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[Allenm]

Capacitors - particularly Electrolytics - are funny beggars. There are lots of other parameters other than capacitance and voltage that matter - things like ESR and AC cycle current. If at all possible, try to look up the exact specs for the brand of capacitor you are replacing, and use one that matches those specs as closely as possible - ideally the same brand.

Not all 680uF 6V3 caps are equal, and going for the cheapest you can find is rarely a good idea.

Yep, They look to be the same specs, and not overly cheap.  They were cheaper in RS but the delivery cost was stupid

[Allenm]

Well, partial success.  Swapped out the obviously bad Caps and managed to get it working of sorts.

There are clearly lots of other issues that make it a bin job, but at least retrieved the DVD that was in it before it heads to the tip.