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 Post subject: Japanese reader help needed for modding project
PostPosted: Fri Jun 15, 2007 2:27 am 


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Joined: 04 Jul 2006
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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
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 Post subject:
PostPosted: Fri Jun 15, 2007 7:04 am 


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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 :D

Oh, and 15,16,17 are just "analog" R,G,B.

-ud
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 Post subject:
PostPosted: Fri Jun 15, 2007 7:38 am 


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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
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 Post subject:
PostPosted: Fri Jun 15, 2007 8:13 am 


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Joined: 28 Jan 2005
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Location: USH
try pin 37 or 39 (depending on which video source is selected when you're using RGB)


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 Post subject:
PostPosted: Thu Jun 21, 2007 7:24 am 


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hey did you figure it out? I'm dying to know the answer :)


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 Post subject:
PostPosted: Thu Jun 21, 2007 8:44 am 


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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 :D Now this TV is going to get used ALL the time rather than just collecting dust!

-Segasonicfan
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PostPosted: Thu Jun 21, 2007 4:18 pm 


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Smokin' hot, dude! Maybe my old Sony Trinitron should have a looksee :D
-ud
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 Post subject:
PostPosted: Sun Jun 24, 2007 7:01 am 


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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
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