Leader LS1020 Oscilloscope Repair

[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]

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.

Good answer...thanks!