I powered my ASM-1 up last night...

gstopp at fibermux.com gstopp at fibermux.com
Wed Nov 20 00:28:44 CET 1996


     Oh no, not smoke! I would guess that it was probably one of the two 22 
     ohm resistors at the top end of the noise generator section (near the 
     VCF).
     
     These two resistors are used in a pair of simple R/C filters on the + 
     and - power supply voltages to the noise gen (this is to reduce supply 
     hum in the noise hi-gain amps). If you have a bad or backwards 
     (shorted) 10uF cap on these filters then a resistor will smoke.
     
     The MAT-02 has a little tab on one side - this should be away from the 
     V/OCT trimmer.
     
     Good luck!
     
     - Gene
     gstopp at fibermux.com


______________________________ Reply Separator _________________________________
Subject: I powered my ASM-1 up last night...
Author:  Troy Sheets <tsheets at xanadu.cyborganic.com> at ccrelayout
Date:    11/19/96 2:51 PM

... and a resistor smoked on the noise generator... no big deal... but 
both my oscillators are silent.  I am checking with data sheets my 
transistor placement, but I can't find a MAT-02 data sheet.
     
I took a chance and dropped these things in the way they looked like
they were suppose to go, with the 3 wires on each side of the can matching 
up with the 3 holes in the board.  Is this right?  If not, can someone 
explain the orientation of the MAT-02s on their board?




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