Author Topic: HDMI cable - are shield wires exchangable ?  (Read 2475 times)

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Offline boo9

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HDMI cable - are shield wires exchangable ?
« on: October 31, 2014, 03:23:12 pm »
A connector for HDMI cable broke (the cable comming out of a wall , no way to replace whole cable)

I am going to cut off at broken connector and solder new cable with good connector.

I rung up group of 3 wires in a common foil shield and the pins are
wire1 - pin1 - TDMS Data2 +
wire2 pin3 - TDMS Data2 -
wire3 pin5 - TMDS Data1 Shield/Ground)

according to http://en.wikipedia.org/wiki/HDMI and other sources, the wire3 in data2 group should be leading to pin2 "DMTS Data2 Shield/Ground", but it does lead to data1 shield/ground.

Is this OK ?

Are the shield/ground wires from each group (3 wire groups, there are 5 such groups, each shielded with separte foil shield) brought to same point at the device ?

 

Offline Alex Eisenhut

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Re: HDMI cable - are shield wires exchangable ?
« Reply #1 on: November 01, 2014, 02:48:52 pm »
A connector for HDMI cable broke (the cable comming out of a wall , no way to replace whole cable)

I am going to cut off at broken connector and solder new cable with good connector.

I rung up group of 3 wires in a common foil shield and the pins are
wire1 - pin1 - TDMS Data2 +
wire2 pin3 - TDMS Data2 -
wire3 pin5 - TMDS Data1 Shield/Ground)

according to http://en.wikipedia.org/wiki/HDMI and other sources, the wire3 in data2 group should be leading to pin2 "DMTS Data2 Shield/Ground", but it does lead to data1 shield/ground.

Is this OK ?

Are the shield/ground wires from each group (3 wire groups, there are 5 such groups, each shielded with separte foil shield) brought to same point at the device ?

Can you use the existing cable as a "fish" to pull in a new one?
*Except AC/DC adapters on eBay. Avoid them all!
 

Offline boo9

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Re: HDMI cable - are shield wires exchangable ?
« Reply #2 on: November 01, 2014, 05:18:46 pm »
> Can you use the existing cable as a "fish" to pull in a new one?
No, the cable is walled w/o any encasing pipe.
 

Offline Richard Crowley

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Re: HDMI cable - are shield wires exchangable ?
« Reply #3 on: November 01, 2014, 05:22:30 pm »
For practical purposes, it probably won't make any difference.  All the grounds are likely joined together at the connector or very near the connector any way.  It indicates rather sloppy manufacturing (where they don't distinguish between the several ground conductors).  But, assuming it was working before, it should work again.
 

Offline boo9

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Re: HDMI cable - are shield wires exchangable ?
« Reply #4 on: November 01, 2014, 05:41:56 pm »
I just rung up a new (different) cable (which is to replace the broken one) and I see same ping group scheme (1,3,5), (2,4,6) (7,9,11)
Hmm....could HDMI WIKI be wrong ?
 

Offline Richard Crowley

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Re: HDMI cable - are shield wires exchangable ?
« Reply #5 on: November 01, 2014, 06:50:30 pm »
All of the HDMI pinout references I looked at (only the top half-dozen) agree with the info on Wikipedia.
Perhaps you have discovered that it doesn't make much difference which ground is which.
 


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