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Everything posted by hueyjones70

  1. I recently attempted the SV 2.1 on a 1200XL and somehow managed to botch it up. I couldn't get a video signal at all so I inserted a UAV to sweep my errors under the rug. I have another that I plan to try once more to perform the mod correctly. When I do that I will remove the RF and use that hole for the Composite cut-off switch and use the channel switch to allow for a two OS (XL and Omniview) configuration.
  2. I found that I was using two different sets of instructions. When I adjusted everything to fit the instructions in this thread everything worked as it was intended. Everything is now good.
  3. I did copy a set of instructions that had 9, 11, and 12. I also saw a version that said to cut a trace on the MB.
  4. I can't tell you how many times I read 11, 12, and 13 and didn't see that I had 9, 11, and 12. Thanks.
  5. The Option, Select, Start, and Reset work as they should with PAC-MAN. If I pull the basic EPROM, the computer does the same thing as it does with the EPROM installed. I have used 2 different EPROMS. I got them from NEZGAR and I have used maybe a dozen of them and had no problems. Here are some pictures of the mod. When I changed EPROMs I decided to use a connector instead of soldering to the IC. I used tiny pieces of a dual wipe socket. I did two of the wires on the underside of the MB.
  6. Option checks out with the keyboard self test. I will check its performance on a game. I will post pictures later.
  7. it makes the same sound that I hear with my other non 1200 Ataris. I am running an 800XL OS, and I installed a BASIC C Eprom. I was under the impression that the computer would boot to basic. It also boots to mem test when I boot with Option pressed.
  8. I have semi-completed the mod. The computer now boots to self-test unless I have a cart inserted. If I have a basic cart inserted everything seems normal. I believe I have faithfully followed the instructions and I have triple checked everything but i often hard to detect your own mistakes.
  9. I am working on this mod. When the instructions say to pull out all of the jumpers except 11, 12, and 13 and my 1200XL doesn't have jumpers in those places, am I supposed to insert jumpers in those places.
  10. I should have given you a "thank you" for the info. I decided to go with the 32-in-1 on that 1200XL. Now I am working on another and I want to do the internal basic and use an eprom with the XL/XE OS and Omniview XL
  11. I am working on the mod that installs an 800XL OS and internal BASIC, the instructions say to pull out all of the jumpers except 11, 12, and 13. Since my 1200XL doesn't have jumpers in those places, am I supposed to insert jumpers in those places.
  12. OK, today I tried out the UAV with the jumpers positioned correctly. On my first test the colors were off when I booted pole position. The sky was green, the road was light gray, and the grass was dark green. When I booted with BASIC the screen was light blue and the text was dark blue. I tried another UAV and everything worked exactly as it should. So now I know that I have a defective UAV.
  13. Yes I adjusted the jumpers BACKWARDS, I was holding the UAV 180° out of position. Too late at night to do anything else so I will report on the oitcome tomorrow.
  14. I just installed a UAV in a 1200XL and the color is really bad. There is way too much black. After installation I inserted a Pole Position to check our the color. The grass was almost black, all of the darker spots in the clouds were black. All of the other colors except for the blue sky were way too dark. I tried another UAV and got the same results. I tried to adjust the color with the monitor controls and that didn't help much. I am using a Dell monitor that has s-video and composite inputs. When I boot without a cart, the Atari Logo screen has all of the colors but they are darker than usual. I tried two different carts so I know it isn't the cart nor the UAV. Has anyone experienced a similar problem.
  15. I just realized that your location is given in your initial post.
  16. Pull a keycap and take a picture of the mechanical switch, I may be able to give you some tips on repair, depending on the type of switch.
  17. Where are you in NC? I am in NC also about 25 miles east of Raleigh. I have repaired dozens of 800XLs and I would be glad to see if I could figure out what exactly is wrong with the DOA. If you are going to get seriously into the Atari community you probably want to fix it yourself. The first step would be to solder sockets into the place where they are missing. Then you insert working chips into the missing spaces. If the computer is still dead, you start swapping chips from the dead one to the working one until you find the culprit. I could mail you the sockets if you want to become a regular Atari freak/nerd.
  18. I know it is possible to replace a ribbon cable but I don't know if replacements exist anywhere. You should just get a new keyboard from Best. There new improved mylar type keyboards are supposed to be very good and long lasting. Sell replacement keycaps on eBay. You can probably sell them for $5 each. You could also sell the key switches on eBay. It might take a while to recoup your cost but it is possible.
  19. That is a mechanical switch keyboard, there is no mylar. Each key has contacts inside the switch that are activated by depressing the plunger.
  20. Those opportunities are rare, I have only had one in the past two months and if you have a computer that you can't use you might not want to wait for an indeterminate amount of time while you hope to find that "GOOD DEAL".
  21. Best Electronics has keyboards, they have the mylar version and the mechanical version. Mechanical is more expensive. You need to call Best, they are very slow about responding to emails. I get the feeling they are way understaffed.
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