I have a Tenma Model 72-320 Oscilloscope given to me that doesn't work. It won't sweep. The screen lights up and the strobe is present but doesn't sweep anymore. It did when I first started it up but after awhile it just stopped. Does anyone in here have knowledge on where I can start looking to determine if I should fix this or chuck it. I don't have a schematic or owners manual for it and have looked for a free one online but no luck. I brought home a Fluke 123 Industrial Scopemeter from work to try and troubleshoot it but with no schematics I'm not sure where to start. Do you think it could be the sweep generator bad? or something else. any hints or tips is much appreciated.
Jeff
Jeff