On 29 Dec 2017, at 20:06, "pigeonsmusik pigeonsmusik@... [cgs_synth]" <cgs_synth@yahoogroups.com> wrote:Oh no!!! Yes ur right…. I didn't understood what RL stood for….. now i see the problem after referring to the schematics and the tracks on the board!
thanks for pointing that out and thanks for the help. Will hook it up… hopefully (fingers crossed) that it will work!bestDOn 29 Dec 2017, at 19:56, "Paul Bower paul@... [cgs_synth]" <cgs_synth@yahoogroups.com> wrote:Should there be 1K resistors in the RL positions ?
On 29 Dec 2017, at 11:23, pigeonsmusik pigeonsmusik@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:Hi Ken,
thanks for your speedy reply.here is the pic… of the board and the wiring…yes i was aware of not needing a cable for the 0v part but since it doesn't work, i thought it might be some grounding issues.bestD<IMG20171229191751.jpg><IMG20171229191607.jpg>On 29 Dec 2017, at 19:05, "Ken Stone otherunicorn@... [cgs_synth]" <cgs_synth@yahoogroups.com> wrote:No doubt a construction error, but your description does not give enough info. Try posting or emailing me a photo. You do not need a link between the 0V holes above the 100uF caps - that is a point where you can access 0V in case you need to wire something to it. The link will not hurt anything though.On Fri, Dec 29, 2017 at 7:12 PM, pigeonsmusik pigeonsmusik@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:Hi,
I need some help in getting the SPM to work..
I've soldered up all the components and pots and the links and even added a link at the 0v above the 100uf caps.
When I power up the unit, the leds don't blink and unless I touch one side of the cable linking to the led, on the end of the led, the led lights up but it doesn't blink.
I'm using yellow leds for the individual oscillator. And I've connect a orange led to the LED driver section and LD driver to the output of the banana jack that i'm using.
I'm using MOTM power distribution board from CGS and only +15v, 0v, 0v, -15v is connected.
I can't figure out where i went wrong. Any ideas or help would be greatly appreciated!
Thanks
best
Dennis
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Message
Re: Super Psycho Modulator
2017-12-29 by pigeonsmusik
connected up the 1k resistors to RL … I'm using yellow leds rated at 20mA, 2.3 volts for the oscillators. Tried both 640k and 1k resistors at the first led.. but still doesn't light up. when i touch the anode side of it though, it lights up.. but i get a buzz in my fingers.
I'm using an orange led at the led driver, that lights up with my 1k resistor. So i guess the 1k should be alright with the yellow leds, since they have the same rating.
When i connect up the output which is a banana jack to my passive banana to 1/4 output, the led on orange shuts off. There is no audio out from the output. I left the gnd connection next to the output on the pcb empty. I also exchanged the ics.
checking again…
d