I have an old Mackie 1202 - 1st gen. I have a problem with headphone amp being out of phase left right and suspect a NJM4560S SIP Chip is bad.
The chips are marked NJM4560S which is a 9pin chip. When looking online , The NJM4560L is shown as the only SIP version and its an 8 pin chip with different pins used from the Mackie 1202 schematic. Small bear has a 9pin chip but no info and so far I have not found a 9 pin version with data sheet.
Any info would help. I have a schematic for the output side showing the headphone circuit
The chips are marked NJM4560S which is a 9pin chip. When looking online , The NJM4560L is shown as the only SIP version and its an 8 pin chip with different pins used from the Mackie 1202 schematic. Small bear has a 9pin chip but no info and so far I have not found a 9 pin version with data sheet.
Any info would help. I have a schematic for the output side showing the headphone circuit