I though yesterday was going good-finished some work early, found some test equipment on craigslist and had it in my hand 30 min later (Fluke counter/timer). Of course, talked to the old timer for awhile about scopes, and I told him I was in the market for a digital scope should he come across one. He commented that he just trashed several analog scopes because the trace disappeared and it was too difficult to get inside of them (off brand).
Quite ironically, I got home and hooked my freq synthesizer to the counter to see if everything matched. With the synthesizer set to 10Mhz, the counter showed 9.992Mhz. Not real bad, but I wanted to see what the scope showed as well. I had it powered up and had a hard time getting a good trigger on it. Finally, it locked on. Disconnected the probe, and that's the last I saw of a trace on any channel. If I quickly rotate the trigger level knob, the trace flashes for ch-A, ch-B, and ch A+B (as set). It's a Tektronix 2246. I'm somewhat attached to this model, even though I know I need a digital unit (just didn't figure it would be NOW)
I have the service manual in pdf, and perhaps I can get to opening it up this weekend. Has anyone run into similar problems?