CRT Calibration

Just a quick update on the 21″ Sony Trinitron Last weekend. After spending some time with this TV I’ve managed to get it calibrated and fixed a few issues. Sometimes these old TVs need a bit of tweaking after years of service. Sometimes its due to the consoles outputting a slightly different signal that was calibrated for in the factory. This can cause the image to be not cantered correctly.

Here is before (Left) and after (Right) photos of the 21″ KV-X2182U.

As you can see, the image is now much better aligned. I was also able to make improvements to the geometry to straighten the edges near the screen edge.

All the adjustments were done in the Service mode. Photos really don’t do justice to a CRT image.

Another problem I fixed was to disable the Auto 16:9 switching mode. Depending on how the scart cables are wired, this TV would almost always go widescreen on AV1-RGB. It was annoying to have to press the aspect button the remote every time. In Service TT mode, I switched off TT14 (“Forced AV 16:9 Detection On/Off”). Also when using an RGB signal with composite video for cync it would default to composite mode. I’d have to press the AV button again to access RGB mode. TT18 enables RGB priority on this TV. Perfect, now the TV just uses 4:3 and RGB (if present) as default. 

I’ve been very impressed with this set. The image is so clean and sharp.  It might even be one of the best screens I’ve ever seen for displaying 240p, apart from professional PVMs. 480i is also clean and flicker free. Sony really knew how to make a good TV. For my tests I used the 240p Test Suite from my Mega Drive for most of the calibration, then run it again from the Dreamcast to check 480i display modes. Now I’m happy with this units setting I’m going to give it a clean inside and try to remove some of the dust from the chassis board.

Soon I’ll take a closer look at the 25″ TV.

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