HP 3562A - Power Supply replacement cap

[innkeeper]

I had my HP 3562A suddenly die. i traced it down to a bad tantalum cap in the "power down" section of the PS circuit. (schematic below)

So here is my question. Is there any harm in putting in a 2.2uf aluminum electrolytic in there either temporarily or permanently.
from what i can tell its a simple RC timer circuit for power sequencing on the startup - it ultimately controls the start of the PWM.
At the moment, all i have on hand is 2.2uf aluminum electrolytics.
i can order the part but that will take a few days plus its a holiday.
Id love to get this up and running now, but, I don't want to cause any unforeseen issues in my rush to get this up.

second question is, ... the cap went resistive (56kohms)  Could i be missing something that could have caused this that i need to be checking or am i just looking at simply a bad cap on an old piece of gear and i shouldn't worry about it.

I usually wouldn't be so worried / questioning myself about a simple fix but I don't wanna screw this up
its not a piece of gear i can afford to replace.

[SeanB]

If it is a 105C electrolytic put it in, provided it is a 35V or higher part. modern electrolytics are quite good if a decent brand, and will work there well enough.

[innkeeper]

Thanks, i needed that little reassurance i was not missing something.
So, i threw in a 50v 2.2uf 105C electrolytic in it to get it running.  although it is not a good quality one, It will due till i get the replacement.

if it will fit, i'll try and put in a higher voltage tantalum in there like a 35v vishay tantalum as a replacement just for peace of mind.
reading the spec sheet the temperature spec goes up with derated voltage.

should be good for another 28 years 
... could that be right - i guess it could - date codes i am reading are 5 week 89 and 14th week 89 and it looks like its never been opened.... pretty amazing!

freaking power supply design is impressive. my first time working on one of these, but holy crap, its engineered like it as going to space and designed to actually be worked on. i am highly impressed.