Nintendo 64 Transfer Pak/GB Pack Repair & Troubleshooting

[grandta13]

I was wondering if anyone has any tips on troubleshooting and repairing malfunctioning Transfer Paks. The issues I've most commonly encountered is that a game inserted is either not detected or detected improperly (Using American & Japanese Pokémon Stadium series to test).

Also, are there any differences between the Transfer Pak and the Japanese GB Pack （GBパック）?

[Ziggy]

Did you try cleaning everything? The controller socket pins, the male and female Transfer Pak pins, and the GB cart pins.