I’m guessing the blue one?
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ARC factory lytic … perfectly in order
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Yes the blue one.That capacitor concerns me. Stands out as non original.
I would have thought at the very least a matching original pair would have been fitted to a premium Brand like Audio Research.
The two pre-amp channels share a single power supply, which is the circuitry towards the top of the picture. It’s got quite a few one-off things in it - one KT88, one 6H30Pi (I think that’s what it is), one larger yellow film cap towards the left, one smaller one towards the right as well as that one purple axial electrolytic. The resolution isn’t great. I can see it’s 47uF, 250V but I can’t be sure of the manufacturer. The blur is not inconsistent with it being nichicon though, which is what I think the black upright electrolytics to its right are. I suspect it’s original.
Some clumsy soul has bent one of the TO-220 devices over a bit, but it will probably bend back.
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Ahh worrying unnecessary then 
Thanks guys.
This pic
from Audio Nirvana seems to show a similar cap
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I need another one of these as it looks like my cart is on its way out and replacement stylus are unobtanium.
Question is does Picture 3 look slightly off kilter?
If anything I’d be slightly more worried about the four orange film output capacitors at the bottom towards the right. They seem to be a bit clumsily wired in. And Audio Research really don’t do clumsy.
think it’s just the photo angle, it’s not quite dead on, you can see some of the left side of the cartridge body, but none of the rhs.
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That’s just nicely ‘run in’.
You’ve been spending too much time in used-car dealerships! 
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Err, Emporium…
Yes, I did spot that and thought it needed a closer look. Then I didn’t give it one 
. There are other brown things just to the left of the KT88 socket (one in front and one behind) but on closer inspection they look OK.
The Audio Nirvana pic suggests that the cooked R you’ve ringed was once blue. Without knowing what it’s doing it’s tricky to say why it’s so distressed. One possibility is that it’s some sort of dropper element in the power supply and it’s working too hard because the design was really for European 220V rather than UK 240V. But that’s not much more than a guess.
Otherwise it’s possible that there’s been a fault elsewhere in the psu in the past, which scorched the R, but since it still measures fine it wasn’t replaced when the fault was fixed. If the job could be done, say, just by replacing a valve then someone might have been tempted not to take the whole PCB out (quite a job) to replace a discoloured resistor. But really I’m guessing now.
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Don’t worry about a cap, it’s AR so there’s a thousand other things to go wrong before that.
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Thanks for the input guys much appreciated !
Guess or not, so much evil lurks therein…
When you lean your Krell power amp on it’s face plate on a hard uneven surface. What a twat.
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Yes