Thanks for that. Got the identical EE series one on mouser. It has a high ripple current, which is all I could find on the Sam Young datasheet. Still categorised as general purpose on mouser.

Any ideas about the HXB marked caps ? They are small 6 x 7mm, so may be able to replace with good quality panasonic and ignore the HXB....

When I select low ESR on mouser, I can't get 200V for anything, let alone 47uF. Tried Farnell and Digikey, and not having much luck with low ESR for 47uF/200V. Can probably get from China !

Also looking to replace the 4 47uf 200V caps, which are in the area of LED output. They are SAMYOUNG NFS series - high ripple allegedly. The only ones that come up on mouser with those values are panasonic ones 'general purpose'. Would they be ok - I'll probably recap bits to see what cures the problem, so I can put back the originals if they are not the issue.

Cheers,
Simon

Back to this old chestnut ! I thought I would replace all the capacitors, as resoldering joints did not help.

Am trying to get the sizes correct and also a low ESR or impedance option. There are a few with HXB marked on them which is also on the schematic. e.g. CM807, CM802 and CM816. I goggled it the only thing I could find was a polymer hybrid capacitor reference, which I didn't think these looked like. They are quite short i.e. 7mm-> the low ESR 10uf 50V replacements are 11mm in length. They should still fit as there are higher profile components on the board.

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