So I have a friend who can has an oscilloscope or maybe he can have a logic probe. If he have one I will let you know about!
The Z80 what I previously found is not available anymore...
![Sad :(](./images/smilies/icon_e_sad.gif)
I will search for an other one and I will buy a socket for this.
I tried to desolder the cpu but I can't... My friend can have tools for desoldering and I think he have some advantage with this.
"Let me know if you want to try using your multimeter to test the Z80."
If I can, I want to try to test it!
Gábor