Need a little help

jshake

Member

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Joined

Jan 29, 2012

• Jan 28, 2015

• #1

Can someone that has built a open air test bench tell me how to ground the system. I have a test bench set up. The problem I am having is, If I go to connect anything to any of the open usb hubs. The computer will shut down. The cable does not even have to be inserted , Just touches the metal of usb header on motherboard. The PSU is grounded the house wiring. Not sure why this is happening. Any insite would be appreciated.

Thanks
jshake

 

ATMINSIDE

Sim Racing Aficionado Co-Owner

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Joined

Jun 28, 2012

• Jan 28, 2015

• #2

Touch the PSU when you put in the USB device and see if it still does the same thing.

 

Janus67

Benching Team Leader

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Joined

May 29, 2005

• Jan 28, 2015

• #3

What is your bench made of?

please post some pictures if possible.

 

Mr.Scott

Beamed Me Up!

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Joined

Jun 9, 2013

• Jan 28, 2015

• #4

Everything is grounded through your PSU.
You have a static problem, or no ground in your outlet.

 

OP

jshake

Member

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Joined

Jan 29, 2012

• Jan 28, 2015

• Thread Starter
• #5

This is the test bench ( HIGH SPEED PC ).

I will check touching the psu , While trying to insert usb. I am am going to attach a pic of test bench.
Thanks
jshake

 

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rayraysfunhouse

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Joined

Jul 15, 2014

• Jan 28, 2015

• #6

Is it just my pc or is that a REEEEAAAALLLY big picture??

 

OP

jshake

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Joined

Jan 29, 2012

• Jan 28, 2015

• Thread Starter
• #7

If this is a static problem. Would a wirie running to the outside and then connected to the metal of the workbench. I could then run a wrist band connection from me to the workbench. Would this solve the problem.

- - - Updated - - -

I will check touching the psu , While trying to insert usb. I am am going to attach a pic of test bench.
Thanks
jshake

 

OP

jshake

Member

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Joined

Jan 29, 2012

• Jan 28, 2015

• Thread Starter
• #8

No, it is not you do not know why it blew the pic up so big.

 

P

pcgamer4life

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Joined

Dec 30, 2004

• Jan 28, 2015

• #9

Should there be a strapping from the PSU to the metal that the motherboard is mounted to? It looks like the PSU is isolated by that rubber pad and doesn't make contact with the rest of the bench like in a traditional case.

 

OP

jshake

Member

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Joined

Jan 29, 2012

• Jan 28, 2015

• Thread Starter
• #10

Yes, I was thinking the same thing. The PSU just sits on a rubber pad. The motherboard sits on rubber stops and has two plastic alignment pins. It seems to me the motherboard needs to be grounded. Just unsure on how to ground it without shorting something out.

Thanks
jshake

 

D

Dlaw

Member

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Joined

Apr 26, 2012

Location

New York, USA

• Jan 28, 2015

• #11

I see a CoolerMaster PSU, correct? Which one?

Edit: Zoomed in on the pic, and found the model number. Could that be the cause?

 

Last edited: Jan 28, 2015

Mr.Scott

Beamed Me Up!

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Joined

Jun 9, 2013

• Jan 29, 2015

• #12

pcgamer4life said:

Should there be a strapping from the PSU to the metal that the motherboard is mounted to? It looks like the PSU is isolated by that rubber pad and doesn't make contact with the rest of the bench like in a traditional case.

Click to expand...

You have ground wires coming out of every connector on the PSU. They're all grounded through the PSU and into your outlet. It's not an isolation issue.