Follow up on the Tek 465B. About 20 or so tantalums changed out. The intermittent ripple on trace is gone. Clean and sharp. DM44 right on the mark too. Completed for now until the next crap out.
Was planning on starting the re-cap of the RCA scope but I had to shuffle it back. This Fluke 8600A suddenly went stupid on the 20V range. That +9.980V should be +10.000V. It does eventually get to 10V after about a half hour warm up. Never did that before. The power supply has never been re-capped so decided to do it even though the voltages were OK.
The power supply before re-cap. Note those 3 orange/white tantalums lower left clustered together on the main board.
Changed out the PSU filter caps and no change was noted. I really didn't expect to affect anything anyway. Those 3 tantalums....in a critical op amp circuit. If one or more is leaky it could very well cause the slow ramp in measured voltage. Decided to change them. They were 10uf. All I had was 15uf. Not an issue. Guess what? The tant on the far left leaked electrolyte when I laid it on the bench! You can see a slight staining around it. Bingo.....more tantalum terrorism dealt with!
Here's the PSU re-capped and three 15uf tants installed. And the 8600A is rock steady. The Fluke 8050A has also never been re-capped but is working fine. Going to do it too.