Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Effects => Topic started by: NannerPuddin on March 05, 2011, 02:48:53 pm

Title: TS-808 Switch trouble
Post by: NannerPuddin on March 05, 2011, 02:48:53 pm

I have an old Tube Screamer, one of the original TS-808 that a friend asked me to fix.  It will switch on, but it takes sometimes 4 to 5 stomps to get it off.  I have tested the switch, and it is ok, which leads me to believe it is the"flip-flop" circuit I have heard about.  Does anyone know about these?  I have only heard about it in passing and if I could identify it on the schematic I bet it would be an easy fix.

Thanks,

Doug

Title: Re: TS-808 Switch trouble
Post by: sluckey on March 05, 2011, 04:03:00 pm

The flipflop is the two cross-coupled transistors (plus all the associated componets) on the bottom of this schematic...

(http://www.generalguitargadgets.com/diagrams/ts-808.jpg?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a)