SiriusHardware
Veteran Member
I know folks who ordered MC3446 from Cricklewood in the UK in the last couple of years, when they were first ordered they were about 4 GBP each, then the next time about 6 GBP each. While all the MC3446 devices ordered from Cricklewood worked, it may be useful, and cheaper, to try to diagnose the health of all three of your original MC3446 ICs first.
Remove them all in one piece, fit them in sockets and move them around to see where any faults indicated by the diagnostic programs move to when the chips are moved around. You could find that you only need one or two replacements.
Remove them all in one piece, fit them in sockets and move them around to see where any faults indicated by the diagnostic programs move to when the chips are moved around. You could find that you only need one or two replacements.