What's currently the best RGB mod for the PC Engine?

Discussion in 'Modding and Hacking - Consoles and Electronics' started by FireAza, Apr 17, 2013.

  1. Bad_Ad84

    Bad_Ad84 The Tick

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    Sounds like a damaged amp.
     
  2. FireAza

    FireAza Shake! Shake!

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    Would that cause the "blue screen of death" problem I'm having at the moment? Previously, before I connected the ground and 5v wires correctly, the game would still load, I just had no picture.
     
  3. Bad_Ad84

    Bad_Ad84 The Tick

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    Shouldnt make any difference to the loading. Just the missing colour.
     
  4. FireAza

    FireAza Shake! Shake!

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    That's a bit of a worry. Any idea what would suddenly be the cause of this "blue screen of death"?

    *EDIT* Got a replacement amp on the way BTW.
     
    Last edited: Jun 3, 2013
  5. FireAza

    FireAza Shake! Shake!

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    Okay, I've received the replacement amp and swapped it over. Same problem as before, only now it's a purple screen of death. Any clues? Everything seems to be securely connected.
     
  6. Tatsujin

    Tatsujin Officer at Arms

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    poltergeistpce.jpg


    :applause:
     
  7. FireAza

    FireAza Shake! Shake!

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    I thought you guys over at the PC Engine forums would like that. Now if I could just get the console working...
     
  8. duo_r

    duo_r Active Member

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    Something must have shorted and I hope a chip didnt get fried
     
  9. FireAza

    FireAza Shake! Shake!

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    Any ideas what? I mean, the only parts you're soldering to the console itself are a few wires to solder points on the expansion slot, so there seems very few chances for something to short during the process.
     
  10. Ergot_Cholera

    Ergot_Cholera Flaccid Member

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    Why do you need an amp? I have done this same mod just using the signals straight from the Hu C6260 chip and it works perfectly.
     
  11. Bad_Ad84

    Bad_Ad84 The Tick

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    The signal levels are much lower than optimal. You also shouldnt directly connect the outputs of that chip to a TV, the amp acts as a buffer between the chip and the tv.

    "Works" and "Correct" are quite different.
     
  12. FireAza

    FireAza Shake! Shake!

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    I've removed the RGB mode from the console, but I'm still getting a purple screen of death. Any tips guys?
     
  13. Fandangos

    Fandangos <B>Site Supporter 2013</B>

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    Ordered those SOP8 adapters. They will be here next week and I'll jump into this mod myself.

    Hope I can help you sort where the problem is while I'm doing it too, Fireaza.
     
  14. FireAza

    FireAza Shake! Shake!

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    Are you using my idiot's diagram, or can you read the original? If it's the former, use that diagram of the amp back a few pages to be sure you're feeding power and ground to the right legs, in my case I had them around the wrong way.
     
  15. Fandangos

    Fandangos <B>Site Supporter 2013</B>

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    Yeah, I have a little bit of experience with the THS but I'll follow your diagram with minor modifications.
     
  16. FireAza

    FireAza Shake! Shake!

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    Well, I've re-done the mod today on a new PC Engine, and it works! I have no idea what went wrong with the original console, but installing the amp in a fresh console solved the issue.

    Re-doing the mod also gave me the chance to take what I had learned from the first time and try something new. For example, last time I had trouble getting the video connector to center in the hole in the case. To solve this, I cut away the two plastic nubs that were preventing the connector from being positioned where I wanted it. And finally, I didn't stick one of the legs of the connector into one of the RF connector's holes, since this put the connector off-center. Instead, I positioned the connector where I wanted it and traced it's outline with a scalpel. This let me know where I needed to solder it for it to be in the center of the case hole :D Now everything looks perfect!
     
  17. RetroSwim

    RetroSwim <B>Site Supporter 2013</B><BR><B>Site Supporter 20

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    That's great to hear!

    I did the mod on my PCE Duo a short time ago, the results are pretty spectacular. What a great little amp! :)
     
  18. FireAza

    FireAza Shake! Shake!

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    Nice! Did you use my idiot's diagram?
     
  19. RetroSwim

    RetroSwim <B>Site Supporter 2013</B><BR><B>Site Supporter 20

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    Nah, the schematic from the first reply (with the modified values listed underneath it) was easy enough to follow, and that's pretty much just a copy of what's on the amp chip's datasheet.

    Your posts did encourage me to check, re-check and double-check everything before I powered it up though, so thanks for that! :p
     
    Last edited: Sep 16, 2013
  20. FireAza

    FireAza Shake! Shake!

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    Ha, at last it was useful in some way :p
     

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