Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: billcreller on March 09, 2015, 10:29:58 pm

Title: meter fuse
Post by: billcreller on March 09, 2015, 10:29:58 pm

So, I've had the Radio Shack digital meter for a long time, and it always worked good.  Comparing it's accuracy with other digital meters has shown it to be very good for a low-priced meter.

Then, one day the ohms scales wouldn't work.  I figured it was at the end of its useful life ! :think1:   I actually held it over the trash can to toss it, but decided to check it out.
 Replaced the batteries....still no workie....
Then I checked the two mini tubular fuses near the batteries.....one was open !!
So with that one jumped, the meter worked.  So then, where in hell do I get fuses like that ?  Internet search showed a bunch  of places, and I picked Allied.  Ordered a couple fuses.  Then noticed that they handled AMP brand wire lugs & crimper tools ( luggers)  So I bought some "butt connects", to make the shipping worth while.  Amp stuff is approved for aircraft wiring, so ......I have to use it...
Now waiting for the parts.....

Title: Re: meter fuse
Post by: billcreller on March 10, 2015, 11:41:24 pm

So, the meter works normal now!!  Another fine repair job completed ! :icon_biggrin:   Yeah, I know, I need to  get a life ! :think1:

Title: Re: meter fuse
Post by: sluckey on March 11, 2015, 06:35:29 am

We need pictures!   :icon_biggrin:

Title: Re: meter fuse
Post by: eleventeen on March 24, 2015, 01:59:35 pm

Many Fluke meters use "fusible resistors", there's generally one right on the input. They look pretty much just like an ordinary resistor. I have a model 12 as an extra over and above my trusty model 77. I don't really like it, but it works and I bot it cheap, for $25. Anyway, the fusible resistor went out, opened up. I replaced it with an ordinary resistor of the same value as the FR and the meter starting working again. I guess I may blow it up someday.