If the oxidisation isn't too bad, repeatedly inserting and removing the cartridge with the power OFF! Will reinstate enough contact between cartridge and console to get your cartridge working again.
Be patient and gentle, it might need doing for a few minutes before you bring life back to that old game and ramming it in won't help but may just damage your console or game beyond repair. Cleaning Step 1 Give it a blow.Don't ask me how or why this works. Give the contacts a good short hard blow, trying very carefully not to transfer spittle into the cartridge while you do it. It may need to be done a few times but this really does work (sometimes). If you weren't lucky and this didn't work then you need to clean the contacts.
You will need to get some rubbing alcohol (90%+ alcohol if possible although 70% will do) and some cotton buds. Dip the cotton bud in the alcohol and gently rub along each contact back and forth a few times. You will be amazed just how much oxidisation is removed on a cart that has been unused for a while and the cotton bud will get quite dirty. Repeat this until the contacts are clean and shiny.
Cleaning Step 3 Ink Eraser. Non abrasive methods haven't worked so it's time for the big guns. You will need an ink eraser and a small brush (a half inch paint brush will do). Depending on the cartridge and the shape of your eraser (unused ones will have a nice beveled edge that will get into that gap) you may need to disassemble your cartridge first.
Some cartridges such as those for the Atari 2600 will pull apart after the removal of one screw with care! , some cartridges such as those for the Nintendo 64 require special tools. You can find instructions on how to disassemble specific cartridges elsewhere on the internet. I will assume that you have taken your cartridge casing apart and have the circuit board and contacts fully exposed. Take this opportunity to examine the circuit board for broken solder and to replace any batteries.
Use the eraser and rub on each of the contacts gently in turn until the oxidisation is removed. Once done use the brush to clean off the bits of eraser. Reassemble and try out your cartridge. Absolutely genuine - no copies, fakes or imports of dubious origin here. Buyers in the United Kingdom may pay online or by postal order or cheque. Overseas buyers may pay by online methods only. I do not accept bank transfers or cash.The item "BRAND NEW FACTORY SEALED Time Killers Sega Megadrive UK PAL video game (1996)" is in sale since Monday, May 3, 2021. This item is in the category "Video Games & Consoles\Video Games".
The seller is "kirrieyog" and is located in Dundee. This item can be shipped to all countries in Europe, all countries in continental Asia, United States, Canada, Australia.