Hope it works out for you.
You sound like you're about my age. Every corner dime-store had a tube tester and a cache of new TV/Radio vacuum tubes,
Radio Shack, Olsen Electronics, Heathkit, all close by and able to supply parts.
In those days we could open a chassis and easily get the parts we needed, now everything is, 'use it until it breaks, then throw it
away and buy a new one'.
My (adult) daughter asked me if the guys I work with were all as old as I am, because she told me she doesn't know anybody her
age who knows how to fix anything. I looked around the shop at work, .... she's right. No young people who do what I still do.
'Kids' nowadays believe they're smarter than us old folks because they're whiz-bangs at working the new hi-tech devices and us
old fogies aren't up-to-speed on them. But when something breaks, they gotta buy a new one, cause they have no idea how to fix the old one that crapped-out.
We may be dinosaurs, but I wouldn't trade what I know, for what little they know (and ALL that they don't).