SNES Game Genie doesn't work

[KHS]

(I posted this question here because it's not related to hacking.)

My SNES Game Genie has no effect on games. The codes I enter just don't do anything. (The same codes work on an emulator. The ROMs I used were the same version as the real cartridges.)

I have noticed that if I enter any five codes into TMHT: Turtles in Time, press start and reset, these five codes always appear on the Game Genie screen:

E7EF-2FD7
83ED-EA78
DDDD-DDDD
DDE7-EFE8
DD3E-D83F

If I understood the manual correctly, the codes that I entered should appear after a reset.

In Tiny Toon Adventures: Buster Busts Loose, the five codes that appear after a reset are slightly different but don't depend on what codes I have entered.

The switch of the Game Genie is in the 'on' position. The led lights up. I have cleaned the connectors of the SNES, the Game Genie and the games. I looked at the circuit board of the Game Genie but I didn't see any damaged components. I have an unmodified European SNES and European games.

Could my Game Genie be broken?

[Helder]

I had the same problem in the past , I fixed it by making sure both the cartridge and GG connectors are clean.I then had to jam some paper between the GG and snes cartridge slot so that the GG was being pushed back more so then normal and I have had success for all this time.

[KHS]

I cleaned everything again and put paper between the Game Genie and the SNES cartridge slot, but the Game Genie still doesn't work.

[nensondubois]

You probably have a snes Jr. or as some people call it: a SNES 2. Nintendo tried to defeat the Game Genie with the new design and they seem to have done it. This may explain why my PAR MK 3 doesn't work with SFX games.