Heathkit 4105 Single Channel Oscilloscope 5 Mhz Variac Power-up

Model IO-4105 Five megahertz you build it scope. One owner, original builder, with documents.
At: 5:00 - 5:05 a crispy resistor can been seen between two capacitors

[@kennynvake4hve584]

Turn the lights off, or put it in a dark room and see where it is sparking. Like you said, Im sure it's the cap's arching, or the high voltage wire to the CRT.

[@LifeBloodMarketing]

Thank you, there is a trace that shows, if I turn the sweep speed all the way down, I can see the dot rising and falling with the correct 1v-pp. I've got new power caps on order. Finding 2000v caps isn't easy, ebay. This thing has been sitting for decades in a wet environment, I am sure some of those resistors are out of tolerance as well.

[@Henry-lq6rt]

I have the same model and I want to hook it up to my receiver so I can send music to it and see the sound waves how do I do this?

[@LifeBloodMarketing]

If you have a probe, you'll probe the signal from one of the speaker outputs. As always be careful, look up viewing signals with an oscilloscope.