You can do a test on your own without being an experienced tech. Unscrew the front and take all modules out, check, if the small centering pins are still in the edge connector of the backplane and not accidentally stuck in the slot of the modules.
Now unscrew the 4 screws of the panel with the rotary encoder. You find 2 PCBs behind it: The RAM/ROM to the right and then the CPU. Pull both out.
Also check, if the centering pins of these are still in place. Clean the gold plated fingers of the cards.
Insert the RAM and move it back and forth in the connector. If there is some stain or oxide inside, the chance to get rid of it with that way is big. Same with the CPU. When you think, it is enough, check, that the two cards are in the exact position in the connector (with a torch) and power up. If some segments on the display are lit know, start again. The right startup display must be "01"
Check also the RAM battery. If it has something green outside, replace it.
Good luck
Michael
----- Original Message -----
From: Tony Henderson
To: Simmons_Drums@yahoogroups.com
Sent: Tuesday, April 30, 2013 3:37 PM
Subject: [Simmons Drums] Need some help, folks....
Hi everyone....I've recently come into ownership of an SDS7 kit. It's a basic 5 - drum pad model ( kick, snare, three toms ) and it also has a kit selector pad. I've now discovered that there's a problem with the " brain" in that the whole right - hand, programming and selector part of the module has an intermittent power fault and the LED display with the rotary selecter switch doesn't light up at all. I'm no electronics guru so I've no idea where to start. Is there anyone who does an accredited repair service for a Simmons of this vintage in the UK ? Am I even wasting my time trying to GET it repaired ?? Any pointers gratefully recieved....
Thanks, Tony
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