Modular Nixie Clock Rev3 keeps restarting

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2 years 3 months ago #10489 by jjansen
Ian, thanks. I will follow up on your advice and replace the 22 pF caps first. I have some at home (also 16MHz Crystal).
So you don't have to send me a replacement set now, thanks!

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2 years 3 months ago #10490 by Ian
OK, many thanks! That will make it much faster to get to the bottom of the issue.

Replace the caps first, then retest, then if that doesn't solve it the crystal. If that still doesn't help, there's only the controller and the socket left, and I can send you a replacement controller if necessary.

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2 years 2 months ago #10491 by jjansen
Replacing 22pF caps and crystal didn't work.
I replaced the mosfet with another IRF640, problem looks solved now. It's running for 20 minutes now without any resets.
Thanks guys for your help!
The following user(s) said Thank You: Ian

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2 years 2 months ago #10492 by Ian
That intrigues me. I see no reason why replacing the MOSFET should have solved the problem. Do you still by any chance have the faulty MOSFET? If so, I'd like to investigate it. Perhaps it has a gate problem... I really don't know...

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2 years 2 months ago #10493 by jjansen
Yes, I still have the MOSFET at my desk.

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2 years 2 months ago #10494 by Ian
Would you send it to me? I'll pay the postage... Just put it into an envelope taped to a piece of cardboard. Nothing special. Thanks if you can.

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