English Amiga Board - View Single Post - Super frustrated with A1200 resetting in some weird cases

SpocksBeer · 16 January 2019, 02:42

Standard advice, at least as far as I can see recently, is that the stability (low ripple) of the 5V power rail is critical to Amigas running well. Doubly so with any accelerators present. You won't be able to detect an unstable 5V rail with a multimeter in most cases, only your oscilloscope, and only when the PSU is under load.

Given when you reduce the overall power requirements of the A1200 by removing the accelerator things improve, I'd say you're on the right track with your replacement PSU.

I feel your pain, and good luck.

16 January 2019, 02:42	#2
SpocksBeer Registered User Join Date: Nov 2018 Location: Hobart Posts: 61	Standard advice, at least as far as I can see recently, is that the stability (low ripple) of the 5V power rail is critical to Amigas running well. Doubly so with any accelerators present. You won't be able to detect an unstable 5V rail with a multimeter in most cases, only your oscilloscope, and only when the PSU is under load. Given when you reduce the overall power requirements of the A1200 by removing the accelerator things improve, I'd say you're on the right track with your replacement PSU. I feel your pain, and good luck.