Anyone with a Cheese Chase PCB?

[Laschek]

I have a Cheese Chase PCB with an empty socket in the lower left corner and need to know what's supposed to be there. Board's not working so I assume something should be there.
It's a larger socket, about the size of a Z80, I can provide a pic when I'm back home from work.

[slowcade]

I have a lot of them. If you supply a pic of the area, I can take a look.

[Laschek]

Thanks for your help! Here is the pic, it's the empty socket within the red marking, I think it is labeled U133(?):

[Laschek]

@slowcade: In the meantime I was told that this socket is supposed to be empty, can you confirm this?

[slowcade]

Sorry for the slow reply, I keep the game boards in a separate warehouse.
Yes, mine is also empty, and I confirmed that the game is fully working. (Sorry about the quality).

[flip971]

Laschek: check the dip switch setting.
If You take a look at both pictures, You notice the settings are different.
The power supply, works correctly?

[Laschek]

@slowcade: thanks for your effort, much appreciated!

@flip971: I have the DIP siwtch plan at home, gotta check if there's a crucial setting, but I doubt that.
Power supply is working fine, I tested it on my MAK where other PCBs work perfectly well.