With a little patience, you can repair your NES and games to a like-new condition. This guide will help you disassemble your console and show you the areas you need to focus on when cleaning and repairing your Nintendo NES. No electronics skills are needed to follow this guide. The only caution I would advise is to take it slow and make sure not to pull too hard on PCB boards or connector wires.
Looking for a detailed walkthrough on cleaning your NES Cartridges?
Step 2: NES System Repair Tools
NES Connector 72 pin Nintendo Repair Part
Nintendo NES Repair Cleaning Paste
Nintendo NES Repair Cleaning Rinse
Non-Static Cleaning Pads
Or you can find all of these supplies in our Nintendo NES Total Repair Kit