Quote from: Andrey123 on September 04, 2017, 08:44:16 AM

Quote from: scryptr on September 03, 2017, 04:53:09 PM

PSU/RISER PROBLEM LIKELY--

I agree with Klassje. It is likely that a riser is bad. Old, skinny-version risers get really hot and sometimes melt with dual-mining, and even new risers go bad. It is interesting to note that if the problem occurs, the "511C" figure is common. I have had the same readout; the card was good but the riser was bad.
I would stop the rig and change risers before mining again. --scryptr

And which risers are better to take?
I have a 6 version with a black wire....like these ones: https://ru.aliexpress.com/store/product/Black-0-6M-PCI-Express-PCI-E-1X-to-16X-Riser-Card-Adapter-PCIE-Extender-with/1826735_32789606816.html?spm=a2g0v.12010608.0.0.81bf1c12u9nXF

RISERS ARE EVIL CREATURES--

Your riser looks ok, but there are many variations that look the same. I use a riser that is v006c or v007, depending on the manufacturer or the distributor. It has a PCIe electrical connector rather than a molex. I started changing out all my old, skinny risers when I noticed the thin power connectors melting.

I cannot give much advice for which riser, but switching out a riser will often solve the problem. The PCIe connector is more sturdy, thicker, and less subject to heat damage than a thin molex, once standard for floppy drives. The larger molex on your riser is often difficult to connect because the pins push out-of-position.

Keep spare risers handy, find a good source. I am in the USA and shop Amazon. MintCell is an Amazon retailer that has good risers, but even new ones fail.

Good Luck! --scryptr