SEQ2 Problems

Keith Winstanley keithw at cix.compulink.co.uk
Thu Feb 17 22:50:00 CET 2000


Right I have built the seq2 but am not getting a peep out of it!!

I tried the regulator just before inserting the IC's and got near 
enough+-12v

Has anyone found any problems with the Seq2 board?
(Before I rewire everything)
Couple of points:
I am using a 12-0-12V 100MA transformer
The capacitors are mainly ceramic disc except C1,C2,C5,C6

For the caps on either side of U13 I have used electrolytic cans 1uF
63V

Caps are the right way round!

Everything is pretty neat, I have checked the solder joints and wired
the step, start/stop, Up/Down microswitches to +12v as well as the 
Glide,Slide Length, Gate Length control pots.
The +-12v pads at the top of the board are showing about 3v with the 
IC's inso maybe something is leaking to earth?

I have also cut the overlapping track which Tom indicated some time 
ago.

Has anyone built one successfully? Are there any important adjustments
I should be aware of??

Help....TIA


Keith Winstanley
http://home.freeuk.net/lowpass




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