Hello there, I am currently repairing an old Juno 60 synthesizer. Re-capping and need to replace two IC's I am a novice so dont know where to start looking for the IC's or their modern equivalent. Can anyone help?
Thanks for the response Both chips are from the Chorus Board. The HD14051BP Hitachi 16P DIP i have found on ebay. says its 'original' but i am having trouble finding the μPC125ZHZ ic chip or equivalent. limited knowledge knowing where to start. The two chips are bottom right on the board. Hd bottom right. the other just to the left of it
You could probably find a sub like one of the THAT VCA parts maybe. But it might not be pin-compatible. You could maybe put a different one on a "surf-board" or have a tiny PCB made from OSHPark and then just mount the customer PCB in place with bits of bus wire.
But maybe someone knows a source for that.
Update: Looks like THAT 2180 might be a drop in replacement.
Thanks. Yes me and a friend who's good with electronics have been trying to get rid of a nasty buzz and saturation, the trail led to these two chips and sure enough they were badly corroded. So now i am just looking for replacements. i seem to have found them, but will take a while shipping and a lot for P&P
I think you might find it worth while checking out Bo Deadly's suggestion in post #5 --
It looks as if there's a good chance you can use a THAT 2180 as a drop in replacement ...
Might be worth checking out the THAT data sheet notes on the control port drive impedance, which might require you modify the connections to pins 2 and 4 (see page 9 of the data sheet)