The iconic JVC RC-M90 Boombox @probnotstech
The iconic JVC RC-M90 Boombox  @probnotstech
Uploaded March 2026 | Updated September 2026, 2 weeks ago
This whole video is just an excuse to play with this boombox.

0:00 Out with the old
0:41 In with the new
1:08 Storytime
2:50 Obligatory social media plug?
3:03 Overview
4:10 Cold solder joints
5:22 Fusible Resistor / Belts / Bad motor (Thank you Hitachi for your service)
8:07 Wow and flutter
9:03 Record bias
10:24 Antennas
12:36 Rear connections / Battery compartment
13:56 Broken screw post / missing screws
14:53 Inside - motor / fusible resistor(s) / bias adjustment
18:06 Tuner demonstration
21:58 Front controls
25:40 Test recording setup
26:30 Playback demonstration
27:27 I am not an audiophile
28:22 Conclusion
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The iconic JVC RC-M90 Boombox

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