PROGRESS!
That was FUN!
Got to love flow charts!!
I did find a few that would not apply to this scope so just skipped over them and moved on to the next.
Following the flow chart it asked me to check for certain voltages on the DC supply. All checked good so went to the “OK” side of the chart. It then asked me to the collector waveform at Q317. After a quick search on the board I found it was a 2SD381-M TO-220. The transistor had a large aluminum heat sink attached to it. After the check I found no waveform. What I did find was the leads of the transistor were cracked. Most likely due to years of stress and vibration. Loosen the board up, re-soldered the connection. Mounted the board, applied power and bingo, there was now somewhat of a trace on the CRT. It is not much but a start.
Now other issues to address.
Focus control does nothing.
Turning the time base control does nothing until you go far clockwise to “B” position then the trace moves to the right side. Above I said there was no X/Y position on the 1472 like the Kenwood scope. Guess I was wrong.
Trigger control very erratic, dirty.
Funny after all these years I find a very simple issue that caused the original problem.
For some time the scope was stored in an uncontrolled environment so will have to do quite a bit of cleaning and getting corrosion out of the controls and connectors.
Sure is good to see a trace again.