use picoBT tester to test Whatsminer M21S hashboardPicoBT test fixture tutorial

The multifunctional PicoBT tester can not only test the Antminer hash board, but also detect the failure of the Whatsminer hash board. In this video, our technicians will explain in detail how to use the PicoBT test fixture to test the Whatsminer M21S hash board. 00:00 opening 00:12 Introduction 00:43 Connection operation 01:02 M21S mode setting and explanation 03:38 Test TXD Signal Demo Tools and materials used in the video: 1. PicoBT Multifunctional Hash Board Tester： 2. UTP1310S DC stabilized power supply： 3. Bitmain Antminer APW3 PSU： 4. Whatsminer M21s Hash Board： 5. Hash board cooling base：