At this point I have three 60 W HV supplies in hand:
- a failed ZYE MYJG60W-Y-1 (came with OMTech laser)
- an unbranded MYJG60W replacement from OMTech
- a Cloudray M60 (bought as a backup)
Inside, all three have identical PCBs with a prominent ZYE silkscreen legend, populated with seemingly identical components.
My guess is there’s only one ZYE factory (or a dozen clones) producing all the power supplies, then applying whatever sticker the order calls for on the case before dropping it in the carton.
Perhaps Cloudray buys more quality control than the anonymous “brands”, but I wouldn’t lay much money on finding more than two QC bins at the end of the assembly line: either it runs or it doesn’t.
Edit: Should the question come up, herewith pix of the PCBs:
You can verify they’re different PCBs by comparing the white silicone snot on the transformers …