Hey A/V folks. I picked up an old second-hand CRT projector the other day for under fifty bucks for a little project I'm working on. It's a Sony VPH 1042q in good working condition other than a weird little yellow splotch in the picture. It has two input options: S-video; and 5 BNC connectors for RGBVH. I want to use the RGBVH because I'm using a circuit that I built specifically to generate the RGB signals and the separate connectors for each signals is just ideal for my use. However, after some research into sync signals, I'm afraid designing a circuit to generate high-precision H and V sync signals is a bit out of my depth. So, I bought a VGA signal generator on Ebay and just routed the Vsync and Hsync from that to the V and H on the projector. One issue that I'm running into though is that the resolution of the projector is definitely not one of the standard VGA, SVGA, etc. signals that the generator produces. So, while I'm getting images out of the projector, the sync stuff is definitely off.
Sorry for so much background, but I hope its all pertinent. This is pretty much just going to be used to project psychedelic visuals for a band I'm playing in, so at this point, I am considering building a circuit to provide the sync signals, even if they won't result in a perfect locked-in picture. My main issue is that I don't want to harm the CRT electron beam scanning mechanism or whatever by feeding it janky homebrew sync signals. Do you guys know if there would be any mechanical or electrical issues that could result from the H and V sync signals not having the proper blanking periods and pulse length? I don't mind if the image is all jittery and weird; in fact, it looks kinda cool. Feel free to tell me that this poor projector doesn't deserve this fate, cuz it does feels a little unceremonious using it in this manner. I really don't want to destroy an otherwise cool projector for my pet project.