Gary from OPA Posted May 9 Share Posted May 9 1 minute ago, dabone said: All the usbc pd boards that I saw have a value you set or buy them at, but if that voltage doesn't exist on the usb c power supply you are using, they then pass the next lower voltage. Yeah that one thing I noticed with them. So what external 12volt power supply do you recommend? Is there a suitable one like on Amazon? Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463613 Share on other sites More sharing options...
dabone Posted May 9 Share Posted May 9 6 minutes ago, Gary from OPA said: Yeah that one thing I noticed with them. So what external 12volt power supply do you recommend? Is there a suitable one like on Amazon? My favorite is using a meanwell lrs-50 and 3d printing a case for it. Other than that, most should work, just check the reviews and buy a decent quality one. The ones I send out originally were from a mini pc router my company carried for years, and were also generic Chinese psus. 2 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463620 Share on other sites More sharing options...
+dhe Posted May 9 Share Posted May 9 1 hour ago, dabone said: I'm the one that did the power supplies. @dabone , Is it safe to test the voltage output not under load? Center post positive or negative? Thanks for this kewl new product. Most of my TI transformers buzz because of age, and I'm sure the original PSU could do with a recap. 2 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463640 Share on other sites More sharing options...
dabone Posted May 10 Share Posted May 10 1 hour ago, dhe said: @dabone , Is it safe to test the voltage output not under load? Center post positive or negative? Thanks for this kewl new product. Most of my TI transformers buzz because of age, and I'm sure the original PSU could do with a recap. That's the importance of a regulated power supply. The voltage will be the same with or without the load. Unregulated supplies have a wide range of voltages dependent on the load. Center positive, and it has a protection circuit incase it gets wired up backwards. 2 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463666 Share on other sites More sharing options...
+Schmitzi Posted May 10 Share Posted May 10 TI-99/4A RetroPower PSU from Poland https://www.ebay.com/itm/125665389949 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463732 Share on other sites More sharing options...
Gary from OPA Posted May 10 Share Posted May 10 13 minutes ago, Schmitzi said: TI-99/4A RetroPower PSU from Poland https://www.ebay.com/itm/125665389949 Yes that another option. The made a universal retro PSU as external brick which is the same for various older home computers and just supply a different connection cable from it to the computer. For this one you rewire the transformer plug to go directly to 4 pin molex inside your ti99 and remove the old power supply totally. If you want to keep your ti99 power switch and led you have to figure out your own solution for that part. Finally, once your ti99 is modified internally you got to be careful to not plug in an original ti transformer again or it will damage your console. 3 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5463736 Share on other sites More sharing options...
Gary from OPA Posted May 10 Share Posted May 10 So far with 15 minutes left, a cheap ti99 console. https://www.ebay.ca/itm/156192985890 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464007 Share on other sites More sharing options...
+OLD CS1 Posted May 10 Share Posted May 10 1 minute ago, Gary from OPA said: So far with 15 minutes left, a cheap ti99 console. https://www.ebay.ca/itm/156192985890 Cheap for pick-up, but Monopoly$51.36 shipping?! Crikey! 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464008 Share on other sites More sharing options...
Gary from OPA Posted May 10 Share Posted May 10 (edited) 12 minutes ago, OLD CS1 said: Cheap for pick-up, but Monopoly$51.36 shipping?! Crikey! Only 37 usd for shipping. But yeah not worth it for me with the 51 cad in shipping or I will try. It ended at 13.50 usd plus of course shipping Edited May 10 by Gary from OPA someone won it 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464010 Share on other sites More sharing options...
InfiniteTape Posted May 10 Share Posted May 10 21 hours ago, dabone said: As for the USB-C input, since this is a VERY stripped down psu, it requires the +12v to be +12v, or it could damage things. The +12 is routed straight to the TI motherboard, and the PSU generates the +5 and -5 rails. All the usbc pd boards that I saw have a value you set or buy them at, but if that voltage doesn't exist on the usb c power supply you are using, they then pass the next lower voltage. How extensive would the design change be to add protection against that scenario? Even if you're not interested, it might be fun for someone else. Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464106 Share on other sites More sharing options...
SteveB Posted May 10 Share Posted May 10 On 5/5/2024 at 12:20 AM, horizon2374 said: I saw the CD PES as well. They are unique indeed, and some of the very last PES systems manufactured (Feb/Mar 1984). Many years ago I acquired the full system on eBay, including the CD-branded monitor, which is actually a Zenith ZVM-131. I’m not certain a CD-branded RS-232 was manufactured, as this typically wouldn’t be used, but yes the flex cable, 32K, and disk controller cards were made. A great site to visit about the system: http://www.ti99.com/ti/index.php?article16/control-data-cdc-99-4a The TI console is a late release QI version, with a modified CD-branded ROM. Late release QI’s include the orange-line power switch, along with orange-line on top of the switch itself. Is there a ROM-Dump to get this nice boot-screen in an emulator? Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464134 Share on other sites More sharing options...
+Ksarul Posted May 10 Share Posted May 10 It just has a different GROM0, CD4457, based on the V2.2 code with a modified title screen. I thought this one was an option in MAME, so the GROM should already be out there. Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5464183 Share on other sites More sharing options...
+FarmerPotato Posted May 17 Share Posted May 17 Quirky chip photo - 74LS139A from a seller I buy 9902s from 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5468310 Share on other sites More sharing options...
nuxi Posted May 18 Share Posted May 18 P-code card sitting at $32 on shopgoodwill: https://shopgoodwill.com/Item/199007207 3 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5468555 Share on other sites More sharing options...
+arcadeshopper Posted May 18 Share Posted May 18 19 hours ago, nuxi said: P-code card sitting at $32 on shopgoodwill: https://shopgoodwill.com/Item/199007207 81 now.. and it;s confirmed to be not the known bad build date Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5469038 Share on other sites More sharing options...
+retroclouds Posted May 19 Share Posted May 19 7 hours ago, arcadeshopper said: 81 now.. and it;s confirmed to be not the known bad build date Can you elaborate on the known bad build date. First time I heard about that. What’s the impact? 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5469230 Share on other sites More sharing options...
+arcadeshopper Posted May 19 Share Posted May 19 10 hours ago, retroclouds said: Can you elaborate on the known bad build date. First time I heard about that. What’s the impact? 1 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5469441 Share on other sites More sharing options...
horizon2374 Posted May 20 Share Posted May 20 Insane!! 2 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5470084 Share on other sites More sharing options...
+arcadeshopper Posted May 30 Share Posted May 30 On 5/18/2024 at 10:21 PM, arcadeshopper said: 81 now.. and it;s confirmed to be not the known bad build date Who won? 1 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5477028 Share on other sites More sharing options...
RickyDean Posted June 1 Share Posted June 1 Here's an interesting TI monitor. https://www.ebay.com/itm/355648026019?itmmeta=01HZB0SF1G7WNQNHDZBHPVBH7E&hash=item52ce4635a3:g:9uUAAOSwPvRmIeVL&itmprp=enc%3AAQAJAAAAwHvsnSoqYt4lb%2Bc5%2Fa%2BODsf9jT0ZEUjHMTBTNoLBDuyKebeDb8a5B5xOESm2adi2qTm%2B3N1kkP3vDOufqatVXEP%2BzNHwqqh0YJeoK4s7nCgxO4NzpxNbAdoXYUI8wR4NhEeIX1s%2FO%2B%2B8W2L0%2BG%2B3bzSGjyoaqcMbeNUsPMiazNvgO%2FTf5Vc%2BI3WeiS57UhCrrpL3kTfFpIlnvC5JE66pnN40W9Q5jnl1CHsA7HP6uPm0rJ5pNeFKklTz3v9KGisYAg%3D%3D|tkp%3ABk9SR9Dx5eD6Yw 2 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5478431 Share on other sites More sharing options...
Gary from OPA Posted June 1 Share Posted June 1 13 minutes ago, RickyDean said: Here's an interesting TI monitor. https://www.ebay.com/itm/355648026019?itmmeta=01HZB0SF1G7WNQNHDZBHPVBH7E&hash=item52ce4635a3:g:9uUAAOSwPvRmIeVL&itmprp=enc%3AAQAJAAAAwHvsnSoqYt4lb%2Bc5%2Fa%2BODsf9jT0ZEUjHMTBTNoLBDuyKebeDb8a5B5xOESm2adi2qTm%2B3N1kkP3vDOufqatVXEP%2BzNHwqqh0YJeoK4s7nCgxO4NzpxNbAdoXYUI8wR4NhEeIX1s%2FO%2B%2B8W2L0%2BG%2B3bzSGjyoaqcMbeNUsPMiazNvgO%2FTf5Vc%2BI3WeiS57UhCrrpL3kTfFpIlnvC5JE66pnN40W9Q5jnl1CHsA7HP6uPm0rJ5pNeFKklTz3v9KGisYAg%3D%3D|tkp%3ABk9SR9Dx5eD6Yw Yes, interesting one, looks like a green or amber monitor maybe from the ti professional computer era. And it has some burn in as well. Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5478441 Share on other sites More sharing options...
+Schmitzi Posted June 3 Share Posted June 3 Anyone knows about the cables plug, how it looks ? 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5479124 Share on other sites More sharing options...
Gary from OPA Posted June 3 Share Posted June 3 2 hours ago, Schmitzi said: Anyone knows about the cables plug, how it looks ? Looks to be just a RCA plug with no sound 2 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5479161 Share on other sites More sharing options...
+OLD CS1 Posted June 10 Share Posted June 10 This looks familiar: https://ebay.com/itm/256538912228 1 1 Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5483175 Share on other sites More sharing options...
+Vorticon Posted June 10 Share Posted June 10 What's so special about it? Quote Link to comment https://forums.atariage.com/topic/215689-ti-related-ebay-heads-up-notice/page/283/#findComment-5483289 Share on other sites More sharing options...
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