Helping you relatives is still good public relations.
Hey, I just look at it as all part of my chosen way of life. Tell your relatives to contact me... ha ha If it is broke I will fix it - Of course they have to pay my regular fees. (They aren't MY relatives.)
"Toaster? No problem... there you go, FIXED... That will be US$130 please."
But seriously I never care about such questions... I can fix about anything, whether it is a toaster, laser projector, VCR, Stereo, nuclear reactors or HV Power Supplies mentioned above, so if I have the time, I go ahead and fix whatever it is. (It only takes a few minutes and is great P.R.).
Also I am upfront and tell them I will fix it for such and such price. You can give them a discount, and still not be working for free.
If it is not worth the time fixing it, I will tell them that, truthfully. Or I might say, "I don't have the time, but I can give that to one of the techs I work with."
This, of course, means they will have to pay to get it fixed, since, to the other techs, they are just another customer. I don't really think of it as being a bad guy. Like you, I don't have the time to fix all the world's problems.
Maybe this will help. Something I try to do when possible is let them do the work, not me. Tell them, "Take the cover off..-there are five or six screws on the bottom, and get my small tool bag from...(wherever)" That way I can take a quick look at it without wasting an hour, and tell them, "OK, here is the problem - You need to get this and this and this parts at (...Newark Electronics, Radio Shack, wherever..), and I will put them in for you." Then they can put it back together.
Or when it is a software probelm, I tell them if they need to reload the program, rerun Windows setup, or whatever.
The ones that are total "idiots" when it comes to technology are the biggest problem. It takes a little time to even tell them how to do it, even if I don't have to do it all myself. But as I mentioned before, it is good public relations, and often results in more business.
Displaying properly, now.
No dates were showing, before, but now it is much better. - Oh, well, looks like a couple posts after all... (chuckle)