[sdiy] Grounding check (OT)

[Merlin Zener]

On Tue, 2003-09-23 at 02:50, dreichert at sympatico.ca wrote:
> Hi all,
> 
> This is a bit off topic, but I have a bit of a problem (maybe!)
> 
> I've plugged my bass into a used effects processor I just got 
> and when I play I'm feeling a mild sensation in my hands that 
> makes me suspect that something's not properly grounded. 
> 
> How can I check this for sure? I tried measuring the strings
> against the recepticle-ground with a voltmeter, which read
> nothing (both AC and DC). Am I doing this right or are there
> better checks?
> 

are you sure the power point ground is good?
What I'm saying is, maybe the problem is that the earth pin on the power
socket is not connected properly. Try the same test in another room [or
even another building(!)]

Another thing to check is continuity from the earth pin of the power
cable to the case of the unit. [And, come to think of it, leakage from
active and neutral to the case too...]

--
Merlin Zener
Piano, Synthesizer
Thailand.