Hi Michael, hi list,
I've dug further and was about to update when I saw your mail...
Michael Buchner skrev 2011-03-28 15:37:
> If the single outputs work and some of the channels appear on the mix
> output, you have (only) a problem with the wiring. I guess, some
> soldering points are rotten.
That's my guess too after examining the schematics. It might be the C12
cap too or even the more unlikely case of rotten resistor (R59). What am
I saying? A rotten resistor was the case in my SDS-IV when that was dead
upon arrival...
> The channels signals are fed via a resistor 22k and this ugly big
> capacitor 0.47µf from emitter of the transistor T6 2N 5172 to the mix
> volume pot. You don't have to remove the whole PCB board from the
> housing to check this, you lucky man.
> Try to re-solder the channel faders (!) and the big capacitors first.
> Good luck
I think I'll removed the pcb anyway. That way I can visually inspect
resistor and capacitor too.
Thanks Michael, I keep the list posted with the progress. But now it's
time to pick up my little drummer at daycare...
--
electronically yours, jesper
- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se
>
> ----- Original Message -----
> From: jesper
> To: Simmons_Drums@yahoogroups.com <mailto:Simmons_Drums%40yahoogroups.com>
> Sent: Monday, March 28, 2011 2:48 PM
> Subject: [Simmons Drums] SDS-III separate outs vs. mix out
>
> Hi list,
>
> I brought out the SDS-III to check out what the hell is the problem I'd
> experienced with the outs.
>
> Connecting all four pads to the DIN-5 pad socket all of them triggers
> the right channels and the separate outs are loud and clear.
>
> When swithing to mix out channel 3 and 4 still produce sounds but 1 and
> 2 turns silent. I've eliminated all obvious things like grounding and
> dirty sockets, loose wires etc.
>
> When fiddling with the effect switches on channel 1 I realise that it
> _sometimes_ feeds the signal to the mix out. The problem seems to be
> located in this part of the circuitry or even the switches themselves.
>
> I'll dive into the schematics soon to see how it's rigged, but if anyone
> has any heureka moments out of this description, let me know. I focus on
> channel 1 since I get some results there and will assume that channel 2
> have some other issue I can deal with later.
>
> Recent Ebay note:
>
> A claptrap mk1 was sold on ebay Germany yesterday. 451 euros. Yesterday
> was a 70's e-drum evening with a Syncussion selling at 600+ and a
> Pollard twin at 407 (I know that exact figure 'cause I placed the 406,
> hoping to snatch the pedal and resell the synth). :S
>
> cheers,
> --
> electronically yours, jesper
>
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se