P4400 'KILL-A-WATT' Meter

I have a P4400 KILL A WATT meter always plugged in here at my COMMS console at my house...

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My meter is now reading high AC voltage of 136.4 VAC. It has been reading around 128 VAC here at the house and recently I have started seeing it creep up. I always thought that was high and using my FLUKE 77 work multimeter today I see the actual AC voltage is 118.2... I walked around the house 120V Receptacles and the AC Voltage using my FLUKE 77 meter all read around the 118VAC reading...

I am guess the calibration of the KILL A WATT has gone bad for me...

I made a couple of AC AMPS readings that agreed between the two meters so that part of the P4400 is working ok...

I see they only cost around $17 from AMAZON so guess I will order another one.

I did watch a VIDEO someone made troubleshooting a bad P4400 and he opened it all up and found a blown fuse. I did not see any calibration pots anywhere in the video...

Maybe I should get a different AC VOLTMETER to constantly monitor my 120VAC here in my comms room...

I have one these in POPUP trailer so i think I will order another for use in here...

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Roy Ken