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hueyjones70

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Everything posted by hueyjones70

  1. hueyjones70
    I chose this topic because it sounded similar to my situation. I don't know if I have RF or not I don't have a TV that I could connect to. I use a monitor. I will check the monitor DIN.
  2. hueyjones70
    I know that an 800XL has composite video, the issue is that the composite video is not working on the 800XL that I am currently repairing.
  3. hueyjones70
    Thanks for the info. I will look at the transistors, I have already tried replacing the 4050 (U20). I realize now that the previous reference to the video pin was for the composite pin for the monitor cable.
  4. hueyjones70
    I have an 800XL that has no composite video. No mods. Which POKEY pin is the composite video.
  5. hueyjones70
    I found the problem, one of the inductors on the right side of the MB was bad. I believe it was L23.
  6. hueyjones70
    I have an 800XL that doesn't respond to the joystick down in Port 1. Joystick works ok in port 2. Have resoldered the joystick input connections and no change. I have no idea where to start trouble shooting. Is there a particular chip/pin that carries that joystick signal?
  7. hueyjones70
    Why doesn't someone who has a cart clone it and get the cart back on the market? I would buy one for sure. I remember seeing a cart for sale on eBay and bidding a ridiculously high bid and that bid was about half the winning bid.
  8. hueyjones70
    I know there is a spot for L12 but the parts list for the NTSC does not specify what part goes there. On my PAL machine it appears to be a ferrite bead.
  9. hueyjones70
    I bought a converter that would work with PAL & NTSC machines and has HDMI output and CVSB & S-VIDEO inputs. The PAL 600XL gives a pretty good image. Is there a quick and easy video upgrade for pal machines.
  10. hueyjones70
    I don't know why this worked but there were 3 empty spots for resistors, capacitors, etc so I installed jumper headers in those spots and when I added the jumper to L12 I got composite video. There is no part listed for L12 in the manual and L12 is not mentioned in the instructions for the Super Video 2.1 upgrade.
  11. hueyjones70
    I have almost done a successful SV2.1 on a 600XL. I say almost because I have luma and chroma but no composite. My composite appears to be about the same as chroma only. It appears that there is a trace for composite to the monitor jack. I am wondering if this is not actually the case and If I need to run a wire from somewhere to the composite connector post on the monitor jack and eliminate the aforementioned trace.
  12. hueyjones70
    OK thanks, I was under the impression that the UAV created it's own signal independent of the video circuit of the computer.
  13. hueyjones70
    I have been working on a PAL 600XL. It came with the monitor jack and all of the extra video circuits were populated. I am only getting black & white output and I was informed on another thread that this is normal for PAL machines. Will a UAV output color even on a PAL machine. I remember working on an 800XL and getting color output but I don't remember if I did a UAV on the 800XL or not.
  14. hueyjones70
    Thanks for all the info. I installed sockets for the ICs I had removed and with a working SALLY the computer is partially working. I cannot get chroma. I ran the wires to the monitor jack according to the instructions for the SuperVideo 2.1 modification. I cut the trace that grounded chroma. The Luma is very sharp. Is there another point besides the junction of resistors 123 and 124 that would give me a good chroma hook-up. Is the problem possibly because of using a PAL computer on a CRT monitor.
  15. hueyjones70
    Where does the transistor amp get installed.
  16. hueyjones70
    I would like to know more about this.
  17. hueyjones70
    There are pictures of the PCB, I have already started taking out components so that I can add sockets as I trouble shoot the problem. the only socketed chip was that weird one that fits in a 14 pin socket but only has I pins. I had taken out the OS ROM and BASIC. I added a socket for the OS ROM. I will get some more work done tomorrow. Update: I may have found the problem, the 14806 is bad. I need to solder in sockets for the ICs I removed and retest. If the computer works I don't know if I will continue to add sockets or not.
  18. hueyjones70
    I just acquired a PAL 600XL and it has the video monitor jack and it appears to have most or all of the video components installed. Is this normal for a PAL or has someone modified this machine? The machine is currently not working and it is totally unsocketed so I will have to do some work to.
  19. hueyjones70
    130XE with UAV-D running Pole Position and BASIC.
  20. hueyjones70
    I have an Ambery with HDMI output that give a great picture on my element flat screen TV. I bought two other cheap converters and neither of them will produce a color picture. Is that a common problem with cheaper converters.
  21. hueyjones70
    Will this work on the atari computers.
  22. hueyjones70
    I did the Deoxit thing and the problem seems to have been eliminated, good call. Thanks.
  23. hueyjones70
    I have a 130XE that changes screen colors. This is not the color change that comes with a long period of screen idleness. The shades of color change just a little every few seconds. The opening blue screen may take on a slight purple hue and then turn to a dark blue. I haven't timed it out but it seems to be about the same time interval on each shade. I wonder if it could be the color resistor. I have searched the forums and haven't found anywhere that anyone else has written about a similar problem.
  24. hueyjones70
    I am glad I found this.
  25. hueyjones70
    This is good to know.
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