mk4 parts. cant even buy em from hercules

i have a mk4 which i have damaged the usb socket. i repaired it once . that worked fine then second repair broke the main power pcb board. i have contacted hercules and asked for a repair service or to supply partsat my cost and they cant help. so does anyone have any ideas. dont want to buy a new ine.
the unit was 2nd hand from ebay and not under warranty.

Hercules are the only one who can provide you with spare parts for theu unit. They are the manufacturer and the only ones likely to have such components. If they cannot provide you what you need the only solution would be to purshase another second hand unit (to save some money compared with buying a brand new one).