allan wylie

I'm interested to read about your problem Josh as my G3 does a similar thing only mine resets itself to 50 hz, not 20. I have reset it to 200 dozens of times. I press enter, store, etc and it will be okay for a while, then suddenly I'll find it's back to 50 again. Something I do must cause it to change but so far I haven't been able to identify the cause. I'd love to find a solution - does anyone have a clue? Allan Wylie