Replacement for Solen 20uF 1200V capacitors

[Croc]

Hello,
I recently got old Cary 805b amp and want to refresh some of its caps.
It has Axon 20uf 1200v capacitors and one of them got a bit fried probably by heat from the nearby 10w resistor - so it make sense to me to start from it.
In the usual places such capacitors are not available.
Would really appreciate advise on this 🙌

Following are 2 versions of schematics of these amp.
I marked by GREEN the cap in question and by BLUE 2 other caps (i hope i got those 2 right).

 

[JonSnell Electronic]

This is about the best, I should say but only looked at one supplier, there are many.
https://www.mouser.co.uk/ProductDetail/Vishay-Roederstein/MKP1848H61012JP2?qs=vLWxofP3U2zE52USqcs99g== 10uF
https://www.mouser.co.uk/ProductDetail/KEMET/C4AQPBW5200M3MJ?qs=81r%2BiQLm7BQd/H62edZXWw== 20uF

I dare say the old split capacitor was caused by too high ripple current, producing over heating and failure.

 

[Croc]

Oh, those rectangular Film Capacitors can be used in this application?
I was looking for axials only assuming they made differently...

 

[JonSnell Electronic]

Electrolytic Axials do not run to 800volts let alone what you require.
Little choice I'm sorry to say but, 5 axial 100uF 350v in series, with balancing resistors, may work as required.

 

[chrisng]

Check out the Jantzen 1200V Superior Z-Cap, if space permitted.
https://www.parts-express.com/metalized-polypropylene-crossover-capacitors/voltagerating/1200