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Simpson digital multimeter 461-2R
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Simpson digital multimeter 461-2R

by wolf9545 on Sat Sep 18, 2010 9:38 pm

Let me just start by saying I do have a working and fully functional multimeter but I wanted to experiment with this one.

I just picked up a Simpson digital multimeter model 461-2R; came with the unit, ac adapter, and probes. The unit turns on the display works. If I set it to the ohms setting and touch the probes together the meter reads zero. If I set it to the DC Volts setting and try to read a battery the display becomes all funky (number jump around). They sometimes jump all around even if I just turn on the unit. After leaving the meter plugged into the wall for a few days the old Ni-Cd batteries (size AF, I am think they are mostly dead) does power the unit when un-plugged.

What I am wondering is if anyone has any experience with this meter, has the full users manual / service manual, or knows of any other website I can post this question on?

wolf9545
 
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Joined: Sat Sep 18, 2010 9:32 pm

Re: Simpson digital multimeter 461-2R

by tirso90 on Mon Mar 28, 2016 8:20 pm

change all electrolytics, even if they checked ok. next, change the oscillator crystal next to the large i.c.and last make sure you resolder all connections top and bottom.

tirso90
 
Posts: 1
Joined: Mon Mar 28, 2016 8:16 pm

Please be positive and constructive with your questions and comments.