lococnc

I found that with as many times as I have flashed the firmware that about 1 in 10 fails like described with endless beep and blank screen. I formatted the...

Delta fans do not have this problem. My GDSTime fans lasted a day. Replaced and have no issues. Mine are 12v so it took adding a buck,

Sealed Chamber, printing ABS, I run fans at 16%

I bought from Digikey https://www.digikey.com/en/products/detail/delta-electronics/BFB0312HA-A116/5022815 I used a small buck-converter to power the + terminal on fan, since the MCU switches ground.

Ali link to one identical to the ones I used. https://www.aliexpress.com/item/1005003179503083.html?spm=a2g0o.productlist.0.0.74d52c3aBSuXD7&algo_pvid=c56dd7c2-b18e-4b14-8008-ffcd0abfa046&algo_exp_id=c56dd7c2-b18e-4b14-8008-ffcd0abfa046-1&pdp_ext_f=%7B%22sku_id%22%3A%2212000024528815771%22%7D

Buck it.