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netspecter

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  1. Last update? I installed the GBS Control changes to a GBS-8200. The Atari 2600 and the SNES (both RGB modded) worked great. The modded Intellivision II not at all. I'm now certain the Nintendo SCART cable is not the issue. If anyone has had any success doing a RGB mod on an Intellivision II let me know. Otherwise I'm throwing in the towel. A positive note about the whole exercise... GBA Control is legit. If anyone is considering getting into RGB modding their consoles GBA Control is the real deal. Image quality is great and cost is very reasonable (see the attached Pitfall II screen shot from an Atari 2600). If you have the tools to make the mods you're looking at cost of under $30. It's a reasonable cost of entry...
  2. I'd love for someone else to try installing the RGB board in an Intellivision II. If you get the chance please do.
  3. My update... I bought a cheap Chinese SCART RGB to HDMI converter that is supposed to be more forgiving with the sync signal. Sadly still no signal. Next I removed the AY-3-8915 chip and added a socket. I did this so I could easily resolder the wires to the chip to ensure the solder joints were good and it allows me to easily swap the AY-3-8915 chip if necessary. I also attached pin headers to the Nintendo port and the RGB boards (I have two) so I could easily try switching the wiring to test if the wiring guide on RetroRGB was correct or swap a bad board. Still nothing. No signal on the Framemeister or the Chinese converter. Desperation, and I because already soldered the headers and added pin connectors to all the wires, I swapped to the second board and low and behold I got a synced picture... The only thing that showed was the text of the intro screen. The white lettering was blue and very dim. It was the only part of the screen that was visible. The normal green background was black. This was visible on both the Framemeister and the Chinese converter. So I don't think the sync signal is the issue (at least with the second board). Why one board "works" and the other doesn't is still a mystery. My last attempt is to order a GBS-8200 and the parts to enable the retro console friendly GBS Control firmware. This allows me to wire the RGBs lines directly and remove the Nintendo to SCART cable from the equation. Everything arrives tomorrow. I'll give it one more go. If this doesn't work (and there isn't another RGB mod available) I'm out. Expect some Intellivision IIs to hit eBay along with the voice module and a handful of games. The hours I spent trying to make this work borders on insane. For the record the Intellivision II I'm using works. The RF output works as expected if I disconnect the RGB board. Also this is the second Intellivision II attempted to modify.
  4. I checked the plug wiring dozens of times. I also compared the plug wiring with the Atari 2600 I modded. Everything looks correct. Anyway I ordered one of those Chinese scalers yesterday. My fear is the Intellivision RGB mod isn't going to be compatible with the Framemeister. If it works with the Chinese scaler I'll have my answer. I'll let you know after I test.
  5. I tried two different consoles (both Intellivision IIs). Same "no signal" issue. Since the mod pulls the signal directly off of a single chip I have to think the problem is related to the wiring of the multi port plug, some compatibility issue with SCART cable or the XRGB Mini. I noticed the RF output stops working once the mod is installed. Did you see the same behavior? Are you using a XRGB Mini as well?
  6. I recently picked up a failed project from a few years back. I'm trying to install a RGB mod (Fred Kono design) for the Intellivision II. I can't get it to work. I'm hoping someone can shed some light on what I'm doing wrong. I used the guide from RetroRGB (https://www.retrorgb.com/intellivision.html). I wired from the RGB board directly to the chip as follows: 1->8 2->7 3->6 4->5 5->4 6->11 7->1 For the output I'm wiring to a Nintendo multiconnect plug. I use this plug for all the RGB modded consoles I have (Atari 2600, SNES Mini, N64). I wired from the RGB board to the plug as follows: 1->1 (Red) 2->2 (Green) 3->4 (Blue) 4->3 (Sync) 5->10 (5v) 6->5 & 6 (Ground) From the Nintendo multiconnect plug I'm using a cheap Nintendo to SCART cable -> XRGB Mini SCART adapter (I rewired the default adapter to be SCART compatible) -> XRGB Mini. I do NOT have an attenuation resistor on the sync line in the cable since all the RGB boards in the various consoles I have output 75ohms. When I turn everything on the XRGB says "no input". I've tried two different RGB boards (same design) on two different working Intellivisions. No luck. I don't have access to TV with RGB input to see if it is XRGB Mini related, but I ordered a cheap SCART to HDMI adapter to test with. I read somewhere where they are less picky with sync timings... Anyway I've spent more time than I care to admit on this. I must be doing something stupid. Can anyone help? Thanks!
  7. My Atari 2600 Jr REV E displays the demo properly. What's strange is the label on the board seems to be in a different location. I also tested a REF F which also worked fine. I have three other juniors, don't ask, that I haven't taken apart yet so I'm not sure their revisions. One of them didn't display properly. Unplugging and replugging the cartridge changed the results though still not correct. It makes me think the connection quality could be the issue.
  8. Has anyone tried to patch the EXEC ROM in an Intellivision II to address the compatibility issues? I've searched but I couldn't find any attempts. I get most folks wouldn't bother desoldering a 40 pin chip to fix a few (average?) games, but I thought someone would have tried it.
  9. Any news when the 2600RGB will be available from the US distributor? I held off ordering directly from Tim because I figured as soon as I did it would be available locally. That was a few weeks ago... I think I chose poorly.
  10. Thanks for the pics. Great idea using pin headers. Did you relocate the "tall" components to the bottom of the PCB or mount them horizontally? I socketed the TIA on a JR board in preparation for the upgrade. I also have a 4 switch board ready to go. Still debating which to upgrade.
  11. Has anyone installed one yet? Curious to see how well it works going through a xrgb-mini. I've been checking the US order page daily hoping for the opportunity to order.
  12. I've been hoping for something like this. Looking forward to some screen shots and the install guide.
  13. The screen shots were amazing. I can't believe there wasn't more interest. I know it is a long shot, but if you ever release your VGA mod I would love to purchase one.
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