MOTM

I had a *long* debugging session with a customer building a MOTM-300 VCO 
from parts. Was dead in the water (no outputs). He had previously replaced 
*all* op amps, the MAT-02EH and the LM319. To no avail.

Them we started on the transistors. He noticed that he had 2 'batches' of 
2N3904s::  2N3904 - CJ22 and others marked  2N3904 - J04.

It turns out these have *different pinouts*. It's still an "2N3904" but not 
the proper EBC pinout! Which is...errr...NOT per JEDEC standard (the 2N 
means the part is supposed to be in a registered database) but I guess no 
one gives a rat's ass about JEDEC, JAN-TX and all those 'old fart' 
transistor specs.

So, *be very careful* buying 2N3904s, you want EBC pinouts. CHECK THE DATA 
SHEETS!

Paul S.