Quote from: marvingateway on March 07, 2015, 05:54:19 PM

The different variants of the power supply have a different cause.
The 6-pin PCI-E connector is specified for 75 W.
So 2 of them brings 150 W.
But you will need about 400 W for the miner.
The cables from the power supply can thereby be warm.

3 connectors brings 225 W.
So the cables from the power supply is less stress in this case, since the load is distributed across multiple cables.
In my opinion it is not another reason for the 3rd connector .

here are the images of the boards

the damaged one with 3 pci-e connectors
http://i.imgur.com/qo6zDpt.jpg

as i read the forum cgminer on tl-mr3020 is more stable so i went shopping today 1 brand new tm-mr3020 router flased with latest techobit image, 1 powered usb hub 12v 3A brand new also

same thing the board is acting exactly like in windows version of cgminer

http://i.imgur.com/lCpnxHM.png

i'm out of any other ideea and technobit is not replying to my mails i consider myself screwed up. For 70 technobit failed i wonder if this amount worth so much to loose a possible customer, i guess yes.