Re: Commodore 1084s RGB Cable Question.

do you notice any change in the picture when you adjust the vertical hold control? It's usually found on the front of the monitor. The rear panel or internal controls are for height and linearity.

On the front on my monitor, there is a (left to right) Vol, Colour, Contrast, Brightness and H Phase. On the rear of the machine there is a Horizon Size, Vertical Size and Vertical Shift. When the monitor is on, using the CVBS connectors on the back, I can use it on my C64 (or C128 in 40 Col), and all the slider knobs work, if I twiddle with the ones at the back, the screen will change in size and position. And if I twiddle with the front ones (Obvious Col, etc) the H Phase, again the picture will change. But when I put it into 80 Col mode on the C128, and push the button at the back to tell it that I'm using the RGB, not the CVBS, I only get a major response from the buttons on the front (Col, etc), and all the H Phase does is shift the screen slightly left and right. When I mess with the Vertical Size, it makes the letters increase in size, but still they are flashing past me. Some times when I twiddle with the Vertical Shift I see an ever so slight change, but I don't know if that is my eyes playing tricks on me. Sometimes if I turn the monitor off and back on whilst it is connected, the display is slightly different. I was going to try the old "Bump" trick, but I fear it might make matters worse....another friendly dry solder joint may rear it's ugly head.

Paul,
It's hard to know whether you should find that out now or later if such a fault then causes another problem... your call. It sounds like all the controls are responding normally, so the connections to them are OK. It seems every time I try to picture a monitor in my mind so I can give advice, one pops up that is different than what I have seen. Yours has no "tint" control and that tells me the monitor is a PAL version. No matter, but on this side of the world, such models are rarely seen.
On your monitor, there may be a hidden (a hole in the panel) screwdriver adjustment for vertical hold behind the front panel, but it should be marked as such. They sometimes also put a master brightness control there too, usually unmarked. If you adjust that one, note the initial position so you can put it back. Otherwise the brightness level may end up too high or low for the front panel user brightness control to handle.
Bottom line: there is probably nothing you can do to restore that monitor, so you may as well use it as is for 40 columns only. We tried.

Ray
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