
Get your connectors and project box ready.

Using a de-solder tool and your solder pin, simply un solder the 4 legs and remove. Some look different but they are easy to spot. The big square thing on the modem is the isolation transformer you want to remove.

They are mostly the same and are 1:1 ratio 600 ohm. You will be using the modems isolation transformer since its perfect for our intended use.
#4 channel ground loop isolator full
I have a box full of old PC parts and it was no problem for me to locate them. I had everything I needed to build one in various boxes around the basement and it took me about 30 minutes to assemble.įind 2 old PC modems. It is possible to make one if you have enough junk around the house like I do. Today is Sunday, everything is closed, and I don’t feel like waiting a week for an online order. These can be purchased for less than $15 online or from an electronics store. This is accomplished with a “Ground Loop Isolator”. To eliminate this, you need to somehow separate the grounds so that there is no fighting for ground between the electronics. The voltage was back feeding from the video ground of the projector through the PS2 audio grounds and then to my stereo. Surprisingly, the noise was not between my PS2 and the stereo. I could hear a horrendous squeal in my speakers that was as loud as the normal games sounds. I ran into this problem when I connected a PlayStation 2 video game system to my home stereo and a DLP projector. The voltage difference can be heard as a buzz or squeal in the speakers and if its large enough, it can damage your equipment. This situation can occur when you have two or more electronic devices interconnected by either video or audio cables and they develop a slight electrical difference in their grounding with the power system.

90% of it is probably the result of a “Ground Loop” as was in my case. Eliminating buzzing and high pitch squeals in your home audio equipment can be a pain.
