nerdlabs94 shares how to put your old tv back to use on instructables
Oscilloscopes are useful for troubleshooting electronics. But when my oscilloscope broke recently i decided to take the DIY approach to replacing it. Unlike modern TVs, old CRT TVs have 4 wires that control all the motion on the screen. By inputting a signal into these wires you can use the TV as an oscilloscope and see the signal on the screen!
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