[sdiy] MCU Xtals

[Michael E Caloroso]

I have a dead Lync LN1000 keytar I bought a few years ago, it has been on
the back burner during elder care with my aging parents and job relocation.

I'm hardly a novice restoring embedded systems but this thing has me
stumped.  There's no schematics.  The last time I was in this thing, I
repaired the voltage regulator and the unit sometimes worked, then not at
all.  I'm powering it from a bench supply not from batteries.  I traced the
problem to the master clock on the mcu, nothing there.  Tried replacing the
xtal with no luck.

Now I'm beginning to suspect that I might have installed the wrong xtal.
Where's a good technical resource on mcu crystals?

Also the mcu is one of those quad leadless packages and I can't for the
life of me figure out how to pry the mcu out of its socket.  Need to probe
the pins in the socket to confirm power rails and signals.  At the moment I
don't have the mcu info in front of me.

MC
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