Keneg Posted September 12, 2020 Share Posted September 12, 2020 (edited) I bought this a couple of weeks ago and just got around to trying it out. I had been using my TI with a 10.1” security monitor because it had an AV input. That was good for testing, but kind of hard on my old eyes. Tonight I decided to try out the AV2VGA with an old VGA monitor. The first picture is from the security monitor, the others from the VGA monitor. Not a bad result for a device that cost less than fifteen dollars. The dark spot near the center is from the monitor. Edited September 12, 2020 by Keneg 2 Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted September 12, 2020 Share Posted September 12, 2020 Nice, but upside down photos drive me nuts, so I hope you do not mind... 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 12, 2020 Share Posted September 12, 2020 What brand is that AV2VGA; Is that an Onn from WalMart? Quote Link to comment Share on other sites More sharing options...
Keneg Posted September 12, 2020 Author Share Posted September 12, 2020 10 minutes ago, OLD CS1 said: What brand is that AV2VGA; Is that an Onn from WalMart? I got it from eBay. Whoever made it wasn’t proud enough to put their name on it. It looks like the same one that Walmart has. Quote Link to comment Share on other sites More sharing options...
+jedimatt42 Posted September 12, 2020 Share Posted September 12, 2020 I have with all the same markings, and it only gives me a black & white picture from the 4A composite output. I only tried it on one console... and then stuck it in a drawer. But, more importantly, I don't recall seeing a door like that in Tunnels of Doom. Quote Link to comment Share on other sites More sharing options...
Keneg Posted September 12, 2020 Author Share Posted September 12, 2020 8 minutes ago, jedimatt42 said: I have with all the same markings, and it only gives me a black & white picture from the 4A composite output. I only tried it on one console... and then stuck it in a drawer. But, more importantly, I don't recall seeing a door like that in Tunnels of Doom. Don’t know why it would’ve give color. Maybe yours is defective. I am playing the King scenario. 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 12, 2020 Share Posted September 12, 2020 9 minutes ago, Keneg said: Don’t know why it would’ve give color. Maybe yours is defective. I am playing the King scenario. It is a common problem with devices which do not sync properly to the composite output of our classic machines. Stipulating the chipset of @jedimatt42's unit is the same as yours, I would speculate the console output is slightly out-of-spec due to the 10MHz crystal. I posted the link elsewhere to a blog entry where the author describes how the 10MHz crystal was out of spec enough to cause the color burst to look fine in an oscilloscope but cause the converter to only sample luminance. 3 Quote Link to comment Share on other sites More sharing options...
RXB Posted September 12, 2020 Share Posted September 12, 2020 Nice I use a HDMI version Keneg. Works great on a old Flat Screen Monitor. Quote Link to comment Share on other sites More sharing options...
Keneg Posted September 12, 2020 Author Share Posted September 12, 2020 2 hours ago, RXB said: Nice I use a HDMI version Keneg. Works great on a old Flat Screen Monitor. None of my old 4:3 aspect monitors have anything other than VGA. Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 12, 2020 Share Posted September 12, 2020 10 minutes ago, Keneg said: None of my old 4:3 aspect monitors have anything other than VGA. All but a few of mine have DVI. However, not all HDMI converters output a signal which is handled by the DVI monitors. More pain. Quote Link to comment Share on other sites More sharing options...
Keneg Posted September 12, 2020 Author Share Posted September 12, 2020 13 hours ago, OLD CS1 said: It is a common problem with devices which do not sync properly to the composite output of our classic machines. Stipulating the chipset of @jedimatt42's unit is the same as yours, I would speculate the console output is slightly out-of-spec due to the 10MHz crystal. I posted the link elsewhere to a blog entry where the author describes how the 10MHz crystal was out of spec enough to cause the color burst to look fine in an oscilloscope but cause the converter to only sample luminance. So could this be fixed with a crystal change without affecting the rest of the computer? Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 12, 2020 Share Posted September 12, 2020 2 minutes ago, Keneg said: So could this be fixed with a crystal change without affecting the rest of the computer? Yup. Check this out. https://www.pagetable.com/?p=672 Quote Link to comment Share on other sites More sharing options...
Keneg Posted September 12, 2020 Author Share Posted September 12, 2020 Interesting article. If he had his scope on the same setting each time, it looks like the frequency was too high before he changed the crystal. It is about 3 divisions to start and about 3.3 after the crystal change. Quote Link to comment Share on other sites More sharing options...
GDMike Posted September 13, 2020 Share Posted September 13, 2020 On 9/11/2020 at 8:58 PM, Omega-TI said: Nice, but upside down photos drive me nuts, so I hope you do not mind... I thought it was just a different Russian ti knock off. Man... Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 13, 2020 Share Posted September 13, 2020 24 minutes ago, GDMike said: I thought it was just a different Russian ti knock off. Man... Nah, the original photo was of an Australian model. 1 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted September 14, 2020 Share Posted September 14, 2020 I have an interesting 4:3 monitor with hdmi and vga.. its a dell Quote Link to comment Share on other sites More sharing options...
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