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Very strange problem with a crystal oscillator

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As I told you, original NES clock is over 21MHz. I'm sure it divides clock by 12.
And as I already said too, I did this some time ago and it worked. I think it is a problem with the oscillator.. but I can't understand why...
 
what is logic probe you use? something DIY or commercial product?
it must be introducing bias or capacitance. both are easy to try.
 
Add decoupling caps as stated, and maybe a heatsink. Not sure how that light load on the output would make it work?

But if it ran at 27Mhz, the person that designed it did that for some reason, maybe its max speed. So heatsink and hope that is a special chip that can take the heat.
 
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