If you’ve recently acquired a Blue Point MT596A digital multimeter—whether through a toolbox inheritance, an eBay purchase, or as part of a used Snap-on diagnostics kit—you have likely run into a common problem:
Turn off power circuits before connecting leads for resistance or continuity tests. blue point mt596a multimeter manual
Using any electrical testing tool requires strict adherence to safety guidelines to prevent personal injury or damage to the vehicle's electronic components. If you’ve recently acquired a Blue Point MT596A
Audibly confirms a continuous, unbroken path for electricity. an eBay purchase
If your MT596A has completely failed, consider replacing it with the modern Blue Point (which has a backlight and Bluetooth data logging). But for most technicians, the old MT596A will keep running for another decade.