ComodoComplex

Re: SA-3A (LA-3A Clone) Support Thread
« Reply #440 on: April 02, 2021, 01:40:29 AM »
Sliding some braided shielding cable over the power link wire did it for me without having to ground it or anything. I guess it creates enough of a faraday cage to stop radiated E-fields. It actually made no difference if I grounded it or not, and I secured heatshrink over the ends to make sure it couldn't short out on either side of the cable. I also had to cable-tie the assembly against a nearby cable to make sure the shield was squished down tight against the wiring to get rid of every last bit of hum, which is why I recommend using proper 3-4 conductor shielded cabling. Gotham 85225 cable would be luxurious, but you could also probably do with Mogami W2893 since the SA3A doesn't draw much current

This is what I used for shielding FYI:
https://www.mcmaster.com/shields/sleeving/interference-shielding-expandable-sleeving/

Hopefully can post some pix soon!


ComodoComplex

Re: SA-3A (LA-3A Clone) Support Thread
« Reply #441 on: April 02, 2021, 02:03:43 AM »
I think this worked! Gotta be a small small JPG

ComodoComplex

Re: SA-3A (LA-3A Clone) Support Thread
« Reply #442 on: April 02, 2021, 02:05:05 AM »
Close-up of the shielding for power link


 

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