Anyone have a QUICK source for the 70VDC switching supply?

One failed in our customers machine and while I didn't have time to check it carefully on Saturday I strongly suspect the fan failed. Will post followup tomorrow once I have examined it on the bench, but the primary bridge rectifier looks like it ran rather hot - enough to melt the solder so it could lift out of the PCB leading to arcing and major trace failure...

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Having trouble finding a 70VDC supply that is rated UL, not to mention one that will work at 115VAC.

Thanks for the link, MeanWell is UL as well as CUL approved, which meats Canadian electrical safety laws which are stricter than the UL alone for fire risk...will be digging into the supply today and I will test the fan first.

Hi Ken,

You should have dropped by our little (only 5,500sq ft) shop here in Burnaby while we had the Alien in testing mode. We aren't that far away - about 195 miles due north of you.

There are a few things in the game you wouldn't have seen before. Like the game was originally wired for a 70VAC supply source - transformer based I assume - and they switched to a 70VDC CNC style power supply after the initial fuse/rectifier/regulator PCB design was laid out.

John :-#)#

Further exploration of the blown supply. The fan appears to be just fine. I've had it running on the bench for about twenty minutes and it is good and strong, and it also turns freely by finger when off.
I'm back to a bad solder connection for either the bridge rectifier or one of the filter caps...

This supply is beyond normal repair, and I did find what appear to be good quality ones here https://www.aliexpress.com/item/Professional-DC-Power-Supply-70V-7A-500w-Led-Driver-Transformer-SMPS-for-Engraving-machine-laser-cutting/32812372400.html What I liked was it claims to meet proper international electrical standards, and that is rare in these units. Price isn't bad either.

I may restore the burnt supply, but with the badly charred PCB it is not a good candidate for anything other than for testing purposes. Certainly can't be good enough after being repaired to be running in any game again.

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