Quote from: pkspks on January 01, 2021, 12:48:57 AM

Recently acquired a R606 from Eyeboot and been running fine for several days, with Pi 4 and Server PSU + breakout.

I check pool status regularly and noticed hashing stopped. Restarted Pi 4 and power cycled R606 but hashing will not start anymore.

Appear to be detecting only 9/12 chips. Is unit faulty?

Verbose log from cgminer below:

Left it unplugged for half a day, then connected to a RPi3 with Raspberry Pi OS fresh install. Encountered found 0 chip(s) again but after several retries, hashing finally started. Managed to turn on verbose and log, until the point it stopped working again:

As far as i can judge the logs and talking about own experience, i'd say return the unit to reseller and ask for other one.
Ofcourse Sidehack should be able to give you a more clear view on this.

Did you check this:
1] Try another PSU, did you check PSU type?
2] Are you using GS breakoutboard? (in my experience it works the best)
3] Did you check USB cable, try using good quality
4] Did you use good cabeling to power the R606? (make sure youre cabling is right, i once got cabeling not made right. On some points black and yellow where switched).
5] ambient temperature, is it not to high?

Somehow one of my pi4 ports is not working well with R606, the other one is working without any problem.

Hope this helps a bit.