Yamaha SPX90 II Video 1
19:15
Yamaha SPX90 || A 1980's Icon
23:48
Yamaha SPX90 II Repair and Teardown - Part 1
21:24
E-mu Proteus Teardown, Power Supply (PSU) Replacement and Factory Demo Tune
20:10
WHAT REALLY HAPPENED TO TECHNICS
1:18:51
The BEOCORD problem
19:24
Tons of CHORUS FX comparison
11:13
Fixing Yamaha SPX90 digital sound processor - no power - bar graph lit up - nothing on screen
12:49