I use an in-circuit esr tester to survey on-board elyticaps.
For a simple informative handheld audio display, I like Spectroid RTA analyzer.
This device should be a candidate for those who can program it for this application....
I can "see" an add-on blue tooth linked programmable device from the sound system to the video display for this purpose being do-able.
There are now far more powerful inexpensive processor modules to adapt for audio to video display, unfortunately outside my area of adeptness.
Indeed! You are first to pick up on it.
Had decades back thought about getting one of those Magnavox game consoles and figuring out how to modify...
As per post #14.
This amp should be derated during refurb to ensure the Peerless opt, if it's still good. Threads on this exist.
An a/v interface that can convert L/R to X/Y Lissajous, varying colours for audio frequencies and intensity to relative loudness.
In-circuit esr tester can be useful.
Thnx, haven't played either in decades.
Separate names with a comma.