Tag Info

I would try cleaning it first with a non-residue, non-conductive contact cleaner. DeOxIt is the most widely recommended spray. Here's a good read (with pics!) by someone with a similar problem.

I'm going to suggest you take these units in to a proper electronics service center and have them checked out by someone who troubleshoots this sort of stuff on a day-to-day basis. Normally I'd be all for going it DIY but you're dealing with high powered electronics. There is no room for error here. If you screw this up the result could very well be death. ...

I have a Roland D-50 that is from the same era as the D-20, so the mechanism should be about the same. Usually problems with keys not working properly is related to the circuit board contacts getting dirty. Be sure to read all instructions before attempting this. If you do not feel comfortable taking the keyboard apart, take it to a qualified service ...

One of my BX5a's had the same issue about a year ago and the culprit ended up being failed capacitors. You can usually spot them when you open the unit because they're bulging and often leaking dark colored goo. If you're not experienced and comfortable working inside electronics, you should take them to a shop for repair. This is a potentially dangerous ...

There are two types of switches; normally open and normally closed. The normally open switch only makes contact between the two wires when it is pressed. The normally closed switch makes contact with the wires until it is pressed. Likely your keyboard is expecting one type of foot switch and you are using the other. It is also possible that your keyboard ...

You pedal is reverse polarity in relation to your keyboard. If you specify what brand of sustain pedal you have, we can tell you how to remedy it. Essentially, Roland, Korg, and Yamaha utilize pedals that are the reverse polarity of E-Mu, Ensoniq, Sequential, etc. Many, many keyboards have switchable polarity as do many sustain pedals. The D-20, if I'm not ...

Just a thought: I have had keys on synths stop working where they had been heavily used to input drum patterns, the same keys being tapped with gusto to achieve that authentic rhythm... Anyway, it turned out that under the keys was a plastic lug that pressed down on rubber tubing to trigger the note. Over time, the lug had cut through the tubing, which ...

If you have a multimeter finding out the resistance value of the potentiometer is trivial. Simply hook one lead to the left, or input lug, and another lead to the middle, or sweeper lug. Set your meter to ohms (resistance) and measure it out. I'm guessing it's likely a 10k like @jlebre mentions. Once you know the resistance value for the potentiometer, next ...

Chances are it'll be something like A10k, or A14. That means it's a log pot, 10k resistance, or 1+4(zeros) resistance, or something similar. On older equipment, A will be linear though, and C would be log. Also some pots do say Lin or Log. You would be looking for a single gang, single turn rotary potentiometer. If you live in the uk, and use places like ...

We use EML on our SSL parts. In addition to cleaning contacts, it also lubes the whole mechanism. I use DeOxit mainly to clean faders and then apply the deoxit lube on the fader rail (for instance, your D-Command Penny-Gilles). Never tried DeOxit on knobs before maybe because of the lack of self built lube, and the fact that the spray actually helps the ...

Disassemble the device until you can see the broken part. Look for identifying codes on the part. (If it's like the picture you linked to, you might have to desolder it to look at the underside.) Web search for all combinations of such codes, and try including the keyword "datasheet". (You may have to add or remove hyphens/spaces, or use a prefix of the ...

Removing the black plastic strip should allow you to slide the key toward the "hinge" end and it should come out quite easily from there. Any other method will be very difficult and risk breaking the keys. You may be able to only partially remove the strip by peeling it only part way off. I seem to remember doing something like this when removing the ...