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On the bench today a Sound Blaster Pro 2 which only outputs noise. Let's test it and see if we can fix it!
Let's troubleshoot this card using a thermal camera, a microscope and let's do advanced electronic troubleshooting on FM sound generation by Yamaha! Also a good opportunity to improve on my microsoldering skills!



Thanks to The Retro Web Discord server for unlimited support on the repair and on the development of my "Revision 1" testing jig
https://theretroweb.com/

00:00 Intro
02:20 Testing
04:39 My new ISA test jig
09:49 The Test jig works!
12:17 Sound Blaster troubleshoot
15:59 Thermal analysis of the fault
18:37 Swapping the faulty component
20:24 still not working 100%!
21:15 Another fault!
22:51 Troubleshooting the other fault
33:42 Swapping the faulty component 2
34:38 Testing!
35:15 Final test!
36:15 More swapped components!
37:34 Outro