HELP with Avalon 921 with power connection burned

[telescopiohubble]

Hello, I'm new miner Wink so please be patient with me.

I bought a used Avalon Miner 921 20th/s it started to mine good but after a couple of days, all the PCI power connections get burned. I realize the smell of burned plastic and immediately turned off. but now I have all the pic connector burned i don't know why this happened. Is there someone who can help me?

Why this happened? should I change the connector and keep mining or do I have to do something else?

Sorry about my English xD

I can show you a picture if it's necessary.

Also, my miner was working at 97 degrees I live in Venezuela the people who sold me the machine told me that temperature is ok.

[BitMaxz]

It seems that you running it at 120v that is why they get burnt.

What is your outlet voltage power?

This unit must be run at 220/240v if you run this miner at 120v I'm sure it will be burnt and damage the miner.

Just search about the outlet voltage in Venezuela and this is what I found.

All power sockets in Venezuela provide a standard voltage of 120V

[nc50lc]

bought a used Avalon Miner 921 20th/s it started to mine good but after a couple of days, all the PCI power connections get burned. I realize the smell of burned plastic and immediately turned off. but now I have all the pic connector burned i don't know why this happened. Is there someone who can help me?
-snip-
I can show you a picture if it's necessary.

That usually happens when the miner draws more power than the cables can handle.
Yes, pictures are necessary to know if it's safe to use, specially the power supply that you were using.
Since you're a newbie, you can only post the images as links, but use [img][/img] tag instead of [url][/url]

I'll ask a Mod to move this to Bitcoin > Mining > Mining support to get support from the right people.

[NotFuzzyWarm]

Also, my miner was working at 97 degrees I live in Venezuela the people who sold me the machine told me that temperature is ok.

Is that 97F ambient air temperature where the miner is located or 97C as reported miner temperature? The 921's run hot and mine routinely reported 98-104C miner temperature with no problems. That is with room air temperature being up to 92F (33.3C). They ran that way for over 2 years before I upgraded to the A10 series and took the 921's off line.

Regarding the PCIe connectors, what PSU does it have?
The A921 requires one rated for at least 1,800W and when running hot it will pull up to 2,100W. If done properly, the higher the wattage a miner PSU is rated for the thicker the wires used for the cables, 16ga is preferred. That in turn better pulls away heat from the connectors. A PSU that is too small or cheaply made will use thinner wires and possibly instead of copper, aluminum wires which is even worse.