I'm kinda already known as the fix it guy. I freely repair/adjust the kid's bikes in the neighborhood. Nothing like the smile of a 6 year old after you fix their only form of transportation. Chains lubed and tightened, seats, handlebars and brakes adjusted, flats repaired, tires blown up. It's usually less than 10 minutes of work, but the appreciation last for days. And, it makes me feel good.
Anyway, dad was happy even though he hasn't used that stereo in about a decade. If it gets turned on twice more before he dies, it'd be a miracle.