25 Sep
2008
25 Sep
'08
11:11 a.m.
On 24 Sep 2008 at 20:16, Gordon JC Pearce MM3YEQ wrote:
Well, I think I have to, given that I am unlikely to get a photometer,
and even if I do, I don't know how I would verify that it was claibrated
correctly.
Sounds like you can hardly make it worse.
I'd be sore tempted just to "eyeball" the adjustments, myself. I imagine a photometer is essential if you care about
things such as
color accuracy, but perhaps just checking white balance may be close
enough.
My plan at the moment is to check some other components on the video
board, then replace all 3 resistors. Since the green channel is not going
to be affected much by this (12.7k -> 12.4k), I'll leave that alone, then
display a grey-scale pattern and adjust the gain and cutoff of the red
and blue amplifiers for neutral colours. It may not be perfect, but I
doubt it'll do any real damage, and if I ever do get a photometer I can
give it a tweak (it is my machine after all....)
-tony