So I have a vintage analog TEKTRONIX 2465 Oscilloscope that I bought used on eBay for a bargain of $300 last year. When I got it worked okayyyyy except when there was no input the CRT would display Channel 1 and 2 lines slanted and pressing the BEAM FIND button didn't help(nor adjusting the display controls). But last week I turned it on, then used the probe to an AC power supply I have and I saw this(no control adjustment helped): Now someone over at electronics.stackexchange.com suggested it might be a bad capacitor in the horizontal sweep amplifier. So I took it apart for further inspection and the CRT(made by Tektronix) was stamped with the manufacturing date of 3/23/83. That's 33 years, folks! I do wonder if the CRT might have gone bad(not sure what the average lifespan of a cathode ray tube is and particularly for an oscilloscope). Now have a USB oscilloscope probe but what do you need to connect this machine to a PC since it has digital outputs in the back? Does anyone here know how to interface the digital control computer of these devices? Any help would be most appreciated.