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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Testing circuits for ground problemsPosted by drdna on: 11/15/2020
 Romy the Cat wrote:
Let leave aside the probability that you specific PP is defective. If it is then all bets are off.

Completely agree. And I will say from the forum members here who have a problem, Pure Power usually seem to be an internal defect. It is supported by the simple fact that WHEN your repaired/replaced unit arrives, the problem is gone.

 Romy the Cat wrote:
If you have no problem with noise with the rest of you system but only your phonostage then it is most likely the problem with your phonostage.
Still, the phonostage can be notorious for amplifying any problems that exist. It is just the nature of it.  

 Romy the Cat wrote:
Solder 10-15 inch 10Ga wire to you negative grounded terminal. Then begin to touch diligent points of you circuitry with other sides of your wire. You very fast will find how to bridge you ground in order to get rid of you noise. You might hold that wire in hands and just short different pars of grounds, but your hands might act as own antenna.

This is a genius-level idea! It probably would have saved me many hours of re-flowing solder joints -- ROMY, you just made one of the crowning jewel comments of GoodSoundClub! 
(Obviously, please disconnect the electricity and drain all capacitors before soldering. Also, make sure you are testing only ground points!)

Adrian

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