What's up guys? I'm new here, and I just have a very simple question that I simply can't get the answer to.
I have 1950 television, and I'm redoing it just slightly. I'll leave the details out, but in short I redid the power supply a little bit.
Now, I left the original wiring mostly intact, and soldered the new power wires exactly where the old ones were. But (stupidly), I never took voltage measurements of the case with the old wiring. Basically, I'm paranoid of touching the case while it's on (which is necessary to adjust any of the picture settings - the knobs are all metallic), as I don't want to get fried. With the old wiring, I never got any sort of shock. And the new wiring is identical, at least I'm almost sure it is. But here's what's confusing me:
When I hook up the red wire of my multimeter to a wire I know is hot and the black one to the other wire for the power supply, it reads 120V (normal). When I hook up the red to hot, and the black wire to any part of the casing, it reads somewhere in the 30 volt region (but it fluctuates wildly). Why is this!? What should it read when I hook the red to hot and the black to the case/knobs?
I've heard differing opinions. Some people say that if the case is grounded, it should give a voltage reading. Others say that if this happens, you'll get shocked if you simply touch the case. What's the right answer?
Thanks guys
I have 1950 television, and I'm redoing it just slightly. I'll leave the details out, but in short I redid the power supply a little bit.
Now, I left the original wiring mostly intact, and soldered the new power wires exactly where the old ones were. But (stupidly), I never took voltage measurements of the case with the old wiring. Basically, I'm paranoid of touching the case while it's on (which is necessary to adjust any of the picture settings - the knobs are all metallic), as I don't want to get fried. With the old wiring, I never got any sort of shock. And the new wiring is identical, at least I'm almost sure it is. But here's what's confusing me:
When I hook up the red wire of my multimeter to a wire I know is hot and the black one to the other wire for the power supply, it reads 120V (normal). When I hook up the red to hot, and the black wire to any part of the casing, it reads somewhere in the 30 volt region (but it fluctuates wildly). Why is this!? What should it read when I hook the red to hot and the black to the case/knobs?
I've heard differing opinions. Some people say that if the case is grounded, it should give a voltage reading. Others say that if this happens, you'll get shocked if you simply touch the case. What's the right answer?
Thanks guys