PC power and Cooling PSU /w 19pin MB connector!!!

llubbull

Honorable
May 4, 2012
17
0
10,510
I assembled a new PC last week.
-Corsair 500R
-PC power and cooling silencer MKII 750W
-Gigabyte Z77x UD5H
- i2700k
- gtx 670 evga
- Mushkin enhanced redline 1866
- Noctua NHD-14
- OCZ vertex 4

- Everything was running smooth until yesterday (CPU OC'd to 4.5GHz (Max temp under stress 65C, GPU OC'd to 1200, max load 67C). Here is the funny thing, I got my HD (TB, WD caviar black, 7200, 6GBs) only yesterday evening, so I hooked it up, now the PC don't turn on. There was no beep no LEDs blinking. Next thing was to check the power supply, I did the paper clip trick and it turned out the Power supply was OK.

- It took hours though eventually I figured that there is something with the motherboard power connector (20+4 pin), seemed like loose contact. Needless to say, it wasn't just any loose contact but the 20 PIN was missing 1 pin all together!!!!!!!!! there were only 19 pins.

- Now I don't understand this. if the connector is missing 1-pin, how did the computer functioned until now? Do you think think might have damaged any of my hardware components on-board? Please provide me a detailed insight to this. I am worried if I have compromised the whole rig. May be I am just paranoid, idk.

- As it is evident, is definitely the POOR :fou: quality control from PC power and Cooling, if this indeed damaged any of my components can I file a claim?

- I am getting a refund from Amazon, also ordered a Corsair HX Professional Series 850-Watt 80 Plus Certified Power Supply Compatible with Core i7 and Core i5 - CMPSU-850HX.

I look forward to your comments, thanks in advance.
 
Solution


It's missing the -5V pin/wire and it's not a problem (only needed for VERY old peripherals). NO newer PSU's have one. The problem doesn't lie there, trust me.

Take a look and note the missing pin.

all20plus4.jpg


If you tried to file a claim for that, they would just laugh at you. Not saying there may not have been something wrong, but I promise you that the "missing" pin/wire wasn't it.

llubbull

Honorable
May 4, 2012
17
0
10,510


I checked this, cable And the pin are missing. There are only 19 wires.
 


It's missing the -5V pin/wire and it's not a problem (only needed for VERY old peripherals). NO newer PSU's have one. The problem doesn't lie there, trust me.

Take a look and note the missing pin.

all20plus4.jpg


If you tried to file a claim for that, they would just laugh at you. Not saying there may not have been something wrong, but I promise you that the "missing" pin/wire wasn't it.
 
Solution
That missing pin is not the problem. Look at any modern PSU. If the missing pin is between a red and a black wire, it used to be a white wire carrying -5 volts.

ATX 2.01 specification in 2004 removed the requirements for the -5 volt output. The missing line is not causing your problem.
 

llubbull

Honorable
May 4, 2012
17
0
10,510



Thanks for clarifying that part, which obviously I wasn't aware of, neither did the booklet came with the unit.

In any case the problem doesn't go away, the moment I touch the mobo power connector the system goes down. So, got to be something else with the connector, any ideas?
 

llubbull

Honorable
May 4, 2012
17
0
10,510


I am getting a refund for this from Amazon, before that I will swap it with the Corsair HX850, which will arrive today. I will post the results tomorrow. Fingers crossed.