Modchip > new laser or old

I've got this modchip I want to install, but there's one thing I'd like to ask first.

How can I see if my Saturn (PAL, round buttons) has a new laser or an old?

THNX in advance
 
Remove the 5 screws and open up the Saturn.

Have a look at the CD board. It will have either a rectangular 32 pin IC, a square 64 pin IC or no ICs.

If it has a 32 pin IC, all is well.
 
Actually, I've gotten the chips I sell to work in my 64 pin Saturn but others have not and I don't know why. Trying to figure out the cause.
 
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