I don't have the documents to hand but from memory, this model will require the use of suitable de/soldering tools and a complete stripdown to repair it. If you're happy with that, suitable DC sockets are available on
eBay etc.
A good tip is that when stripping down, take photographs of the various stages so that you''ll have a reference when rebuilding. Also, lay out the screws etc to match their positions on a piece of card or similar.