I've been an Amateur Radio operator for 40 years this year.
1) In that time I have built enough Heathkits to qualify for their Master Builder status.
2) I have built an OHR 20/40 Classic, a PFR-3A and many other non-Heathkits as well. Probably so many kits that I can't remember them all In all that time, I have never built a kit that didn't work; or that I was not able to get to function.
3) I have built a K1, K2, KX3 and K3.
4) I worked for 22 years for Sinar Bron, Inc. performing component level repairs on multi thousand dollar professional studio strobes. I worked on equipment that was powered both by 120V and 220V AC and that stored up to 6400 Joules of flash energy. I started out as a bench tech and worked my way up to Service Manager after graduating from DeVry with a degree in Digital Electronics.
So why does the thought of opening up and replacing the battery in my daughter's iPhone 6 make my hands sweat? I think mainly, the thought of screwing something up and disappointing a person that I would give up my life for.
Ahhhh, the joys of Fatherhood.
72 de Larry W2LJ
QRP - When you care to send the very least!