Uploaded September 2025 | Updated September 2026, 2 weeks ago
This CONN ST-11 Strobotuner from the 70's wasn't staying in calibration so it couldn't lock on to a note when tuning. I took it apart to see if I could get it working and while I was investigating, I looked at the schematics and put a few signals on the scope.
0:00:00 What is a strobotuner
0:03:16 Block diagram
0:05:56 Tear down and look inside
0:08:39 Schematic overview
0:12:58 Schematic main oscillator
0:17:59 Schematic clock divider
0:20:18 Oscillator signals on the scope
0:24:17 Working demo of strobotuner
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This CONN ST-11 Strobotuner from the 70's wasn't staying in calibration so it couldn't lock on to a note when tuning. I took it apart to see if I could get it working and while I was investigating, I looked at the schematics and put a few signals on the scope.
0:00:00 What is a strobotuner
0:03:16 Block diagram
0:05:56 Tear down and look inside
0:08:39 Schematic overview
0:12:58 Schematic main oscillator
0:17:59 Schematic clock divider
0:20:18 Oscillator signals on the scope
0:24:17 Working demo of strobotuner
Visit the second channel: youtube.com/@gadgetsideload
If you'd like to support the channel, you can:
Join a membership on this channel: youtube.com/channel/UCwiKHTegfDe33K5wnmyULog/join
Support me on Patreon: patreon.com/gadgetreboot
Shop through my affiliate links (I may earn a small commission, costs you nothing)!
Banggood banggood.com/custlink/3vKYLANH8N
Aliexpress https://s.click.aliexpress.com/e/_AFeHwB
Amazon.com amazon.com/?&_encoding=UTF8&tag=gadgetreboo05-20&linkCode=ur2&linkId=952875a3564e2204d1786f94b9e1a8d3&camp=1789&creative=9325
Amazon.ca amazon.ca/?&_encoding=UTF8&tag=gadgetreboot-20&linkCode=ur2&linkId=70fa82315ac48f03342938bd4fb93535&camp=15121&creative=330641
#ElectronicsCreators
