I picked up a Pioneer PD-F1007 300-CD changer very cheaply without the remote, marked as "junk". It's cleaning up very well: most issues seem fixable with contact cleaning, cleaning optics, etc. The series has a reputation for forgetting the immense amount of programming that goes into storing CD details, and it seems to be a common thing to swap out C354, part PCH113 which is 0.1uF/5.5V. However, I can't find out its design discharge rate.
Others have suggested various EDLS replacements including the Eaton KW-5R5C104-R, but comparing their specs the recommended discharge rates vary from 50 uA to 75 mA.
On the one hand, I have a user manual which states the unit should not be connected to the switched outlet on an amplifier, presumably because it needs constant power. This suggests the supercap can only power the memory for a short time. On the other hand, an ancient online page at pioneerelectronics.com, says the memory backup is approx. 30 days.
The two capacitors I have ready access to are the NEC/TOKIN/Kemet FYH0H104ZF and FTW0H104ZF. The FY is rated at up to 500 uA. The FT at up to 50 mA, with a higher self-discharge. So I should pick the FY: less power, for way longer. Or am I wrong??
Programming the thing: since the initial programming effort is high, and there's a risk the unit will lose its mind from time to time anyway, I'd prefer to load the memory from a PC program via a keystroke emulator and a USB to PS/2 connection. As anyone seen/used anything like this? PC, Pi, Arduino etc. would all be OK with me. Decades ago there used to be a PC controller for the Sony CD changers, but the hardware dongle is long gone.
Others have suggested various EDLS replacements including the Eaton KW-5R5C104-R, but comparing their specs the recommended discharge rates vary from 50 uA to 75 mA.
On the one hand, I have a user manual which states the unit should not be connected to the switched outlet on an amplifier, presumably because it needs constant power. This suggests the supercap can only power the memory for a short time. On the other hand, an ancient online page at pioneerelectronics.com, says the memory backup is approx. 30 days.
The two capacitors I have ready access to are the NEC/TOKIN/Kemet FYH0H104ZF and FTW0H104ZF. The FY is rated at up to 500 uA. The FT at up to 50 mA, with a higher self-discharge. So I should pick the FY: less power, for way longer. Or am I wrong??
Programming the thing: since the initial programming effort is high, and there's a risk the unit will lose its mind from time to time anyway, I'd prefer to load the memory from a PC program via a keystroke emulator and a USB to PS/2 connection. As anyone seen/used anything like this? PC, Pi, Arduino etc. would all be OK with me. Decades ago there used to be a PC controller for the Sony CD changers, but the hardware dongle is long gone.
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