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Everything posted by scorpio_ny

  1. With issues likes these, sometimes the only way is via process of elimination. I have an idea. Maybe you can post a picture of the top and bottom of the motherboard. There are a lot of sharp eyed people here. Maybe they can take a look and see if there any physically amiss that can be causing the issue (i.e. bad caps solder joints).
  2. Hey good luck with that! I am working on a project that was posted here to replace the keyboard on my 130XE. In opening my 130XE, I discovered that almost all the ram chips were MT ram and they were not socketed (only one was not). Even though my 130XE was working fine, I decided to be proactive and replace all the ram anyway. I added sockets and new ram and all worked out. Maybe down the road I will add sockets for the rest of the chips. Funny enough, my motherboard had some of the chips already socketed.
  3. Here is the link I was referring to. I made a mistake... the HDMI went through the hole of the RF channel selector. So.. maybe use the channel select for HDMI (or some other breakout cable for video): Atari 600XL NTSC and Sophia 2 HDMI install And maybe use the RF modulator hole for a stereo jack? Then the monitor port can stay the same except for the other enhancements that was targeted towards that (chroma, VBXE).
  4. Here is another idea. Since there is no RF modulator, maybe the hole for it can be leveraged for another connector. One option would be to use it for a stereo jack plug. Another, is to use it for video out. Another idea is to use it video connection for enhanced video output from Sophia 2 using a 4 pin TRRS jack (got this idea from the C64’s version of video enhancement) or maybe use a mini hdmi. There was someone here on Atari Age that made a Sophia board that terminated to mini HDMI instead of DVI. The reason I mention this that there see they a lot of people who may use this motherboard in their Atari 800XL case but do not wish to radically modify their case to accommodate the enhancement.
  5. Would it make sense to have some headers on the board to accommodate a pokey max chip? That way one could use DuPont connectors instead of soldering to the motherboard for the additional connections
  6. Jacques, Thanks for the info! Keeping my fingers crossed! 🤞
  7. Thank is good to know, thank you! I am still waiting for my switches and a couple more components to arrive before I start to work on my keyboard. Those keys look a lot better than the ones I acquired for this project (they need to go through the retro rite process because they were so yellow). One question: Does the switch stem designed for the circle based keycaps work with this new variation without modification? It looks slightly different in the photos.
  8. Hi @bfollowell, You are correct. The trace for the 5 pin DIN connector still has the audio on the trace. When I did my UAV upgrade and installed the DIN connector, I did not have to run any lines to connect the audio. It was just there on the trace. I have attached a photo of my 600XL with UAV installed with the 5 DIN connector installed for video and audio out. I had removed the RF modulator.
  9. It is really a fun game. I forget which platform, but there is a version that was modified so you can play three players at one time. That would be a lot of fun!
  10. Just replying this ancient thread. Any chance we will ever see this project completed? The current demos are amazing! I am huge fan of International Karate.
  11. Oh nice! Looks like you are going to be busy with some nice projects.
  12. HI @SS, You had mentioned that you had a couple of extra 64 chips that you were going to use initially for this project. I had done the upgrade using the two chips and it only required installing three wires and lifting a pin or two ( sorry @flashjazzcat and @BillC ). It was a very easy upgrade. I had posted pictures and a link to the instructions that I followed on this thread: 600XL Composite and Audio upgrade Maybe @flashjazzcat and @BillC can weigh in following this memory upgrade path in relation to installing the U1MB upgrade with it if it would be easier?
  13. Wow! Amazing work @rensoup and team! A new instant classic for the Atari 8-bit!
  14. One can actually do the upgrade with the 4464 chips that is reversible. One of the wiring variations, you solder wires on to the chips only. No soldering on the motherboard.
  15. Hi @venom4728a! @wildstar_87 and I have been in communication and working out the details. Thank you!
  16. Thanks @hasanc! I happen to follow Jan Beta's channel as well!. I also repair the Commodore 8-bits. I am looking at the Fluke 17B or the Fluke 117. There is a big difference in price. The latter, though more expensive, I know I will have the Fluke warranty in case of any issues with the device.
  17. I second this! Thank you ScreamingAtTheRadio for this project. I just sourced the square version of the keyboard (no Atari’s were harmed! It seemed that it was a returned service part. Need to do some serious retrobriting on it though since it so yellowed!) Trying to find someone to make me a make a couple of sets of the switch stems and stab holders. I also build custom keyboards and I am some group buys at the the moment, so this project was really appealing to me.
  18. Wow! That looks great! This was one of the games I used to play back in the day and I had a lot of fun with. Thanks @TIX!
  19. Welcome and congrats @clh333! Here a thread that shows and talks about the "ingot" power supply that @kenames99 and @tep392 had mentioned: Ingot Power Supply --> Garbage Can? And there are no stupid questions! A lot of members here are very knowledgeable with the systems and as you already seen, glad to help out.
  20. @bfollowell, I have heard the same thing about the Fluke meters. I will check out the Extech as well to see if they suit my needs. Thanks! 👍
  21. Well, I four NTSC 800XL's, one NTSC 600XL and a NTSC 130XE. One of the 800XL's has been upgraded with an Ultimate 1MB and Sophia 2 chip. I just got my Pokeymax 3 which I have to schedule some time to install on that same machine. My 600 XL has been upgraded to 64K and has the UAV video upgrade plus the missing the 5 DIN socket. I also have a 1050 and XF551 in storage which I have to go get to see if they still work. The upgraded 800XL and the 130XE, along with the disk drives are my actual childhood computers. I had kept them and now I am enjoying using them again.
  22. Hey @Beeblebrox, Thanks for the great info! I am also in the process repairing 8bit systems too. I am looking to get a good multimeter. I only have a very cheap basic one. Which one do you use?
  23. If you want to salvage the pokey chip, you could use a second chip socket. Put the Pokey chip in the socket and then solder what is left of the leg to the leg of the corresponding leg of the socket. Then, you can just put this into another socket on the motherboard. This would make it easier to replace in case the pokey chip dies.
  24. Hi Manterola, I am not aware of a specific 3D piece for the 130XE, but looking at the 130 XE, as a possible suggestion, you may be able to run the flat cable through the back via the ECI expansion. That is of course if you do not have any devices that are currently using it or plan to use in the future. If you go that route, you will definitely need a longer cable and possibly make it since there is no room for the cable with the connector to fit though. It would then be a matter of making 3D printed breakout box that could slip over the ECI slot or just an external breakout box.
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