[Jukebox-list] Amp meter was Wurlitzer 2410S problem

[Joey McDonald]

Any multimeter that is capable of measuring amps 
should be fused internal.

I use a Fluke 189 meter that is fused 20 amps.
I always test the ckt for shorts with a fused 15amp  jumper first
before hooking up the meter. This saves $$$ in fuses.
Fluke meter fuses can get expensive. 

I was listening in on this disussion 
when I thought I would add my 2 cents worth.

I spend a lot of time tracing ckts for shorts.
I am GM tech and do electrical repairs all day long.
You would be amazed at the source for shorts
that I find everyday.
The multimeter should be used to measure current draw
not to find shorts. There is no need to measure current draw
on a shorted ckt. Repair the short then measure current draw
to see if it is within spec.

The lamp idea is an old tried and true way to find a short.
Also using a ckt breaker is a cheap tool and works well.
If a ckt has many branches that run off 1 fuse, isolate ckts
by adding fuses to each branch. Then trace the isolated ckt for the source
of the short. Leave the extra installed fuses in place. They will
only help in future diagnosis if needed.

There is also many inductive volt tracers now that can be 
bought for arounbd $25. Guide it along the ckt and when
the lite stops flashing or changes colour is where the voltage stops.
BINGO. You found the short.

Finding a shorted ckt should not be too hard to diagnose.
Finding intermittent shorts requires the thinking cap.

Hope this ramble helps someone.

Joey McDonald