• Please note that there are a few updates and clarifications made in the Audiokarma Rules, mostly relating to advertising and the addition of the new "Paying it Forward" & "Giving back" forums in the AudioKarma Audio Marketplace section.

Found a Simpson 260 Series 2 with a blown R16 resistor

zebulon1

zebulon1

Working on my own stuff. Finally
Subscriber
I added this series 2 to my collection. It was a TWA Tool Crib meter and the last cal date was in 1981. Two sets of leads were had as well. The R16, 11.5 ohm resister is blown. The meter has been replaced with a series 5 part.

Has any attempted repair on these meters?
I have several models and found the later ones fairly accessible but this series 2 is a little more detailed.

I am looking for original parts without buying whole meters.
 
Register to hide this ad
Greetings;

If you think repairing it useful again? not worth a plug nickel aside from display or rebuild it? for??....
 
This as why I asked the collective. The meter is only for my collection. I have Flukes out the wazoo. Its nice to know the set is complete and functional. Many guys prefer to use period equipment to repair the same vintage units. Need any more reasons?
 
Every tool at my disposal is operational. I appreciate the design and time spent on the function and ease of the design. The Simpson is very well made instrument and is at the top of my electronics collection.
 
I've got few Flukes, but sadly, only one analog meter, which is a Triplett 630.

Took a couple of days to go through it and essentially recalibrate the low ranges that I use the most and I'll tell you, that even with the Simpson's, these analogs come in handy when looking at **** like leaky caps.

But to each is own.

If the movement isn't original to the unit, why worry about replacing the resistor with a factory part?
 
I've got a Series 5, it's a handy little unit. For those who may not know, there is a whole website on the Simpson 260 http://www.simpson260.com/

I agree with xwarp, why sweat over the resistor being original?

The folks over at Antique Electronics Forum has a whole sub-forum on old test equipment and the Simpson 260 gets mentioned frequently. http://antiqueradios.com/forums/viewforum.php?f=8 .......I believe there was a thread a while back on rebuilding the meter on the 260.
 
zebulon1 said:
....The R16, 11.5 ohm resister is blown.
Click to expand...

gadget73 said:
PM incoming. I think I can help you with this.
Click to expand...

I've got one with a blown R16, 11.5 ohm too that I haven't gotten around to fixing. If either of you have a good source I'd appreciate the lead.

Edit - come to think of it I've got a 6P meter that's got a blown123.5 ohm resister which is what I'd really like to repair.
 
Last edited:
11.5 Ohms is a standard 1% value, available off-the-shelf from Mouser, Digikey, etc. 123.5 is not a standard value, but 124 Ohms is. Or use 121 and 2.49 in series.
 
I wanted to update this thread with the repaired Simpson Model 260, Series 2.
It was very enlightening, replacing the R16, 11.5 resistor. I have used these meters for years and only changing battery's was the extent of any maintenance I did. Back in 1983 when I was taught the use of Volt/Ohm Meter in A&P school, the Simpson was the lesson.

Member "gadget73" grayishly sent me a Series 2 parts unit, so I could replace the blown resistor with a original part. :ntwrthy:

When disassembling the meter to gain access to the resistor I realized how very well these meters were designed from the beginning. Well constructed and laid out in a small, simple package for the by gone day. Easy to repair and when coupled with the longevity and associated Models which only changed ever so slightly, made me really respect this wonderful piece of American design and engineering. Just think of all the things were repaired and made operational with these meters!

Some images of the Series 2. The TWA one is the Meter I wanted to return to original condition. A success due to one fine AK Member. :beerchug:

attachment.php


This was the donor unit below.

attachment.php
 

Attachments

  • Simpson 1.jpg
    Simpson 1.jpg
    85 KB · Views: 113
  • Simpson 3.jpg
    Simpson 3.jpg
    93.1 KB · Views: 112
Awesome, I'm glad you were able to make use of that.

I've got a small fleet of them myself. I have a Series 5 and a 7P at home, and I keep a Series 7 at work. The Series 7 I actually trash picked, and it was missing the battery flap. I bought the 7P for small coin off an AK member for parts, mostly the flap. When I got it, the meter was in fine shape except for the main case. The flap went onto the Series 7, and the Series 2 that Zebulon got gave up it's case for my 7P. The Series 2 had a bad meter movement, but the case was fine and fit a newer model. I just have no battery door, no big deal.
 
You must log in or register to reply here.
Back
Top Bottom