Ok, I spoke out a wish I feel like I have to go ahead..
..coming back to my new old 6824A Hewlett Packard Harrison amplifier/power supply 50V/1A.
I mostly finished checking and reworking the unit. It's not really a repair since it's working fine to it's specification and I mainly had to clean it up and redo the gorilla-style power cord "strain relief".
I posted pics of the front panel here already: swapped the binding posts and did a rough clean up. Have to get rid of some more stickers and sticker residue:
Left side: The mounting screws holding the big transformer inside were not there except for one. Used four slotted screws to fix that gaining one original screw I could use to fasten the backplate better (the gorilla was everywhere; inside a screw holding the pcb was missing..)
Bottom side: the original feet are combined screws holding the bottom plate of the housing and having a rubber head utilized as feet.
The rubber-ness was long gone, two of the screws were missing their rubber head leaving them just being screws -the two other had hard plastic heads -rubber without any elasticity left. I decided to go for self adhesive rubber feet for now:
Top side: cleaned up, nothing exciting except for the fact that all four screws are there...
In fact, I lost one of the four clips that build the counterpart for the fastening screws for the top plate. Here is one:
I built the missing one from scratch using sheet metal cut out of an empty fish can (part of the dinner..):
Finally the back plate of the unit. I replaced the power cord and mounted it with a matching, nearly authentic strain relief:
Remember that:? (showed it here a couple of days ago and many pages back...):
My impression got even worse after removing the electrical tape:
It was not even soldered!
I removed the power cord, removed the 5cm long remains of the older power cord, desoldered all power connections related to the mains power in and rebuilt it with proper heat shrink isolation. Sorry no photos of that -I was so busy putting it back together, I forgot to shoot.
Now, the HP6824A has a nice new power cord H05RN-F 3G1.0.
Ok, next posting will show some work inside the HP6824A -nothing exciting though.