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Author Topic: Had A Shocking Experience  (Read 11573 times)

Jamin Lynch

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Re: Had A Shocking Experiecne
« Reply #10 on: February 22, 2017, 09:05:14 PM »

DC rail voltage? They didn't have any boxes with smoked cone speaker/s anywhere?
A dumpster can be a quick solution.   Carry a VOM with you.   Very handy for testing.

I usually have a meter. Just not with me at the time.
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Ivan Beaver

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Re: Had A Shocking Experiecne
« Reply #11 on: February 22, 2017, 09:05:54 PM »

DC rail voltage? They didn't have any boxes with smoked cone speaker/s anywhere?
A dumpster can be a quick solution.   Carry a VOM with you.   Very handy for testing.
I can't remember anytime I went on a service call that I did not take my VOM.

There is quite a lot you can find out with it-is voltage present? what type and how much?

Is there any resistance-either on a loudspeaker or a shorted or open speaker cable or drive line.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

Jamin Lynch

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Re: Had A Shocking Experiecne
« Reply #12 on: February 22, 2017, 09:12:59 PM »

I can't remember anytime I went on a service call that I did not take my VOM.

There is quite a lot you can find out with it-is voltage present? what type and how much?

Is there any resistance-either on a loudspeaker or a shorted or open speaker cable or drive line.

I usually have one in my tool box, but it was at the shop. I would had to of driven all the way across town to get it. The church was close by...tool box not so much.

And before anybody says I should always have my tool box on hand  ;) I was not in service call mood at the time. I was on a different mission when the call came in
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Scott Holtzman

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Re: Had A Shocking Experiecne
« Reply #13 on: February 22, 2017, 10:40:00 PM »

I usually have one in my tool box, but it was at the shop. I would had to of driven all the way across town to get it. The church was close by...tool box not so much.

And before anybody says I should always have my tool box on hand  ;) I was not in service call mood at the time. I was on a different mission when the call came in




ROFL laughing only on this forum can you get your balls busted for not bringing your tools.  A DC shock feels a lot different than an AC shock.


I have been hit with plate voltage a few times.  That will get your attention.

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Scott AKA "Skyking" Holtzman

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Jamin Lynch

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Re: Had A Shocking Experiecne
« Reply #14 on: February 22, 2017, 10:45:56 PM »




ROFL laughing only on this forum can you get your balls busted for not bringing your tools.  A DC shock feels a lot different than an AC shock.


I have been hit with plate voltage a few times.  That will get your attention.

Sometimes you just have to work with what you got.

But I was really super duper careful  ;D

It was one of those "you had to be there" things
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Tim McCulloch

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Re: Had A Shocking Experiecne
« Reply #15 on: February 23, 2017, 01:05:24 AM »

Without jumping on the dog pile...  I'm with those who think there was something else going on or at least contributing to your shock.
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Jamin Lynch

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Re: Had A Shocking Experiecne
« Reply #16 on: February 23, 2017, 04:36:37 AM »

Without jumping on the dog pile...  I'm with those who think there was something else going on or at least contributing to your shock.

The building lights only dimmed a little  ;)
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Ivan Beaver

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Re: Had A Shocking Experiecne
« Reply #17 on: February 23, 2017, 07:23:12 AM »




ROFL laughing only on this forum can you get your balls busted for not bringing your tools.  A DC shock feels a lot different than an AC shock.


I have been hit with plate voltage a few times.  That will get your attention.
I think the worst "shock" I ever got was when I got ahold of a subcycle  generator output for the telephone system for a large office building. 

It provided the ringing voltage for the phones.

It is 90V @20hz.

It was not so much the voltage-but the freq.  I could feel my bones banging against each other.

The second anode of an tube TV will "wake you up" also.
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Ivan Beaver
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Scott Holtzman

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Re: Had A Shocking Experiecne
« Reply #18 on: February 23, 2017, 09:59:34 AM »

I think the worst "shock" I ever got was when I got ahold of a subcycle  generator output for the telephone system for a large office building. 

It provided the ringing voltage for the phones.

It is 90V @20hz.

It was not so much the voltage-but the freq.  I could feel my bones banging against each other.

The second anode of an tube TV will "wake you up" also.


I have never got on an office side ring generator in a step office.  That would have to bite.


What Ivan is talking about is regular phone line uses office battery -48v to provide a current loop for the microphone and earpiece.  AC of 90Hz is sent to fire off the ringer.  Even after a few miles of cable it still bites.  It's much worse in the office.


In electro-mechanical offices there was a single ring generator.  It was an AC generator and a ring bus was run between the frames.  In the newer electronic offices this was replaced by a single switcher type power supply of standard frame height and no moving parts.  Lot less current too.



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Scott AKA "Skyking" Holtzman

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John Roberts {JR}

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Re: Had A Shocking Experiecne
« Reply #19 on: February 23, 2017, 10:57:41 AM »

NCVT is your friend.

If amp is broken and energizing it's chassis-output cut off the line cord.

JR
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Re: Had A Shocking Experiecne
« Reply #19 on: February 23, 2017, 10:57:41 AM »


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