I've just bought a 'new' Ask Impact 24 projection panel which I'm basically very please with. Good colours, contrast and response time.
However, it does have one slightly odd feature that I would like to be able to adjust. The projected picture appears to be in four quadrants that have slightly different levels of brightness. The two on the right are pretty much the same. The one on the top left is slightly brighter and the one in the bottom left is quite a lot brighter. This effect is (particularly the bottom left quadrant) very noticeable on darker scenes and very distracting. Adjusting the regular brightness, contrast etc doesn't change the levels of the quadrants with respect to each other of course, so this effect is always there.
Does anyone know if there is any adjustment inside the panel (e.g. pots) than can control the seperate brightness levels of these quadrants? If no-one knows I'll take it aparts and have a look, but don't want to do that if someone already knows the answer.
Out of interest does anyone know why the screen is spilit into quadrants like this? Does it make the LCD controller electronics simpler?
Thanks in advance.
However, it does have one slightly odd feature that I would like to be able to adjust. The projected picture appears to be in four quadrants that have slightly different levels of brightness. The two on the right are pretty much the same. The one on the top left is slightly brighter and the one in the bottom left is quite a lot brighter. This effect is (particularly the bottom left quadrant) very noticeable on darker scenes and very distracting. Adjusting the regular brightness, contrast etc doesn't change the levels of the quadrants with respect to each other of course, so this effect is always there.
Does anyone know if there is any adjustment inside the panel (e.g. pots) than can control the seperate brightness levels of these quadrants? If no-one knows I'll take it aparts and have a look, but don't want to do that if someone already knows the answer.
Out of interest does anyone know why the screen is spilit into quadrants like this? Does it make the LCD controller electronics simpler?
Thanks in advance.
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