I'm modding my television to accept analog RGB signals and so far everything had been working out great except that I cannot read the datasheet for the main encoder:
http://www.alldatasheet.com/datasheet-p ... 1242N.html
All I need to know is where Sync is inputted...the RGB inputs work great but obviously they don't do a lot of good without a synced image. I appreciate any help very much!
-Segasonicfan
Japanese reader help needed for modding project
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segasonicfan
- Posts: 425
- Joined: Tue Jul 04, 2006 5:20 am
Japanese reader help needed for modding project
I design retro gaming add-ons and repair old consoles
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
I think Pin 14 is a safe bet. It says "hu-a-su-to..." which sounds like horizontal [sync] to me.
BTW, I just used http://www.harapan.co.jp/english/japan/hiragana.htm
Oh, and 15,16,17 are just "analog" R,G,B.
-ud
BTW, I just used http://www.harapan.co.jp/english/japan/hiragana.htm
Oh, and 15,16,17 are just "analog" R,G,B.
-ud
Righteous Super Hero / Righteous Love
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segasonicfan
- Posts: 425
- Joined: Tue Jul 04, 2006 5:20 am
I know hirigana and katakana (not word definitions though) so I was able to read pin 14 but it says "fast blanking" when spoken in regular english. "fu-a-su-to bu-ra-n-ki-n-gu" So I'm pretty sure it's not the C sync input :/ Thanks for trying with it though.
I been busting my brain all day testing and trying to find the darn sync. That's all I need for this to work. 36" CRT RGB goodness
If anyone is good with monitor chassis in general maybe they can explain this circuit a little better to me? From what I understand it is a chroma encoder with the sync and RGB CRT drivers built in as well as a couple audio inputs and it's obviously I2C controlled. I find it strange that a chip could do this much but maybe it's just that good. In any case sync input has to be there somewhere...
-Segasonicfan
I been busting my brain all day testing and trying to find the darn sync. That's all I need for this to work. 36" CRT RGB goodness
If anyone is good with monitor chassis in general maybe they can explain this circuit a little better to me? From what I understand it is a chroma encoder with the sync and RGB CRT drivers built in as well as a couple audio inputs and it's obviously I2C controlled. I find it strange that a chip could do this much but maybe it's just that good. In any case sync input has to be there somewhere...
-Segasonicfan
I design retro gaming add-ons and repair old consoles
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
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segasonicfan
- Posts: 425
- Joined: Tue Jul 04, 2006 5:20 am
Hey,
I had to get some help on the GameSX forums too. I found the service manual online for $15 so I bought that and it has everything in English ;P
You were right though, pin 37 worked for the sync input once I removed the PIP controller board (it actually inputs its own sync and RGB lines). I spent a huge amount of time tweaking the RGB and sync to the proper voltage levels that the circuit uses and I finally had some success today. Just finished playing some Last Blade and Metal Slug in glorious RGB Now this TV is going to get used ALL the time rather than just collecting dust!
-Segasonicfan
I had to get some help on the GameSX forums too. I found the service manual online for $15 so I bought that and it has everything in English ;P
You were right though, pin 37 worked for the sync input once I removed the PIP controller board (it actually inputs its own sync and RGB lines). I spent a huge amount of time tweaking the RGB and sync to the proper voltage levels that the circuit uses and I finally had some success today. Just finished playing some Last Blade and Metal Slug in glorious RGB Now this TV is going to get used ALL the time rather than just collecting dust!
-Segasonicfan
I design retro gaming add-ons and repair old consoles
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
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segasonicfan
- Posts: 425
- Joined: Tue Jul 04, 2006 5:20 am
It's a super hard mod but definitely worth it if you can pull it off I had to do a lot of trouble shooting and adjustments to the input signals because the circuit doesn't like a large p-p voltage. Here's a pic of the awesome quality:
http://i18.photobucket.com/albums/b134/ ... obirgb.jpg
Simply a dream to have a 36" RGB monitor!
-Segasonicfan
http://i18.photobucket.com/albums/b134/ ... obirgb.jpg
Simply a dream to have a 36" RGB monitor!
-Segasonicfan
I design retro gaming add-ons and repair old consoles
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro
My Website: Segasonicfan Designs http://www.segasonicfan.wixsite.com/retro