Quote from: jstefanop on March 07, 2019, 06:31:24 PM

Quote from: miningcoins on March 07, 2019, 12:06:15 PM

With the case on and no heatsinks the Apollo stopped hashing at high temperatures (40 degrees C ambient).
A restart fixed the issue, but this happened to me a few times in ECO mode with the fan on auto.
I think the fan could not cool the Apollo enough at high temperatures as it is only rated to run up to 40 degrees C ambient.

Have you installed the latest firmware image? You were probably experiencing the MCU overheat issue, and the latest image fixes this issue. If you want to make sure your MCU does not overheat pull it out of its socket and put a heatsink on the ARM processor (the big black chip on the other side of the blue board).

Thats probably the best use of all those heatsinks Wink

The main heatsink/fan for the ASICs is way overbuilt. They can both dissipate over 300 watts of heat at max fan airflow.

Thanks for the reply @jstefanop. Yes I had the old firmware running on the Apollo that was resetting.
I am now running the Apollos in balanced mode and they are still quite quiet.

I will replace the 14mm MCU heatsink with a larger 20mm heatsink as there is space on the board.

A few suggestions for future firmware updates:
- ASIC status or/and count showing how many ASICs are working.
- Display the clock frequency (I assume 384 is the default ECO mode frequency)
- A graph showing the hash rate against time
- A super ECO mode which further undervolts and underclocks the Apollos for folks with high electricity costs and in readiness for the Litecoin halving in August to squeeze the efficiency. Although I hope the price doubles to compensate.