mach3 wont reset keeps saying external emg stop requested

[dazp1976]

There is NO misunderstanding Kit we know this very well, the point was why use an oversized PSU that costs more money when not coming close to using the maximum output of the original.?
Regards your and DazP # of PSU's, which was the other point of my objection, you are still producing heat and burning electricity that isn't required. Heat is the enemy of electronics so anything that lowers it can only be good.!

. . . . Next you will all be telling people Bigger steppers are better.!

Nooooooo. Bigger steppers are crap! unless you supply them with a very large voltage. Especially those 1700oz things with 8mh inductance from China. Seen a few make that mistake.

As for the PSU I don't see many of them that have failed unless they're running close to or over capacity. If the machine has car type relays in use and/or a few of them, then they may suck life out of it. If this is the case you're either replacing all the relays or going with a bigger supply (what's cheaper). (At least I only went 38w more! lol) Trace your wires and check what's in use.

[cropwell]

My point about automotive relays is that they draw a lot of current, some of them nearly 1 amp. That may damage the electronics that feed the coil. I am not concerned about PSU capacities, more than the BoB. In this case I do not know where the relay is fed from.

In fact I have spotted two of the little buggers in the photos, there may be more.