Smart Board Flickering when connected to laptop

[DBadhen]

Hi,

 

I have a WIN10 laptop , when connected to a smart board 800 , both the laptop and IWB constantly flicker and the best way to describe it

is like if the are both trying to resize and find its correct resolution. soon as i unplug the VGA connection to board it stops doing it , i have changed the VGA

update the graphics card driver , need help driving me nuts.

 

Dav B

[mikkydoos]

Whats the projector model?

 

Need more info.

[JATSO]

Hi,

 

I have a WIN10 laptop , when connected to a smart board 800 , both the laptop and IWB constantly flicker and the best way to describe it

is like if the are both trying to resize and find its correct resolution. soon as i unplug the VGA connection to board it stops doing it , i have changed the VGA

update the graphics card driver , need help driving me nuts.

 

Dav B

 

Try changing the laptop resolution to 1024 x 768 or 800 x 600 and check the refresh rate .

[DBadhen]

Projector model is an epsom eb485i , i think , and i tried changing the resolution , starting with the lowest , and it does it again , and ive also learnt

yesterday a replacement laptop does the same thing , so its something to do with the board or projector.

[Grey-gear]

Does the projector have a different type of connection (HDMI, etc.) you can try?

 

If the projector is connected via a wall socket (wires in the walls running to the projector) you could try plugging a VGA cable directly into the project from the laptop.

 

Does the laptop do the same thing with a different projector?

Edited April 4, 2017 by Grey-gear
changed first question after rereading the first post

[DBadhen]

tried new VGA as well , will also try a hdmi see if that fixes it ,its a primary school i support , half a day a week, so when I'm in next i will try direct connection , barring that ringing smart .

[Mic_Impero]

Ground loop? Does it happen when laptop is running on battery? If so and you can, try a different breaker or buy a VGA ground loop isolater to cure