My rangemaster OC44 problem

Started by willalaga, November 16, 2005, 01:54:21 AM

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willalaga

Hi, I chose to build a rangemaster clone like the one on general guitar gadgets, i purchased my transistor (mullard oc44 from small bear), and i soldered everything to the rts pcb, including a transistor socket. I currently don;t have a 3dpt since im waiting for it to come in the mail. I tried testing the pedal by connecting the appropriate wires, my roommate put the tranny in with the uncut leads, and it was working like a charm, following this i cut the leads and im not sure if i put it in the right sockets, or damaged the transistor (though im unsure how this could have happened), but the setup is not working anymore, anyone know what might be wrong. I took the lead with the red dot on the side of the transistor to be the emmiter, the middle one to be the the base, and the last one to be the collector, is this right? if so, why might it not be working, i tested that the socket and the leads are making a connection using a multimeter, and all leads are in contact with the socket. please help,
Will

hairyandy

IIRC, the red dot is the collector.  I'm pretty sure that's correct and from there it goes collector-base-emitter.

Andy Harrison
It's all about signal flow...
Hairyandy's Layout Gallery

MartyMart

In general what Andy say's is correct, though I've had some "reverse" pinouts too !
Sometimes, due to the nature of the circuit, they will work "both" way's round .... go figure !!
The "wrong way" will either Not work, or be quieter and more "splatty" sounding.
So long as you've used sockets, you wont damage the OC44.
"Heat" will do that quite quickly !!
The only transistor that I've rendered useless so far was a Jfet  2N7000
I think .... that got Hot .... and died  :-(

MM
"Success is the ability to go from one failure to another with no loss of enthusiasm"
My Website www.martinlister.com

willalaga

excellent, thanks, I found some sites that stated this, and im about to test it. thanks for the help though, greatly appreciate it.