Calibration?

[1Justin]

If it's useful. I've just today done a "6 monthly" connector clean-out and am, as always, impressed by the difference.

Fill the connectors with IPA* from a spray can, then scrub out with interdental brushes which can get right inside the banana plug sockets (The fatter ones from Tepe brand do a nice job). Black gunk can come out if it's been a busy tester. Blow them out hard and leave to dry.
*Isopropyl alcohol, - not the type many of us favour on a Friday.

I always find that when the ohms scale zero point has been been wandering about, or variable with twisting of connectors, it becomes pretty much rock solid after this.

I have in the past experimented with a teeny squeeze of Contra-Lube, which creates fantastic results in the short term, but possibly attracts more dirt in the longer term, so I'm unsure about this one for instrument connectors.

 

[Kate]

I spoke to a rep from Meggar yesterday Turns out my leads are just old and the cage mechanism with the lead that holds the probe in place had become weak and wasn't providing a proper contact. They advise replacing yearly. So they gave me two free sets
I also had them calibrated by acutest. They did a fabulous job, amazing friendly customer service so they are my go to from now on.
They took a look at my old tester and it was in need of repair. (Not worth the money) so I would like to know how it passed the last calibration. I never trusted it had been done properly, and it has sat unused since

 

[sparkdog]

Have used OSCS Mike Olding for years.Always very good service even if I send it to him. I usually send by special delivery royal mail.

 

[PEG]

I spoke to a rep from Meggar yesterday Turns out my leads are just old and the cage mechanism with the lead that holds the probe in place had become weak and wasn't providing a proper contact. They advise replacing yearly. So they gave me two free sets
I also had them calibrated by acutest. They did a fabulous job, amazing friendly customer service so they are my go to from now on.
They took a look at my old tester and it was in need of repair. (Not worth the money) so I would like to know how it passed the last calibration. I never trusted it had been done properly, and it has sat unused since

Sounds like you got decent service from the two Although ready and wary of poor attention from large institutions,i have always found Megger to be excellent.

Just out of interest,how did you ascertain that a "knock" gave alternate readings? It was something me nan always administered to any recalcitrant mechanical or electrical device,in order to achieve obedience,which,of course,i am not suggesting ...

 

[Kate]

Sounds like you got decent service from the two Although ready and wary of poor attention from large institutions,i have always found Megger to be excellent.

Just out of interest,how did you ascertain that a "knock" gave alternate readings? It was something me nan always administered to any recalcitrant mechanical or electrical device,in order to achieve obedience,which,of course,i am not suggesting ...

Seemed to change from walking around, strap around neck so probably bounced on my tummy
Tested it by tapping where the leads connect to the tester...it changed the reading!