Moog Music Forum

Has this been noticed on a Stage I with the previous OS, whatever that may be?

I had the same problem with the old operating system and also using headphones but the variation of parameters was less extensive than what happens with OS 2.0
What are the tips you gave Amos?
The solution of the problem is hardware or software?
Regards
Emidio

I have seen two causes for this problem.

1) bad earth/ground connection. There are devices which can test the earth ground connection of your electrical outlets. Use one to make sure this is good. Also, the power cord you are using with the LP could have a bad ground connection. This can be tested with a multimeter set to measure Ohms of resistance (between the center/ground pin on the plug end, and the corresponding hole on the IEC socket end of the cable). Less than one Ohm resistance is to be expected on a good cable). If all of these things are OK, then either the chassis ground connection inside the LP is suspect, or the problem has another cause, such as:

2) stray voltage on the ground wire of your audio cable. I've seen this also. Unplug the audio lead from your LP audio output (leave the cable connected to the rest of your system, just unplug the LP end) -- measure between the tip and sleeve contacts on the audio plug using a voltmeter; test both AC and DC volts. There should be no voltage, AC or DC, measured here. If there is, then it indicates an electrical fault somewhere in your audio system which is affecting the LP.

Cheers,

Amos

What a guy to have on our side...

I'm waiting to hear:

"Amos my LP spontaneously exploded into several dozen pieces, WHY?"

voodoochilimoog wrote:What a guy to have on our side...

I'm waiting to hear:

"Amos my LP spontaneously exploded into several dozen pieces, WHY?"

I wonder if spontaneous combustion is covered under warranty...