There's a lot of information missing here.
1. Kenwood and Tektronix scopes are very different.
2. You haven't given us a model number of your Kenwood or even disclosed it's vintage or if it is analog or digital type, crt readout type, or what.
Yes, sometimes we just do get lucky. Older Kenwood pure analog models are pretty simple and often just cleaning controls and switches is all that is required.
More information, please!