Hello, I'm a DIY guy that gets things fixed if I have some guidance. A used Yamaha aw1600 Digital Multitrack that I own [purchased in this condition for parts or repair ], has a specific startup issue. It takes approx. 4 times pushing ON to get startup, then the machine operates as intended. After software shutdown and power OFF, it will not restart.
Unplugging everything and waiting for voltage of PSU to go to 0.00 (takes 1hr+-) to stabilize. The startup can be repeated with 4+- push of ON.
This is a very repeatable condition, not intermittent, and all connections appear to be intact. No intermittents, "open" pin to ground. Ground to barrel 0.00 ohms. Initial measurements appear fine on aw1600.
External PSU DC Voltage Out = 16.25VDC, no load. Reads 16.25VDC after Shutdown, ( unplugged from AC ), then drops slowly as expected. The PSU is KFD [ KFD AC/DC Adapter Model A45-2-160002500 Energy Efficiency VI ].
The original Yamaha PA-300 PSU's are mostly unavailable and/or costly.
Yamaha are unable to support . I'm hoping to find additional guidance on this Forum. Thanks in Advance, Ron
Unplugging everything and waiting for voltage of PSU to go to 0.00 (takes 1hr+-) to stabilize. The startup can be repeated with 4+- push of ON.
This is a very repeatable condition, not intermittent, and all connections appear to be intact. No intermittents, "open" pin to ground. Ground to barrel 0.00 ohms. Initial measurements appear fine on aw1600.
External PSU DC Voltage Out = 16.25VDC, no load. Reads 16.25VDC after Shutdown, ( unplugged from AC ), then drops slowly as expected. The PSU is KFD [ KFD AC/DC Adapter Model A45-2-160002500 Energy Efficiency VI ].
The original Yamaha PA-300 PSU's are mostly unavailable and/or costly.
Yamaha are unable to support . I'm hoping to find additional guidance on this Forum. Thanks in Advance, Ron