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VTVM meter moves when my hand is next to it & not on
#1

This is strange to me.  Maybe in over 50 years of working around swinging, analog meters I just never saw this, I have missed other things also along the way.
  This morning I unboxed a V7 Heathkit and began investing it's innards.  Looks clean has a dead carbon zink battery, not leaking yet? pulled it quickly.  Noticed the 3 capacitors are original, so I plan to replace them check tubes and replaced the half weak 12au7.
Noticing the meter not setting on Zero, I decided to set it on zero.  When I place my hand on the case to support it while I twist the adjustment screw the needle moves.  I set the needle to zero but when I move my hand away the needle moves away from zero.  Tricky little guy!  So I don't put my hands close to the meter, instead l use a long screwdriver and zero the meter.  With the meter set at zero I place my hand next to the meter and it jumps up swinging rather high stays up until I bring my hand back.  It doesn't return to zero when it comes to rest.  This is with no power on.[attachment=32248]
Bruce B
#2

Any metal/magnetic things IN or ON your hand?
Or it is on high sensitivity limit, and measures charge on you? Or on AC and measure somehow the signal through your capacitance?

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

No, I,m explaining it is turned off, not plugged in.  Its not measuring anything!  I don't have metal in my hand and I have moved my hand over several other meters I own without anything happening.
I have been trying to post a video but it keeps quiting at 21% so I will put this link in here and you can see what's going on.
https://photos.app.goo.gl/6tYYT8y3x3zSG1if7
Bruce B
#4

That's static electricity. Take a used fabric softener dryer sheet and wipe the dial cover then discharge your body to the nearest earth ground (or is it vice-versa?). You can now set the pointer to zero. Happens a lot in the winter-spring. Keep the dryer sheet close by.
#5

Thanks Bob,
I was kinda figuring on that, but I have never seen anything like this guy does.  It's inability to come back to rest at the same point is strange.    I will see to the un-static sate of being for me and the meter, then I will try again.  I'm going to recap it tomorrow and calibrate.  I will then put it on the shelf as I really didn't need it, but $6, you know....
#6

Can't turn that deal down.
#7

It's  okay because my wife hoards yarn, so one more piece of radio rest equipment is ok too




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