NxtOp

I agree. The composite color out via the rca breakout on my cable is a bit more blurry, but I don't intend to use the composite breakout...just the s-video connector.

MR Robot - connect the wires to the PCB. This feeds them to the video connector and eliminates the signal from the board through those ferrite bead components.

And....THERE'S THE MAGIC SOLUTION! Flashjazzcat and DrVenkman nailed it. So I didn't receive the secret decoder ring from someone that told me THE xxxxING INSTRUCTIONS ARE TYPED WRONG AND REVERSING THE COMP. VIDEO AND LUMA CONNECTION AT L7 & L9!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WHY ARE THESE BAD INSTRUCTION MANUALS STILL BEING PRODUCED AND INCLUDED WITH THE UAV's???!!! Come on TheBrewingAcademy! It's bad enough that I have to watch for dumb crap that I can do in the implementation, but inexcusable that anyone should have to work this hard to decipher the dumb work someone else is misleading folks with in the damn manual------- and NO MENTION OF IT IN OVER 30 PAGES OF THE UAV REV. D THREAD EITHER!!!!!!!! Maybe it's on Pg 36 of the 48 page thread--- shame on me for stopping early! OK, now that the RANT is over............ The video is awesome from the UAV. Thanks to all you guys that gave this thread a read and tried to lend me a hand.

Yes, I have a multimeter. Will post the pinouts. I have not tried another display, but I will --- good reminder to not trust that piece of the puzzle.

Current cable is this one from 8BitClassics.com: (I also tried one from Herculesworkshop.com) I haven't checked pin-out of the cables. I'll have to do that and post the pinout I guess.

Alright. Lots of photos to try to avoid anybody spinning their wheels on advising install errors or such, so I hope that's helpful. I installed the UAV Rev. D in this 800XL and it resulted in much crisper graphics, BUT it added vertical jailbars (gaps) between lines consistently across the entire screen and regardless of the source of graphics (I checked many different cartridge games but I'll spare you their extra photos as it's all consistent and the same visual results). I'm outputting directly to S-Video and into a Dell flat panel that has S-Video port and composite port. I cross-checked multiple video cables with NO difference either in results. I hope someone here (or several of you) can enlighten me as to the potential source of the jailbars and what I can do to cure it. My other 800XL with a UAV does NOT have the jailbars. I've searched here on AA and on YT for potential things to diagnose and fix the jailbars for over a week (and I've read through about 30 of the 48 pages of the UAV rev. D thread), so I felt like it was time to post and beg for help. So, here's the photos. Here is BEFORE MOD INSTALL: And now here is AFTER MOD INSTALLATION: Now the questions come flooding in about whether I buggered the install steps... Here's the confirmation in advance--- NO, I have quadruple-checked that prior to posting. Yes, the jumpers are set to 800XL for REV D board jumpers config----NOT Rev C jumpers. Yes, I'm capturing Color In from R45 near the 4050 socket (it's underneath the UAV). Yes I cut the UPPER end of L7 & L9 (nearest rear of board) and connected to Luma & Comp video correctly on the UAV. Yes I tried grounding to the resistors around R66 prior to my current ground connection from under the rf modulator (NO difference on either ground source). Yes, I connected the Pin 5 (Chroma) on the monitor port connector to the UAV I don't mean any offense by sharing these affirmations in advance, I just want to help anyone with these questions or suggestions to save needless posts and logic circles (I've seen that cycle demonstrated a bunch of times over the >30 pgs of the Rev. D thread and other threads I've read through trying to find cause/solutions. I hope someone can guide me on the diagnosis of this. Thanks in advance! EDIT----- Interesting new observation....while the screen is cycling on screensaver at the Ready prompt, this example occurred:

Yeah, I think all 3 of my units actually have Sally's

Here are my 3: All have 48K and uncased memory and personality boards. 443044 / 143 = NTSC / GTIA (14Week of 1983?) - IMG_2344 450379 / 163 = NTSC / GTIA (16Week of 1983?) - IMG_2345 and IMG_2346 And... 429930 / 083 = NTSC / ? (16Week of 1983?) - IMG_2347 2nd Label: AW 471718 - 2-22

I'm a former kid that appreciates those things! My first computer was an Atari 800 that my Dad gave me for Christmas and now I'm giving in to my nostalgia and starting my collection to play with. I'm also working up a replica of our setup to surprise my Dad with and see if I can get him re-playing some of the games we enjoyed when I was a kid. Great fun!

Yes, those resistors are all connected to the same ground plane (visible if you could examine it closely...not sure if its discernible in my picture). It's the same ground plane as underneath the RF modulator and the 5-pin DIN video out.

I'm definitely on the Rev. D jumpers. I have the install instructions from The Brewing Academy that came with the card and the docs are very clear on those. What I wish someone would revise is the wiring photos to help validate clearly for new installers as the ones that exist are not that great - same color wires or pealed-off ribbon cables of non-distinct colors were horrible to interpret against my work. I believe the docs even mis-label the L9 vs. L7 in its illustration--- that does not help first-time UAV installers get it right. I wasted a bunch of time searching for more validation of my work in the threads because those photos lacked distinct clarity. My initial output of color screens but not perfect screens led me to follow some of the posts suggesting that Luma and Composite might be reversed and caused my experimentation. That's when I committed my accidental powered-on plug-in. Since then I haven't gotten any real color screens. I may be making a big mis-interpretation at this stage though since I don't know how to work with the machine with the U1M installed. So, off to the learning/testing with the U1M and trying games and such to perform better testing! Like you suggest--- try loading some programs that use color and get more comparisons.

Thanks Dr. Venkman and Sugarland... So, Here's a photo of the install attached (I bent the wires for the photo to try to make it more clear where they connect) I wired: L7 to Comp video L9 to Luma L7 & L9 beads are clipped at the rear-end of the board facing connection and bent upwards for no contact R45 to Color In R66 (bank) to Ground J2 DIN Pin 5 to Chroma You can also see in the pic a Black wire pigtail soldered to the ground plane from under the RF modulator (removed) that I tried as an alternate to the ground-side of the resistors at R66---- to no affect. I have tried driving video with my 8-Bit Classics cable through both Composite and S-Video to 2 different upscalers converting to HDMI for my Scepter 27" LED monitor and another composite-only upscaler to HDMI... no differences across the various attempts. Upscalers are a RetroTink 2xPro, a Tendak Video converter, and a generic AV2HDMI (amazon/chinese, 3" square black unit---I'm sure you've seen these for like $13). And my additional UAV's haven't arrived yet for additional tests OMG!!!!!!!!! I just figured out I've been reading through the thread "New video upgrade coming soon!" that catalogs the trials and tribulations from UAV early Rev. through development of the Rev.D! NOT THE THREAD OPEN IN ANOTHER CHROME TAB "The UAV Rev. D Video Upgrade Thread"!!!! I'm on page 29 as I discover this (FACE-PALM!). Now to start over at the beginning of the 46-Page Thread! That's what I get for having too many tabs open! In the pics below, the screen image with no color blooms is sourced from the S-Video, and the Composite is showing the color 'blooms' at the edge of lighted pixels (I hope that makes sense):

Can I get some help? Anyone? I'm reading through the 46-Page Nightmare Thread known as the UAV Rev. D discussions trying to find the magic needle in that chaotic haystack that might guide me, but I'm only up to Page 28 so far and no real insight or solution (And I mean REALLY reading). Please don't think I'm deriding the UAV...I'm impressed with what everyone has said/shown so far on its capability and anxiously looking forward to installing it on 3-6 more Atari 8-bits I have. But I'm dead in the water right now. Please help if you can.

If someone successfully installed the Rev. D UAV in an 800XL and then were Stupid enough to accidently insert the board into the chip socket while their 800XL was powered on, what damage if any would you expect from that stupidity? I had a good, working install of the UAV as best I could tell...though I was investigating some slight ghosting in the display. I was trying to confirm if I had the Luma and the composite video reversed (I had only done basic boot-up display to the Ready prompt and the initial U1M boot screen, no games or fancy displays). That's when I managed to forget I was powered on and inserted the UAV into the chip socket. Now, I can only get black-and-white output or a over-driven signal that has color halos on the white lettering/borders (if that makes any sense). I added the U1M mod to this machine after installing the UAV--- and for clarity, both were working prior to my oops. I've already ordered a couple additional UAV's, but they haven't arrived yet to allow me to do any cross-testing with this or a 2nd un-modded machine I have. I'm just driving myself nuts guessing at this point.