Tektronix 455 won't display traces

Hi. Engineering student, new to this forum. I bought a Tektronix 455 oscilloscope through my university's surplus depot. It was a great price, and came with tons of probes and leads. I plugged it in there, and it warmed up instantly and started giving me a trace showing 0v dc, which I expected since the probe wasn't connected to anything.

However, when I brought it home and plugged it in again, no trace appeared. Pressing the "beam finder" button does make a point appear, and I can move that around with the position controls without any problems. However, the flat line I'm expecting doesn't show up. I tried connecting it to speaker wires coming out of my stereo; no ac waveforms, either. I doubt the scope got damaged during transit, because I had it on the seat right next to me the whole time.

Any idea what the trouble is?

Thanks.

Hello Hyderiusmaximus, welcome to the forum

There could be a small fuse on a small PCB on the xfmr.

Did you have any luck with this problem. I have a Tek 455 no trace. found burnd resister on main borad. Keeps blowing .5 amp fuse.

Forgot my Email
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it