Testing the ‘damaged’ MOSFETs in my VU2EVQ HF linear board!

Johnson Francis | January 23, 2026 | Amateur Radio (Ham Radio) | No Comments

Testing method modified from: #132: How to test MOSFETs with a DMM – a few methods… https://www.youtube.com/watch?v=gloikp9t2dA&t=106s (W2AEW). (I am using analog Multimeter instead of a digital one. Red probe in analog Multimeter gives the negative voltage from internal battery when set to resistance (Ω), which can be given to the Source of N-Channel MOSFET IRFP 150.