Electronics > Repair

Leader LS1020 Oscilloscope Repair

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TheRuler8510:
I picked up a Leader LS1020 Oscilloscope amazingly cheap, $20. It is a cute little scope in pristine excellent condition, except there is no vertical deflection. It sweeps fine, so I guess the inputs are blown--both channels.

Anyone have any advice how to attack it? The only schematics I can find on-line are of the power supplies, so I am going in blind.

Thanks for any advice!

tautech:
Just offer a simple but distinct waveform (square-wave, even probe cal output) to one input and follow the signal path with another scope. It is possible one fault has affected both channels.

TheRuler8510:

--- Quote from: tautech on April 08, 2014, 06:05:09 am ---Just offer a simple but distinct waveform (square-wave, even probe cal output) to one input and follow the signal path with another scope. It is possible one fault has affected both channels.

--- End quote ---

Good answer...thanks!

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