Problem with New Promethean Panels and various laptops

[Joe Halpin]

Hi everybody.

I am just wondering if anybody has come across the issue below.

 

When we install aa New Promethean Panel and connect it with any HDMI lead that is longer than 3mtr. to a HP 250 G7 Laptop we keep getting one of the following errors

 

No image

Flashing image

Or

Image unsupport

 

If we use a 3mtr. cable everything is fine. But the problem is the teachers desk is further than 3mtr. from the panel.

 

The panel works fine with my own HP laptop that I use for installations.

 

I have tried the school laptop on other HDMI devices and they all work fine.

 

It is just the HP 250G7 + 5mtr. HDMI lead + Promethean Panel combination that I cannot get to work together.

 

I am having the same issue in a number of schools.

 

It does not appear to be anything to do with Win 10 versions or settings

 

Have spoken to Promethean and they are baffled.

 

Any ideas would be appreciated.

 

 

 

Kindest regards

 

 

Joe Halpin

 

Comdex Technology

Oldtown

Johnstown

Navan

Co. Meath

C15CY68

 

Phone 046 9077086  

Email  jha...@comdex.ie

 

Thank you for supporting local Irish jobs

 

[Laurence Cuffe]

Obvious suggestions time,

But have you tried changing the longer cable for another one?

Best

Laurence Cuffe

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[Colin Vaugh]

Joe

We've seen some HDMI issues almost exclusively with HP laptops in the last while. It happens with both Projectors and Interactive Displays. 

Our conclusion is that there's insufficient HDMI signal power and it reduces with longer cables. 

A temporary workaround (while not ideal) is to use a HDMI to VGA converter Or use the built in ScreenShare feature.

Also worth trying a Powered HDMI splitter.

Feel free to give us a buzz if we can help in any way.

Colin

VaughTEC

--

[Brian O'Mahony (St. Brogan's College)]

Joe,

 

It would be worth trying a USB to HDMI  adapter on the laptop if you have one handy and connect the HDMI cable to the adapter.

 

I’ve seen issues with HP laptop HDMI ports too in the past. When we used the USB to HDMI  adapter it solved the problem.

 

Le dea-mhéin/Kind Regards

 

Brian O ’Mahony

 

Príomhoide Cúnta, Comhordaitheoir na TFC / Assistant Principal, ICT Coordinator

 

Coláiste Bhrógáin Naofa / St. Brogan’s College

Cill Bhrógáin / Kilbrogan

Droichead na Banndan / Bandon

Contae Chorcaí / Co. Cork

P72 X259         

 

Teil / Tel: 023 8841120

 

Web:   www.sbc.ie

Email: brian....@sbc.ie

 

 

 

From: cesi...@googlegroups.com <cesi...@googlegroups.com> On Behalf Of Colin Vaugh
Sent: Thursday 25 March 2021 19:21
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Subject: Re: [CESI List] Problem with New Promethean Panels and various laptops

 

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[Joe Halpin]

Brian

Thanks – probably the only thing I have not tried.

To view this discussion on the web, visit https://groups.google.com/d/msgid/cesi-list/DB6PR10MB1799C4D7C3FC7437279AD33481629%40DB6PR10MB1799.EURPRD10.PROD.OUTLOOK.COM.

[v...@valgavin.biz]

Hi Joe

I have had the very same issue with installation of Clevertouch Interactive panels with a few HP desktop PC's using HDMI cables longer than 3Mtrs and using a distribution outlet box, my fix was to use a higher quality cable and bypass the outlet box I have ordered some HDMI extenders from https://ie.rs-online.com/ and will check these over the midterm.

I have been far too buy to test it yet but I think it might be a video update driver from Windows 10 as I have 2 of the same desktop PC's connected to Clevertouch panels which haven't been updated since before Christmas and they work perfectly well with 5 Mtr HDMI cables

I will test this over the next few weeks and let you know the outcome

Val

[Anne White]

I’ve had this issue with Lenovo laptops too 🙄 awful nuisance 

Sent from my iPhone

On 25 Mar 2021, at 19:21, Colin Vaugh <co...@vaughtec.ie> wrote:



To view this discussion on the web, visit https://groups.google.com/d/msgid/cesi-list/CAB-%3DPOAduiD_86R25YRdYXFC%3DfWsTY_mQHP9E6xm%2B3U2_fzE8Q%40mail.gmail.com.