/diy/ - Do It Yourself

>>1696347
>do I NEED both probes when working on the VCR or is one enough?

you dont need any probes. if you keep it short, just some hookup wire soldered to paper clips at both ends make absolutely fine scope probes.
at the probe end, file the paperclip into a needle point to punch thru flux on a PCB and thru wire insulation.

>>1696399
>This is likely where the hum is coming from.

looks like there's a boost converter near the jacks to power the tube, maybe. that would be a likely cause of massive EM noise in an low-level amplifier.
anyway, it's a meme tube amp for retard hipsters, and shouldnt occupy our attention for more than a few seconds.