That 10 second timer is probably just making people wait for a payoff that never comes, and YouTube will punish you once they click away faster on the back half. Six videos over 3 weeks on a small channel is way too small a sample to blame the trick and not just a lucky upload or two.

The "$12 multimeter" bit is the real lesson here. I keep a cheap one in my bag just for CMOS batteries and it has saved me more time than any fancy tool I own. First thing I do now is check the battery voltage, then look at the caps, then worry about RAM. If the board is older than five years, those two checks catch way more than reseating ever will. People skip them because yanking a stick feels like doing something, but a $2 battery swap beats 20 minutes of guessing every single time. Get in the habit of testing cheap stuff first and your tickets will go way faster.