MSP 3140 strike failure

[Doug B]

If you open the covers it has magnets that deactivate the machine

  This may be true but a capacitor can hold a charge for months.

[mk162]

If you open the covers it has magnets that deactivate the machine

  This may be true but a capacitor can hold a charge for months.

They sure can.  No matter how old I always treat them as charged.

[inkman996]

Its recommended to use a resistor of a certain size on a wire between the two terminals to discharge one, but I always just use a screw driver for the pretty arc it gives off.

[T Shirt Farmer]

If you open the covers it has magnets that deactivate the machine

The cover off deactivation will not remove the energy held in the capacitor that's why there are Shock Warning stickers inside cabinet.

[Zelko-4-EVA]

Its recommended to use a resistor of a certain size on a wire between the two terminals to discharge one, but I always just use a screw driver for the pretty arc it gives off.

i have a 5 or 10 watt ceramic resistor (i forget the ohms value) that i use to discharge capacitors when i work on my guitar tube amps.  its fairly inexpensive - should be under a dollar.  the ceramic resistors handle heat a bit easier than other types. 

use this type of test lead/alligator clip to connect

 https://www.amazon.com/dp/B06XX25HFX/ref=twister_B07F1C31SB?_encoding=UTF8&psc=1