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Comprehensive set of repair information for video game consoles developed by Sega, which began as a video game console development company. In January 2001, they began concentrating on software development.

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Graphic and Sound problems!

HeyHo,

I bought a used Sega Master system 1 Power Base, PAL with antenna cable and the game "Alex Kidd in Shinobi World".

Well, the system works fine but there is a deep buzzing noise at the background. The noise does also change pitch from normal to low, to high....

And the graphics are really messed up. There are huge black transparent scanlines from the bottom to the top of the screen. And at the point where the scanline is, the game changes to black and White... oÔ

I Tried:

  • Another Antenna cable (From NES/Famicom)
    • Nothing Happened. Same Errors.
  • I soldered in a A/V Connector.
    • Same Problems with graphics, but no sound (Allthough I did solder correctly.)
  • I Tried to hook the Game system on a CRT TV (Mine is Flat)
    • Still the same problem...
  • I cleaned up the whole System. Every contact of every connector was cleaned.
    • Of course the error still appears.
  • I Cleaned the Game Module.
    • Same Problem -.-
  • I Opened the system, but every cap, every contact and so on was fine.

I hope you can help me or make a suggestion.

Thanks folks,

Kentsfield

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Wow. That's a little out of my league. Try these places for some extra help. I'm sorry, wish I could help you further.

Genesis A/V Pinout

Genesis Mod Forums

Master System Scart pinout

Good luck!

==Update==

Maybe these will help too.

Block Image

Block Image

Block Image

Block Image

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Thanks, man!

You're Awesome!

With this schematic I can try to fix this problem.

Anybody else got suggestions?

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It is the capacitors. Common issue. I sell them on ebay. Look up sega master system capacitors

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