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Who has info on R&R caps in ARC D90B amp?

Does anyone have experience to share on replacing the filter caps on an Audio Research D90B?

Those grey caps stacked in the middle, any diy using ARC's "sled" replacement or any others? They are twist locks and looks like a challenge to remove, even using two soldering irons and a helping hand to pull it free.

The amp is running fine now, but discussion suggests the caps are past thier prime and age related failure is emminet.

Your thoughs please.
128x128sneauxman
sneauxman's avatar
sneauxman OP
6 posts
 
Anyone?
renjy651
74 posts
 
I think They are 400uf at 450V. You need to use very low esr caps. Kendeil capacitor made in Italy is very good. Also Cornell Dubilier made in usa. These two companys makes the best caps for audio.
hifigeek1
770 posts
 
I have on many occasions R&R'd those caps. If you are unfamiliar with twist-lock-lytic removal find an ARC repair facility near you to do it for you. You don't want to damage the through hole plating on the mother board. Some of those small traces come off very easily. I only use ARC caps with the adapter. That is a major improvement over the stock twist-locks.
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