bigmessowires
Well-known member
Thanks for the suggestion! The desolder and resolder is something you're doing pretty routinely on your boards to fix power-up problems? I probably won't try that on this IIsi board, because I'm running out of patience with it and I'd be afraid of accidentally making things worse rather than better, but it's a good idea to keep in reserve if I need it.
I was able to test my idea of replacing R115 without actually modifying the board, by connecting a diode and 1K resistor between +5V and PFW on the PDS slot. That doesn't actually replace R115, but it puts another resistor in parallel with it, lowering the overall resistance. Though it's not the "right" solution, it works fine with my FET-based soft power circuit and ATX PSU. We'll see what happens with the original PSU once it's recapped.
I was able to test my idea of replacing R115 without actually modifying the board, by connecting a diode and 1K resistor between +5V and PFW on the PDS slot. That doesn't actually replace R115, but it puts another resistor in parallel with it, lowering the overall resistance. Though it's not the "right" solution, it works fine with my FET-based soft power circuit and ATX PSU. We'll see what happens with the original PSU once it's recapped.