In article ,
albee wrote:

snip

The only thing we have to go on in evaluating one another's levels of
skill and experience in a given discipline, is the choice of words they
use. If a poster uses "voltage" when he means "current," or he refers to
every electrical problem as a "short," we can reasonably assume he's a
beginner.

So forgive me if I've underestimated you, with this rhetorical question,
meant as a self-test: Can you draw a schematic of a flashlight circuit,
which consists of a battery, a switch, and a bulb, and then, using your
VOM, troubleshoot the flashlight if it isn't working?

Would you be able to tell whether the bulb was burned out, the battery
was dead, the switch was bad, or if a connection or wire was faulty? (if
the latter, isolate it to a particular connection or the pair of
connections that represent two ends of a single conductor) If so, you're
already halfway to 'shooting your own heater, but apparently need a bit
more "theory." If not, I suggest you spend the weekend arming yourself
with that skill.