Ctouch HDMI port issues (I think)

[Tinribs]

All,

We have a few Ctouch screens in one building. We're having an odd problem with one of them.

A few months ago the computer attached to that screen stopped detecting it. We replaced cables, went directly to the screen (avoiding the wallbox), tried both HDMI inputs on the screen itself. Nothing would work.

We moved a known working PC into that room and it started working. We put the not-working computer in an office where the HDMI port wouldn't be needed and all was good. Until last week when the same thing happened in the same room with the PC that was working before it was moved and had been working fine. All the same tests were done and the only thing that would connect to the screen was another, different (ie third) PC. This worked and all was fine. Until today when THAT PC, the one that was working on Friday last week, suddenly refused to connect to the Ctouch. All the usual tests were carried out and nothing worked until i put another (fourth) computer in the room. That is there now and as far as I am aware, still working.

I refuse to believe that we have had four computers all fail with exactly the same fault in the same location in the space of a few months. I just don't understand what the cause could be. Is it possible that the HDMI ports on the Ctouch could be the problem? IS there enough power in an HDMI cable - going BACK to the computer - to blow something?

The one thing that hasn't been done, to my knowledge, is to try one of the no longer working computers on a different Ctouch....

Any other ideas?

[Danp]

I've not had any issues with our CTouche screens in relation to HDMI. I've had one network port fail and their support has been fantastic, sent the firmware update via Dropbox for me to install via USB and when that did not resolve the issue, they have arranged an onsite repair.

[TriggerHappyUK]

I had a flat screen TV once that the HDMI ports all suddenly stopped working. A bit of Googling later revealed that the likely cause was hairline cracks in the soldering due to the TV heating up and cooling down.

 

Followed the instruction to take out the board and pop it in the oven to 'reflow' the solder. To my surprise, it worked!!

 

Although, if your CTouch is still in warranty. I'd get them out to repair it.