Posts Tagged ‘solution’

Diagnosing Dell OptiPlex touchscreen problem

Sunday, January 3rd, 2016


Slightly strange but logical one. We recently used a Dell E2014T 20 inch E-Series Touchscreen on a job. Worked fine until we got it on site and then the screen’s touch accuracy went haywire. On-screen buttons didn’t activate and some areas of the screen caused the touch area to seemingly warp and cause false cursor positioning.

We noticed a slight pattern to the ‘warping’, mostly to the left but also in a strange diagonal. We fired up a paint program and drew lines across the screen to reveal the distorted areas. The ‘ah-ha!’ moment was when we realised the screen was an optical touchscreen. The ‘OptiPlex’ system uses a series of infra-red lights and detectors located around the edge of the screen. By placing your finger on the screen, it breaks several of the beams and your finger’s location can be triangulated.

The distorted lines you can see in the image above is evidence of the screen going ‘wonky’ along definite diagonals. On closer inspection, there were small specs of sawdust in the screen border. A quick squirt of compressed air and the screen was back to normal.

Also, if you’re planning to use this monitor (or a lot of low-cost touchscreens like the the Mimo Magic Touch series) on a Mac, you’ll probably have a issue finding a driver. Apple just don’t seem to support any touchscreen standards. The only 3rd-party drivers we’ve managed to get to work are from Touchbase. They cost money but it may be the only option.

YouTube problem solved…

Monday, December 1st, 2008

I’ve been blighted, as have many others, by YouTube video appearing blank and simply stating “We’re sorry, this video is no longer available.”.

There have been a couple of suggestions, like restarting your router, hard coding your IP, using an IP tunnel application, turning of Google Web Accelerator and so on. Some suggested it was a YouTube caching issue or an IP problem but it was also a bit random. My own Ducati Exhaust video stopped working while my Halo Soundtrack video was fine. When I’m at work, some of the videos that work at home failed, and vice versa. I use a Mac at home and a PC at work. Both use Firefox but all browsers seemed to do the same thing. All-in-all verry confusing.

However, it turns out it’s none of that. I’ve just updated my flash player from to and all’s well again. While I’m happy it’s all working, it’s also a little worrying that the big media owners and entertainment portals are so reliant on something as ‘simple’ as a Flash version issue.

If I was YouTube, I’d make this solution visible on the homepage (that’s if anyone actually visits the homapage). I’m supposed to be clever and if it escaped me, it’ll be escaping a fair few others. My impression of YouTube was suffering if I’m honest, thinking they’d become too big for their architecture to cope with.

But now I can check out all those vidoes of kittens again. Karma restored.