HDMI shuts off computer

[hifismith]

Gateway Laptop M-151-X
ATI Raedon 2400 graphics card

I just got an HDMI over cat5 extender (HDMI from computer --> wall plate --> cat5 --> wall plate --> HDMI --> Receiver), got it? I plug the HDMI cable into the laptop and it turns off... immediately, like I pulled the battery and power out.

I connected the computer directly (HDMI from computer --> Receiver) and it worked just fine.

I connected my PS3 through HDMI-->cat5 and it worked fine too.

I've updated the ATI drivers, downloaded the new catalyst center for windows 7. Anyone got any ideas?

 

[zigzag3143]

Gateway Laptop M-151-X
ATI Raedon 2400 graphics card

I just got an HDMI over cat5 extender (HDMI from computer --> wall plate --> cat5 --> wall plate --> HDMI --> Receiver), got it? I plug the HDMI cable into the laptop and it turns off... immediately, like I pulled the battery and power out.

I connected the computer directly (HDMI from computer --> Receiver) and it worked just fine.

I connected my PS3 through HDMI-->cat5 and it worked fine too.

I've updated the ATI drivers, downloaded the new catalyst center for windows 7. Anyone got any ideas?

I dont think its this simple but. Cat5 is basically 4 conductors. Cat6 is 10 maybe 2 of the the four used connectors act like a ground? does the manual specify cat5?

Ken

 

[hifismith]

Thanks for responding Ken. The package does say "Cat 5/Cat 6 Wall Plate Extender Kit" but I could try another set of cables (I don't have any cat 6 laying around). Let me see what I can find.

The back of the box has more details. It says I need CAT5E-UTP to transmit 1080p. I don't know what that means. I'm going to google it. You might have figured it out. I thought there might be a ground issue.

Eric

 

[zigzag3143]

Thanks for responding Ken. The package does say "Cat 5/Cat 6 Wall Plate Extender Kit" but I could try another set of cables (I don't have any cat 6 laying around). Let me see what I can find.

The back of the box has more details. It says I need CAT5E-UTP to transmit 1080p. I don't know what that means. I'm going to google it. You might have figured it out. I thought there might be a ground issue.

Eric

Cat 5 "e" is enhanced and so can transmit more data (actually faster) but Im not sure if 5E has 4 wires or 8. Let me go google brb

edit from google cat 5 "e" has 8 wires (4 twisted pairs). Now I still dont know if thats the problem but im curious

Ken

 

[hifismith]

One of the connected cat5 cables specifies "Cat5e" the other just says "Cat 5 patch cable".

I'm going to swap out that cable for another. Here's hoping I don't crash again. Be back in 5-10 minutes.

 

[hifismith]

Sadly, that didn't work.

I forgot to mention that everything works fine if I start the computer with the cable plugged in. That's obviously not a solution if I want to plug in quickly or disconnect and reconnect.

edit: actually, the TV needs to be on during start-up or else the computer won't find it.

 

[iseeuu]

Sadly, that didn't work.

I forgot to mention that everything works fine if I start the computer with the cable plugged in. That's obviously not a solution if I want to plug in quickly or disconnect and reconnect.

edit: actually, the TV needs to be on during start-up or else the computer won't find it.

Here is some info on cables: How to Make a Category 5 /5e Patch Cable

Cat5 and 6 both are 4 pairs of wires, only 4 wires are actually used to connect computers in a network. The difference between 5 and 6 is the quality of the wire, the gauge, and its improved conductivity.

Question: Can you remove and reconnect the HDMI cable safely when directly connected between the computer and receiver successfully when both are powered on? (I am not recommending you do this)

Robert

 

[hifismith]

Question: Can you remove and reconnect the HDMI cable safely when directly connected between the computer and receiver successfully when both are powered on? (I am not recommending you do this)

Robert

I can disconnect/connect the HDMI cable safely when connecting directly to the receiver.

 

[SquonkSC]

Hi hifismith,

The HDMI socket is electronically terminated. (hope you know what i mean)

When pc boots, electronics will check if there is a cable connected.

If there is, the electronics will not apply the termination.

If there is not, it will.

When you boot without a cable attached, the connection is terminated.

By pushing in the cable, you make a power short circuit.

Greetz

 

[SquonkSC]

Have you tried connecting the HDMI end first to the computer, and then the Cat5 end to the plate?

 

[hifismith]

Hi hifismith,

The HDMI socket is electronically terminated. (hope you know what i mean)

When pc boots, electronics will check if there is a cable connected.

If there is, the electronics will not apply the termination.

If there is not, it will.

When you boot without a cable attached, the connection is terminated.

By pushing in the cable, you make a power short circuit.

Greetz

Thanks for the information. Anything I can learn about the system the more sane I become. I can't figure anything out logically at this point.

Is there anything I can do about the termination issue or is it a problem with the design of the port/card, and why does it only happen with this wall plate over cat5 configuration?

 

[hifismith]

Have you tried connecting the HDMI end first to the computer, and then the Cat5 end to the plate?

I have, and the computer shut down.

 

[SquonkSC]

Thanks for the information. Anything I can learn about the system the more sane I become. I can't figure anything out logically at this point.

Is there anything I can do about the termination issue or is it a problem with the design of the port/card, and why does it only happen with this wall plate over cat5 configuration?

I guess in the case of the two machines, both sides check before putting power on the connection. Kind of handshake.
In the case of the plate, the power is already on it on that side.

Not absolutely sure about that, but logically seems to be the case.

Good luck

 

[iseeuu]

Thanks for the information. Anything I can learn about the system the more sane I become. I can't figure anything out logically at this point.

Is there anything I can do about the termination issue or is it a problem with the design of the port/card, and why does it only happen with this wall plate over cat5 configuration?

It would seem logical, that if you are able to remove and reconnect the HDMI cable with out shutting the computer down, then you should be able to remove the HDMI cable from the computer, connect the cat5, and reconnect the HDMI cable with out shutting down the computer?

 

[hifismith]

I did a lot more testing. Here's what happened:

I simplified. HDMI --> Wall plate ---> cable 2 ---> wall plate and my computer shuts down.

BTW: HDMI --> wall plate --> cable 1 --> wall plate does not cause a short.

Notice that the circuit did not have to be completed with the receiver or the TV, or even with both cat5e cables. Whatever is happening in the wall plat is causing the mess. It also doesn't matter which order I do this (the wall plates are labeled either "input" or "output").

I tested this on my xbox 360 and it worked fine when I connected/disconnected while powered on. It was direction dependent (i.e. plugging 360 into "output" wall plate did not work).

 

[grant011]

short

i think i know what the problem is its ot a problem with the wire its a problem with the hardware its self the problem that you are facing is a difficult one at best, to put t simply you have a couple of pieces of metal touching one being connected the the motherboard which is most likly going to be the earth and the other is a live which will be connected to the socket of the HDMI, grab a tourch and have a look into you hdmi port see if you can see the live pin usually second to the left side of the port when you plug your hdmi into the connector it is shorting accross the leads metal outer and hitting the earth which in turn sends an electrical signal to the off button on your motherboard see if you can prize the live down slightly this should fix your problem, be care full and do not do this while to computer is on and take out the battery, remeber that you should always use a red handeled screw driver when fixing electicals as theese are deigned to keep you safe and to stop you from being electricuted if in dout contact your local comuter shop for further assistance or message me.