bsalapek

Just for closure on this thread, I was able to repair the Coleco and fix the video issue. Thank you Hannacek for pointing out the adjustment screws on the RF. The capacitor I bought to replace C70 was this: http://www.ebay.com/itm/271827169817?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

So I have a new issue and wonder if someone can help me. Upon opening the Coleco and inserting a cart, I inadvertently damaged capacitor C70 (which reads 101 J) right beside the cart slot. My motherboard is revision H2-1. Checking out the forum, Rex had pointed out that the 101 J capacitors are "100 pf 5% ceramic capacitor" but later mentions that different revisions of motherboards used different capacitors. Are there diagrams somewhere for these motherboards I can reference?

Hannacek - I had opened up the RF Mod while checking out the system, but had no idea about an adjustment on it! I am excited to try it out and see if it works! Is it ill-advised to adjust the RF while the Coleco is powered on and hooked up? I can't imagine how to get a good picture otherwise without a lot of trial and error

Just an update: I realize that this kinda was a rant lol Sorry about that. I got a new RF cable with a RF->Coax converter on the end and the 1 Colecovision to work PERFECTLY! I was very happy about that. The other one has a much clearer picture but is still in Black and White. I fiddled with the channel select switch and it didn't help. I plugged in an atari expansion module and that is in Black and White, too. I have ordered the AV Mod and will see if that helps at all. Hopefully it does!

Yesterday I acquired two ColecoVisions in a box of random old video game stuff. They have original power bricks but an NES RF Converter cable. I tinkered with them for a bit and was under the impression that they did not work until I bumped the RF connection. With a little fiddling of the RF cable connected to the back of the console (rotate, pull out, reattach...), I am able to get picture and sound on the TV. The picture is a static-y mess that flickers color to black and white a few times before going to black and white full time. The sound, on the other hand, is fine. Reading a bit on here has pulled me in a few different directions. It doesnt seem like the on/off switch/video issue since it is not scrolling. I found another thread, which seemed more along my issues (https://atariage.com/forums/topic/200963-video-output-issues-with-my-colecovision/) where it was attributed to the NES RF converter cable. It almost seems like a combination of an improper RF converter and bad contact on the RF output of the system. My first inclination here is to install a composite video mod (which is the direction I would like to go with these consoles anyways). Does it seem like I have approached this in a logical fashion? Is there anything I have 100% skimmed over that should be addressed before trying to mod it? Thank you for your time!