shortracket 90

[Al1234]

Hi everyone, I was wondering if anyone has information on the shortracker 90 lead. I was watching a video on it and it suggested that it follows temperature! is the tip a temperature sensor or an electromagnetic sensor like current tracer or circuit trackers?
would it be too much trouble to ask for the schematics of the shortracker lead. Please

[jvthorsley]

Hi
Are you referring one of the Polar ToneOhm 950 leads?

[Al1234]

Hi, thanks for ykur reply,
No, it's this one
https://share.google/H3odMpVR37fEK7fJ9

[jvthorsley]

Hi
This looks like a Current Probe.
A Fluxgate Magnetometer Probe.
See details I have attached .
Very useful for non-contact probing & measuring current on a switch mode power supply.
And for tracing current in copper track on a circuit board.
Its the Aim Instruments I-Prober 520.
It attaches to an Oscilloscope so you can see what's happening on a switch mode P.S.U.
And make measurements.

[Al1234]

Hi thank you for both suggestions. I have toneohm 950 with shop probes and oem probes.
I got the shortracker 90 without probe and I am getting tired of looking at it. I'ld like to get it working.

Do you know if I-prober 520 can help with a hi resistance short between 525-750 ohms? 750 when redhead is on + supply, 525 when red lead is on - or ground...

Toneohm 950 and thermal camera (Flir T400), did not help.
My favorite the ProTrack shows kind of a bad diode or a bad zener diode accross + & - of a 5vdc on all ICs supply on this bus. Only if I had a good baord to compare with... But new board is 3.8k and used over $1k. Good thing this is a shops board so I am not in a hurry.

I appreciate your help and replys. Thank you jvthorsley

[jvthorsley]

Hi
Might be necessary to unhook the Diodes on one side one at a time until your ProTrack shows a less suspect trace.
Also suspect Tantalum Capacitors & Electrolytics.
Although when a Tant Cap fails you can usually smell it!