Hi,
I was able to make a hardreset with !h and afterwards all seemed to be ok (10MHZ still available, locking sats and switching to disciplined)... until some time (30-40 minutes).
System halted again.
First I thought it was caused bei the SS command within the attempt to get a save position, but an additional reset and another attempt doesn't fixed it back.
I also checked the output of the DC-DC converter and output of the voltages are ok (also ripple/noise looks to be ok and within specs of the converter)
One thing I noticed:
The board stickers states that it runs with Firmware 1.86.
The Trimble GPS monitor shows firmware 2.62
So I think a preowner updated it.
So actually absolutly no idea why the system decides to shutdown the adjusting voltage for the oscialtor.