Burning plasma tests: the one hour test, part two

We've just tried a second round of burning tests out on our plasma, and the results were very surprising.  So: is our new test card better, or just less bad than the first?

Our original test method, which used the very challenging maximum settings for both brightness and contrast, produced results that were less promising than we'd hoped.  Even today, two weeks after our first overnight burning test, the traces of our test card are still visible on the screen.

That's why we tried a new test, with a different procedure and a new test card.

> A plasma screen: subjection to burning: Exposure for an hour then grey display - part two