I have an alesis q25 midi keyboard, whose middle c-note first went dead, then upon opening up the unit to clean the rubber contact underneath, and then putting it back together, 2 more notes are dead. I then took it apart again and cleaned the whole rubber strip with rubbing alcohol, and then used a dust blower, as well as cleaned the surface underneath the rubber strip with 91% isopropyl, but the same 3 notes remain dead.
I can't for the life of me see why a key went dead merely by opening the unit, or the first key for that matter. If a wire was damaged then I think more or all keys would've went dead, I didn't spill anything on it either. I've tried poking the key's contact area with a tool, and pressing the rubber contact with my finger, but there's just nothing, the signal's dead. 3 keys are dead, i see nothing under them such as individual wires or leads, perhaps it's something underneath the rubber strip's surface, but didn't want to go there in case there's nothing, as usually cleaning the rubber contact does the trick.
If I knew what underlied the key's signal generation all the way to the pcb on the side perhaps I could track it down? Keys dying like flies, for no apparent reason.
Below are pictures of the inside of the keyboard, of the side of the rubber strip. The first key in view is working btw, the mess on the black key is from sticky tape. Let's see if there's some genius.
I can't for the life of me see why a key went dead merely by opening the unit, or the first key for that matter. If a wire was damaged then I think more or all keys would've went dead, I didn't spill anything on it either. I've tried poking the key's contact area with a tool, and pressing the rubber contact with my finger, but there's just nothing, the signal's dead. 3 keys are dead, i see nothing under them such as individual wires or leads, perhaps it's something underneath the rubber strip's surface, but didn't want to go there in case there's nothing, as usually cleaning the rubber contact does the trick.
If I knew what underlied the key's signal generation all the way to the pcb on the side perhaps I could track it down? Keys dying like flies, for no apparent reason.
Below are pictures of the inside of the keyboard, of the side of the rubber strip. The first key in view is working btw, the mess on the black key is from sticky tape. Let's see if there's some genius.
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