Diagnosing Beogram 4004 hum

in BeoGram · Sept 19, 2025 15:43 GMT

Thanks for the help! I'll see if I can spend some time this weekend taking a look. To clarify, the second image is showing the desired end result / wiring where the plug housing (black wire) is tied to Pin 2 (shield wire…

Diagnosing Beogram 4004 hum

in BeoGram · Sept 18, 2025 16:57 GMT

I've taken on a project to get my father-in-law's well-cared-for Beogram 4004 up and I'm running into an annoying hum that only seems to show up with my nicer phono preamp. I'm already expecting this to be potentially ex…