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 Forum index » DIY Hardware and Software » fonik's place
SSM 2044 issue
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o-live



Joined: Aug 14, 2012
Posts: 25
Location: france
PostPosted: Fri Aug 31, 2012 3:27 am    Post subject: SSM 2044 issue Reply with quote  Mark this post and the followings unread
hello

i have finished soldering on my first fonitronik modules with the ssm 2044 and i have some problem on it

resonnance doesn't work correctly and i search search for wich reason when i turn pots i listen some changement but no resonnances ,just filtering .

i have try to set the trimpot of feedback (self osc) the sound come loud to thin

can you help me for know wich value (v) i need to read on different point of circuit please

in entry i have exactly 12.6v -12,3v

on tl074 11.75v -11.66v
on pin 1 have only 1.71v (with resonnace pot at max and trim pot open if i close the res pot i have 0v)

in pin 2 of ssm 2044 i have 1,71v

now i don't know where i need to search

thank for you help
have great day
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
PostPosted: Fri Aug 31, 2012 1:20 pm    Post subject: Reply with quote  Mark this post and the followings unread
what board did you use?
did you do the common troubleshooting (check all solder joints, values, continuity)?
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matthias
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o-live



Joined: Aug 14, 2012
Posts: 25
Location: france
PostPosted: Fri Aug 31, 2012 2:10 pm    Post subject: Reply with quote  Mark this post and the followings unread
Quote:
what board did you use?
did you do the common troubleshooting (check all solder joints, values, continuity)?


hello Mathias

i have press n peel fonitronik ssm2044 vcf available on your site

i think i have tested all continuity before soldering and after soldering (i have find a problem of continuity on a resistor now is fixed)

for the component value i check now for see if i have an error
because it's stange teh current value from the begin to the end ,start at quite 12v and finish at less 2v in Q pin
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