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RE: Zerozone 100VA PSU Fuse Issue

I assume the Xfinity X1 box has a male input power inlet connector on the back to feed the DC power to the unit. Can you buy a cheap power cable with the power ends needed to feed the Xfinity X1 box from the DC power supply?

You could buy a cheap inline fuse holder and install it in series with the B+ DC power line of the cable. Install a 3 amp fuse and see if it blows after a couple months of use. If it blows then that would mean, imo, there is a problem with the Xfinity X1 box. If on the other hand the 1.6 amp AC line fuse on the power supply blows again, and not the 3 amp fuse installed on the DC power cord, the problem is with the power supply.


Food for thought. For the 1.6 amp AC line fuse to blow it takes 192 watts, VA, of power (1.6A X 120Vac = 192VA, watts), being consumed in the primary and secondary winding for a sufficient steady length of time, (see fuse manufacture's specs),for the element in the fuse to melt blowing the fuse.

For a transformer, Power in = Power out, minus losses.


Edits: 07/25/17
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