Yahoo Groups archive

Vintage Simmons Drums (UK) Users Group

Archive for Simmons_Drums.

Index last updated: 2026-03-30 01:08 UTC

Message

Re: [Simmons Drums] SDS7 Program Selector Pad issues

2014-03-07 by <music@...>

A test of the Selector Pad revealed that it is 100% functional. All pressure pads on the Selector work flawlessly.
However, on this Selector Pad, Pins 4 & 6 were Pgm 2 and Pins 4 & 5 are PGM 3.. which differs slightly from what Michael indicates below. (2&6=P14, 3&5=P7)
One of the SDS7s being tested with the Selector Pad is a low numbered early "white" connector version, and the other one of the last ones to be made. But I doubt they would have made a change to the Sel Pad pinouts along the way?

Here are my Sel Pad test results:
PGM     Pin   Pin
01           4       7
02           4       6
03           4       5
04           4       8
05           3       7
06           3       6
07           3       5
08           3       8
09           1       7
10           1       6
11           1       5
12           1       8
13           2       7
14           2       6
15           2       5
16           2       8

Next, I test the SDS7s

Cheers
Alan
 


---In Simmons_Drums@yahoogroups.com, <buchnerelectronics@...> wrote :


The selector pad is only 16 switches. To check, if the SDS7 is working right, take a wire and connect (in the socket of SDS7) pin 4 with 7 for PRG 1, 2 and 6 for PRG 2, 3 and 5 for PRG 3 and 4 and 8 for PRG 4. Then check 3 together with 7,6,5,8 for the next 4 PRG. Then again with pin 1 together with 7,6,5,8 for the next 4 PRG. Then again with pin 2 together with 7,6,5,8 for the next 4 PRG. Pin 9 and 10 don't have function. Clean the pins inside the selector jack.
To check the wires, remove the FSR and shortcut the Matrix X colours green-yellow-brown-red with one of the matrix Y colours white, violet, blue and black.
It is possible to clean corroded FSRs, but I don't think you need to.
 
Best
 
Michael
 
 
----- Original Message -----
From: music@...
Sent: Saturday, March 01, 2014 11:40 PM
Subject: Re: [Simmons Drums] SDS7 Program Selector Pad issues

 

I didn't realize that I had to remove the rubber that is taped down to the chassis in order to access the FSR contacts.... was hoping they would be inside the case itself. The chassis merely houses an Earth tap, a ribbon connector to/from the FSRs, and a bit of shielded cable that exits out of the chassis to the SDS7. Huhn.

Before I attempted prying the rubber surface off and risking damaging it, I tried the Selector Pad on a second SDS7... and was surprised to see that Selector Pad buttons 2, 6, 10, 14 (basically, the second column on the Selector Pad) which didn't work on the first SDS7 worked on the second SDS7... however, pad buttons 9, 11, 13 which did work on the first SDS7 now didn't work on the second SDS7 !!!!

So, this points to an issue on the SDS7's themselves I would think. Either the connector on the back of the SDS7 cases or a component inside the Brains needing attention...

Thoughts?

Cheers
Alan 

Attachments