I've looked through as many of the posts as I can, and haven't really found the information I need. Sorry if this is redundant.
I just received my first R606. I have a Windows 10 machine, and went through the steps to plug it in, including updating the drivers.
When I start cgminer, it says it's resetting the device over and over and then fails saying that it didn't find any chips.
I've tried on two different machines to ensure that it wasn't just a single machine.
Is it a bad unit? Is there anything else I can do to check before I ask for a replacement?
Thank you.
Well if you read many posts then you should know you need to forget about Win10. It SUCKS as it really screws up USB communication.
In the meantime:
1. What Power Supply are you using?
2. Set your frequency to 550Mhz.
3. Set your voltage to 4 or 5.
4. You don't say what pool your using, but use solo.ckpool.org for testing purposes with Bitcoin mining.
5. Use the "--gekko-noboost" or "--gekko-lowboost" options which were for trying to get Win10 to function.
Aside from that you need to setup a Ubuntu Linux machine or get a Pi 4 with raspian Linux.
Good Luck

Yeah, I've read the posts that Win10 sucks. But I've also seen users with success. So...I was hoping...Building a ubuntu Linux machine is more than I wanted to bite off but if I was so included, does one of the beginning posts have the complete steps to follow? Assume I know nothing about Linux (although I have ancient experience in Unix).
To answer some of your questions anyway:
1. I tried both using my current Power Supply which has ample bandwidth, and a left over Bitmain power supply from my L3.
2. Will try
3. Will try
4. I've tried both solo.ckpool and pool.ckpool
5. Will try
I guess I'm just surprised that ANY of these settings would prevent cgminer from seeing any chips.