[teng]

Hi Weblacky,
Apologies if some confusion (my fault I revived a several years old thread here) I saw cz7asm thread from some years ago as he outlined exactly the same symptoms and workaround i’m observing entirely independently on a newly acquired Fuel with a different PSU. Pleased to meet you, I’m teng

cz7asm outlined in his earlier post that he swapped the NVRAM DS1742W-120 and the issue seemed to go away. I can say that my PSU is basically new in box, manufacture circa 2018 corsair ATX supply and ATX adaptor board. I replied as my issue is uncanny and exactly the same issue.

Internal L1 will not come up unless the power switch is toggled. on, off, on It does this very reliably

My speculation on the sequence
toggle power on NVRAM DS1742W-120 is flat, L1 hangs on start and stays crashed circuit gets energised with some volts
toggle power off L1 terminates, NVRAM DS1742W-120 circuit will retain some volts until the PSUs/mainboard filter caps discharge
toggle power on, NVRAM DS1742W-120 circuit is already energised, L1 will start up as normal

toggle off, on allways works 100% of the time, this is what we both observe

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I could perhaps try some tests on the NVRAM DS1742W-120 I’m not quite sure what the relationship is with the top hat, am i correct that fuels have 2 separate batteries in?