UnkieRobbie

Thanks for the help, Voxel. I checked the connections and all was good, but I kept having the problem. Just on a hunch, I thought the problem might have been I signal that was too strong going to the TV. I kept playing around with different resistors on the wire coming from the video out. Eureka!! A 1k ohm resistor soldered in between the video out wire on the mod chip and the coax port fixed the problem. Now I have a razor sharp (not blown out) image in vivid color. Not sure why I needed the resistor, but it did the trick!

Ok, guys. I need some help, please. I had a great color picture via RF but I needed composite video. I followed the instructions and I got a picture, but it’s in B&W and the sides of the screen are cut off. I have white bars at the top and bottom and I can’t see the paddles anymore. Could someone take a look at the pic and tell me what I’m doing wrong?

I have this same problem. I was wondering if your solution worked and, if so, where you found it.

Here are the pictures that Programmer requested. I'm not happy with the way they turned out, but maybe they will be of some help. Also, I'm new to the retro gaming world and I don't have a lot of experience, but I'm happy to help in any way that I can. Honestly, there aren't a lot of IC's in this console. Everything I have read said that the bulk of the IC's were contained in the game cart. I can get pics of the cart insides of it will help you. If I can help clarify anything, please let me know.

Thanks, Programmer. I had wondered if it might be that easy. I tried bypassing the RF (connecting directly to the board), but my TV doesnt indicate a signal. Im guessing it needs amplification. Do you know of a simple amplifier that would work in this application? Im in the process of cleaning the electronics as we speak and will take some pictures while I have everything apart.

I have been fortunate to get my hands on a Coleco Telstar Arcade Model 6071 (the triangular one). The RF modulator has deteriorated and I need to convert this system to composite video. This is where I need help. It looks like it would be pretty simple to do, but I'm a newbie and I don't completely understand the chips and pins and I don't want to risk destroying the console by experimenting. I'm attaching some pics for reference. There is a single coax cable connecting the board to the RF converter. I would assume that this cable is carrying all of the video information. Can I just take this signal and convert to composite? Does anyone have instructions or pictures that are specific to the Model 6071? I would greatly appreciate any assistance anyone could provide.