweed, Ruby w/bassman Mods, Dan Armstrong Orange Squeezer, Zvex SHO, ROG Mayqueen, Fetzer Valve, ROG UNO, LPB1, Blue Magic

head_spaz

#1
September 01, 2011, 11:41:31 PM
Maybe this is a good thing. Tubescreamers are dime a dozen. Perhaps you should package it up, name it Signal Generator, or Oscillator, or Oscillating Generator, and sell it on the market.
Stranger tHIngs have been known To HAPPENS.
Deception does not exist in real life, it is only a figment of perception.

R.G.

#2
September 02, 2011, 12:22:59 AM
Power supply bypassing and ground wiring are where I'd look first.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

head_spaz

#3
September 02, 2011, 02:04:38 AM
And while you're at it, don't forget to check C4.
Making sure it's connected properly, and is valued in pF, NOT nF or uF.
Good luck.
Deception does not exist in real life, it is only a figment of perception.
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