crwdns2934241:0crwdne2934241:0 VA6DAH

crwdns2934249:0crwdne2934249:0:

Had a bit of trouble understanding your question, but yes, I have used a ultrasonic cleaner for 5S boards before, and it did not damage the PCB or components.

Also please comment on this answer what you mean by crystals? Crystal oscillators will not be affected.

crwdns2915684:0crwdne2915684:0:

open