Back in the old days, we saw crosstalk at at 4Mhz. I think circuits absent a pullup can be susceptible. But in general, I agree, you're more likely to break something removing and reinstalling the probes.
Which reminds me, one time back at my first job, the hardware guys were working on a new design, and it only worked with the logic analyzer probes attached to the CPU. They later discovered a missing connection between a pullup or pulldown resistor and the appropriate +Vcc or GND supply.
Which reminds me, one time back at my first job, the hardware guys were working on a new design, and it only worked with the logic analyzer probes attached to the CPU. They later discovered a missing connection between a pullup or pulldown resistor and the appropriate +Vcc or GND supply.