Micro Synth question- Puretube? anyone?

[jimbob]

Puretube- is this one of yours? I cant seem to get it going right. There is some volume from it but really no effect. HAve you any ideas or common problems youve heard about these things. I have yet to chk the soldering and connections, switches--though there is only 1 for power. Ideas?
anyone?

[jimbob]

I checked a lot of the solder joints--which seem to be a common EH problem--but no go..same problem.. I do get some sound--but very little--when I move the guitar slider to zero=0. It cuts out w no sound when moved to 10 (the top)  The 2nd to the last slider (stop) make a little swoosh when moved from top to bottom. Also there seems to be no bypass when the effect is off..theres just no sound at all..

bla bla bla..anything anyone?

[mikeb]

No bypass means that even the first opamp (buffer) stage isn't working or isn't engaged. Check power to the IC(s), trace with audio probe....

Mike

[jimbob]

So far-- i chked all solder joints--i found a bad power slide switch and fixed it-- no diff though--chked all ic in sockets and pushed them down making sure there secure--all good--chked input and output connections= all good..I was wondering though--theres a 3pdt switch but only 3 lugs are being used..could it be a bad foot switch?

i think ill save the audio probe for last..Im not sure where to start since theres 2 boards in there one on top of the other...but--ill get'r done eventually..this will work! I hope..It sells for 278.00 new..i bought in new condition but non working for 9.99 --be awsome if i got her working..whats interesting is that my del memory man had the same symptoms and it turned out to be a loose output wire and a bad slide switch..works great now though..

[puretube]

not "mine" - like been said: check everything mechanical: wires etc.;
then: power supply: measure voltage on supply pins...
found the schem on the web?

good luck...


ps: I offer $ 12.50...

[jimbob]

If there isnt a by pass signal going through--can that mean theres a bad  stomp switch or the input orout put is bad? MAny of the EH stuff i get is new but broken and it ussually always tirns out to be something as simple as a loose/broken wire or output jack ect.. simple silly things like that. The last repair i made was on a Visual Sounds Heckyl Jeckyl distortion and after audio probing it and a little thought--it turned out to be a bad output jack..I was beginning to think it might be one of the many tl072's or the jrc4558. NOpe ..just that simple..

any ideas ?