News:

SMF for DIYStompboxes.com!

Main Menu

pt2399 problem

Started by Seven64, April 15, 2012, 12:01:52 AM

Previous topic - Next topic

Seven64

so i have a magnus modulus pcb here, and the boost works, the tremolo works, but the delay/chorus is not there at all.  i was comparing voltages with this thread:

http://www.diystompboxes.com/smfforum/index.php?topic=77940.0

and found that my pins 7 & 8 have no voltage - 1.3 volts depending on the time pot.

i switch chips already, and its doing the same thing.  my voltage regulator is correct, and pin 1 is showing 5v.  

what else should i check?

1- 5.01
2- 2.39
3- 0
4- 0
5- 2.74
6- 2.41
7- 0.72
8- 0.84
9- 2.44
10- 2.41
11- 2.42
12- 2.45
13- 0
14- 4.98
15- 2.44
16- 2.42

Seven64

cranked up the soldering iron a little and went back over every solder point on the board.  now it works fine.

mods can delete