Buy Used Oscilloscope ✦ Exclusive

Check for dead pixels on LCDs or "screen burn" on older analog CRT displays. Top Used Models for Hobbyists (2026) Based on current market availability and community favor:

Look for a rate at least 2.5 to 10 times your bandwidth for accurate waveform representation. buy used oscilloscope

Deeper memory allows you to capture longer time windows while maintaining a high sample rate, which is crucial for finding intermittent glitches. Check for dead pixels on LCDs or "screen

Test all knobs and buttons. Rotary encoders (the knobs on DSOs) are common failure points; ensure they don't skip or lag. Test all knobs and buttons

Most modern digital oscilloscopes (DSOs) run a self-test on startup; ensure it passes without error codes.

Connect a probe to every channel and attach it to the built-in probe compensation output (usually a small metal tab on the front). You should see a clean, steady square wave.