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ISO Test analyzer
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fant:
I have an HT M70 isotest.
On the low ohm range the reading is changing reading by reading, with the probes shorted once it indicates 5,38 Ohm, the following 15,87 Ohm, the third 4,77 and so on.
Changed the four relays inside ( they select the range and function ) but no improvement.
Anybody has schematics or service manual.
I have the user manual but no help.

Thank you in advance
AVGresponding:
Have you tried swapping the leads? It's not unusual for them to go bad over time, even good quality silicone ones.
fant:
done everything is possible, changed terminals, cleaned the PCB with HPA, changed the relays, made some new soldering where solder is matt, checked some voltages, everything is OK, but it is not working.
For this reason I need the schematics and/or service manual.

Thanks in advance
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