This is the Sony PVM 20M4U High Resolution Trinitron CRT Monitor.
For more information on repairs, diagnostics and to connect with me, please visit: https://www.patreon.com/retrotechUSA
What's so special about the 20M4U: https://youtu.be/UN2gnHI_R9Q
Checking the M series for faults and other services: https://youtu.be/aDixS6pTZkk
Testing Software for checking CRT displays: https://artemiourbina.itch.io/240p-test-suite
#retro #retrotech #crt
0:00 - Intro to the PVM 20M4U
3:45 - Monitor Teardown tips and tricks
11:25 - Breakdown of the circuit boards
20:38 - Servicing the boards
23:00 - Testing the PVM after servicing
27:11 - Power Outro