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Hey there! Unfortunately, I don't have an answer to your problem. But I notice you mentioned that you have a factory schematic for your SDS8. Would you be willing to share that with another Simmons lover? I'm having some troubles with mine and it would be a huge help.
Or perhaps you know where I can find one I can download. I have looked around online but haven't been able to find a factory version--just some hand-drawn versions that I don't trust.
Let me know either way.
Thanks,
J
---In Simmons_Drums@yahoogroups.com, <simmons_drums@yahoogroups.com> wrote:Has anyone else experienced the follow issue with their SDS8? The "noise" function seems to spill over into all channels while in factory mode. Also, when you switch channel 5 (low tom) over to user defined, it seems to kill the noise function completely and on all channels. Switch it back to factory mode and the noise function returns, but on all channels like before.
I did a quick visual inspection of the board and found nothing obvious like burned out components. Is this a common issue with the SDS8 as it gets older? I do have a factory schematic and do have some basic electronics knowledge and can solder well. I'm 3 for 4 on repairing older Simmons equipment (2 SDS7 repairs successful, a Hihat card conversion successful, but one failure....my SDS9, which I gave up on and sold off for parts or repair.)
I guess what I'm asking is where to start looking for issues? Is it in the noise generation circuit, the 3372 chip, a common diode, cap, transistor or resister in a certain circuit, or in the "latch" circuit I should be checking?
To me it sounds like a circuit is "stuck" or "cross talking" when it does this, which is all the time.