sermajic Posted June 22, 2011 Share Posted June 22, 2011 can anyone point me to a reliable source of where to get composite and audio from a dina 2in1? so fo i managed to get onlyblack and white and no audio help please ! Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 22, 2011 Author Share Posted June 22, 2011 done this: "Just thought I'd bump this as I just got a DINA 2-in-1 today. After being unimpressed with the terrible RF, I decided to take a whirl at modding the thing. What I did for composite video was I first wired up a 460 ohm resistor from pin 36 on the TMS9918 to the shield on the RF modulator, which acted as a ground source. Then I took another wire, soldered it across from pin 36, and then connected it to the RF jack (which had been cut off from the RF output). Works like a charm now, and the video quality isn't all that bad either!" can anyone point me to a reliable source of where to get composite and audio from a dina 2in1? so fo i managed to get onlyblack and white and no audio help please ! 2 Quote Link to comment Share on other sites More sharing options...
ozma wars Posted June 23, 2011 Share Posted June 23, 2011 where someone interested I have two for sale. Quote Link to comment Share on other sites More sharing options...
mimo Posted June 23, 2011 Share Posted June 23, 2011 where someone interested I have two for sale. price? shipping to UK? Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 23, 2011 Author Share Posted June 23, 2011 enough trying to sell things do you have any relevant info or not? can anyone point me to a reliable source of where to get composite and audio from a dina 2in1? so fo i managed to get onlyblack and white and no audio help please ! Quote Link to comment Share on other sites More sharing options...
+5-11under Posted June 23, 2011 Share Posted June 23, 2011 done this: "Just thought I'd bump this as I just got a DINA 2-in-1 today. After being unimpressed with the terrible RF, I decided to take a whirl at modding the thing. What I did for composite video was I first wired up a 460 ohm resistor from pin 36 on the TMS9918 to the shield on the RF modulator, which acted as a ground source. Then I took another wire, soldered it across from pin 36, and then connected it to the RF jack (which had been cut off from the RF output). Works like a charm now, and the video quality isn't all that bad either!" can anyone point me to a reliable source of where to get composite and audio from a dina 2in1? so fo i managed to get onlyblack and white and no audio help please ! So, is it all working properly now, or is there still an issue with video or sound? I did a quick mod on mine, very similar I think, although I disconnected the video output from the original circuitry (and added a resistor to ground). Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 23, 2011 Author Share Posted June 23, 2011 still don`t know where to get audio and chroma, can you please email me data and or pictures? Email me So, is it all working properly now, or is there still an issue with video or sound? I did a quick mod on mine, very similar I think, although I disconnected the video output from the original circuitry (and added a resistor to ground). Quote Link to comment Share on other sites More sharing options...
+5-11under Posted June 23, 2011 Share Posted June 23, 2011 Sound you should be able to get directly from pin 7 of the SN76489AN. Video should be nearly as simple. It seems strange that you're not getting any color. I'd try isolating the output from pin 36 (keep the resistor to ground) from the rest of the circuitry that is leading to the RF modulator. I don't remember what component(s) need to be at least partially removed, but you should be able to see where the traces from pin 36 are leading, and remove one leg of the directly attached components. still don`t know where to get audio and chroma, can you please email me data and or pictures? Email me So, is it all working properly now, or is there still an issue with video or sound? I did a quick mod on mine, very similar I think, although I disconnected the video output from the original circuitry (and added a resistor to ground). Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 24, 2011 Author Share Posted June 24, 2011 thanks , looking great now, waaaay better than colecovision itself! but even with a heatsink it still overheats, should i put the video chip from a spare colecovision on it? would it still overheat? Quote Link to comment Share on other sites More sharing options...
+5-11under Posted June 25, 2011 Share Posted June 25, 2011 If you're worried about heat, then I'd add a heatsink, with some proper adhesive, ideally. The ColecoVision uses a TMS9928 (not TMS9918), so it wouldn't be a direct replacement. They're pretty much the same, except the '18 outputs composite natively, while the '28 outputs something similar to YPbPr/component -> you'd need something like my component mod to help you out there. I'm guessing the heat/power is about the same between the 2 chips. Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 25, 2011 Author Share Posted June 25, 2011 If you're worried about heat, then I'd add a heatsink, with some proper adhesive, ideally. The ColecoVision uses a TMS9928 (not TMS9918), so it wouldn't be a direct replacement. They're pretty much the same, except the '18 outputs composite natively, while the '28 outputs something similar to YPbPr/component -> you'd need something like my component mod to help you out there. I'm guessing the heat/power is about the same between the 2 chips. thanks for your data put a heatsink, but even with that i still see some graphic/colour glitches when overheating, though its way better now i wonder if all dina 2 in 1 are the same, bought mine new Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 25, 2011 Author Share Posted June 25, 2011 If you're worried about heat, then I'd add a heatsink, with some proper adhesive, ideally. The ColecoVision uses a TMS9928 (not TMS9918), so it wouldn't be a direct replacement. They're pretty much the same, except the '18 outputs composite natively, while the '28 outputs something similar to YPbPr/component -> you'd need something like my component mod to help you out there. I'm guessing the heat/power is about the same between the 2 chips. what about pal cbs colecovisions? i have a lots of those Quote Link to comment Share on other sites More sharing options...
+5-11under Posted June 25, 2011 Share Posted June 25, 2011 If you're worried about heat, then I'd add a heatsink, with some proper adhesive, ideally. The ColecoVision uses a TMS9928 (not TMS9918), so it wouldn't be a direct replacement. They're pretty much the same, except the '18 outputs composite natively, while the '28 outputs something similar to YPbPr/component -> you'd need something like my component mod to help you out there. I'm guessing the heat/power is about the same between the 2 chips. what about pal cbs colecovisions? i have a lots of those TMS9929. Similar to the TMS9928, except PAL instead of NTSC. Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 25, 2011 Author Share Posted June 25, 2011 thanks you for taking the time to respond! maybe i should buy more dinas and try? or will they all overheat? i loved the small system, good controllers and nice video, once modded If you're worried about heat, then I'd add a heatsink, with some proper adhesive, ideally. The ColecoVision uses a TMS9928 (not TMS9918), so it wouldn't be a direct replacement. They're pretty much the same, except the '18 outputs composite natively, while the '28 outputs something similar to YPbPr/component -> you'd need something like my component mod to help you out there. I'm guessing the heat/power is about the same between the 2 chips. what about pal cbs colecovisions? i have a lots of those TMS9929. Similar to the TMS9928, except PAL instead of NTSC. Quote Link to comment Share on other sites More sharing options...
+5-11under Posted June 25, 2011 Share Posted June 25, 2011 Some could be worse than others, I suppose. Quote Link to comment Share on other sites More sharing options...
sermajic Posted June 25, 2011 Author Share Posted June 25, 2011 Found tms 9918 on ebay, will try replacing it Quote Link to comment Share on other sites More sharing options...
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