Hi everyone, Nintendo Repair Shop tech here. The blinking is caused by a worn out NES 72 Pin Connector, or dirty NES games. Fortunately, we have been performing NES System Repairs for a long time, and have developed a NES Total Repair Kit that has everything you need to professionally repair your NES System and clean your NES Games. The kit includes the highest quality new 72 Pin NES Connector on the market (to replace the old worn out connector in your NES System); a 3.8mm gamebit tool to open your games for proper cleaning, and a special cleaning solution and non-static cleaning pads that work wonders to get your games clean.

Hi folks, Nintendo Repair Shop repair tech here. We actually have created a guide to instruct users on how to repair their NES system. The trick with the game cartridge tray is to make sure a plastic latch hooks underneath the NES motherboard. Check out our NES System Repair Guide for details on how to repair your NES System, and the trick with the game cartridge latch.

Hi folks, Nintendo Repair Shop repair tech here. While using rubbing alcohol won't hurt your games (unless you absolutely douse them in it), using alcohol and a qtip is really not an effective cleaning method.