iFixit - Answers With Device "Sega Master System"

Sega Master System: Powers on but won’t read games.

Tue, 24 Feb 2026 21:55:05 -0700

System powers on but won’t read games from cartridge.

Sega Master System: Why is my output an incorrect display color?

Sat, 10 Jan 2026 08:02:44 -0700

Why would my console display a green output color where there should be white? The result is the same weather using the RF port or the composite ports and I noted the saturation will change from time to time but never to the point that it is the proper white output.

Sega Master System: Fixing a Sega Master System game

Tue, 07 Feb 2023 17:30:20 -0700

Hello,

I been trying to get a Sega Master System game to work called R-type. Unfortunately I haven't had any success and believe that its the chips itself having problems. I then discovered a video on youtube based on fixing Sega Genesis games that testing pins of the chip using the diode mode on a multimeter, from ground to the pin, and if I had one pin from the chip that doesn't allow any current, to solder a 1k resistor to complete the circuit from the pin and ground. I tested that on a genesis game that had the same problem, and it works!

Video here: https://www.youtube.com/watch?v=eCT4ZKV2...

My question is, is that possible to do the same technique with a Sega master system game? If so, what resistor should I use?

Sega Master System: Power Converter and Supply

Wed, 18 Nov 2020 09:56:16 -0700

I tried to fix my Sega Master System myself but failed. I took out the Power Converter and the hole you plug the power supply into. I really wan’t to get it fixed but I can’t find the parts anywhere because I don’t know the names really. Do you know what I need?