e-licktronic Forum

Hey everyone,

My crash was fine when I was done building the Nava, but a few days later, probably because I was using the Nava without a case, the Crash stopped working.
I only hear a slight audio click when it gets triggered but no real sound.

So I finally got time to take my scope for a spin and started looking into it. Since the HH/cymbals are sample-based rather than pure analog, I'm having a hard time knowing where to look.. I measured the "trig" and "acc" spots on the PCB and got the following results :

Accent


Trigger


Those seem to be fine. Then I looked at the schematics and wanted to know if IC63 was getting a signal from IC59 pin 3 so I measured that pin and that's what I get, the signal is very weak, only a few mV (is that good or bad? don't ask me!)


Remember guys, I have no idea what I'm doing . What would you guys advise I measure to troubleshoot the crash? I'm a novice in electronics.
Thanks!

Bump?? Can anyone point me in the right direction?

I'm having the same problem debugging the crash. My crash stopped working after playing around with the kit. It has a very faint sound. I have been using the schematic, starting from the CRASH_OUT, working my way back through the components. I have a good reason to believe that it is because one of the opamps (M5218L) burnt out, which would explain why the voltage is so low.

Hey jhiggins,

Yeah I noticed the same today by listening to the signal at quite high volume. You can make out that it's the crash, but very very low. How to know which opamp is dead? Luckily I have two spare M5218L