Just a small break in my hiatus, so don't worry, I won't post too much.
In the little time I had for TEA, I cared for those PSUs I received a while ago. One of them is a Philips PE1514.
One output was almost dead, all potentiometers needed cleaning. Despite being a Philips, there's very little plastic involved. The case is made of die-cast aluminum (the lower half doubles as a heatsink for 2 pass transistors).
However, the power switch is a plastic one (made by Arrow, UK), and sure as hell, its neck broke when I wiggled a little at the cables (it seemed to have intermittendly bad contacts). Not totally unexpected, I must say. This was already the third such switch with the exact same failure mode.
While such switches are common, finding a replacement wasn't easy. The notch in the thread is at the ON side, while all of the d.p.s.t. switches nowadays have it on the OFF side. And d.p.d.t. switches are too big to fit in. I finally settled for a s.p.d.t. switch and shorted the other pole. No big deal, as my outlets are also switched.
A few more images.
The main filter caps were all in perfect shape, but the ones for the auxiliary voltages showed bad. After replacing them all outputs were fine.
While I was at it, I pulled out my second PE1514 and checked it also. Same issues: duff aux filter caps, mains switch breaks at the slightest touch.
Both cases sported an awful lot of stickers, and the front wasn't spared. Is it really necessary to change the inventory numbering scheme every few years and put new stickers on all gear?
They're gone for good, now. There's still the cracks in the meter's bezels, but that's not hurting their function.
These PSUs were used for over 40 years in the lab, and they did their job well. 3 isolated outputs, 2 * 20 V/0.8 A, 1 * 7 V/3 A. Very reasonable ranges, IMO.
Yes, they're not -hp-, but I really like 'em (and they were the favorites of several colleagues).