iFixit - Answers With Device "Sega Game Console"

Sega Dreamcast: Dreamcast powers on, freezes at the date and time scren

Thu, 12 Mar 2026 19:36:13 -0700

I only am able to catch the end of the Dreamcast logo startup and sound and then the date and time logo appears to be completely frozen, nothing blinking as I usually remember it.

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.

Dreamcast VMU: When back of VMU is squeezed or pressed slightly the VMU will reset

Sun, 12 Oct 2025 09:43:55 -0700

I have 2 VMUs that will reset (aka long beep and ask for date and time) when you even slightly squeeze it. By squeeze I mean just grabbing it to pick it up, holding it in player grip, or putting it away somewhere like a pocket. Additionally, it will sometimes reset just by lying it on its back on a table or desk. I'm not sure if there is a misalignment with the prongs or what. I have brand new batteries in all of them and backing is screwed snuggly and secured.

Sega Genesis mini: It won't turn on

Sat, 16 Aug 2025 10:39:07 -0700

Hi my sega genesis atgames console won't turn on if you have any tip please let me know

Sega Nomad: Sega Genesis Nomad Repair Issue

Mon, 11 Aug 2025 14:43:38 -0700

I'm repairing a Sega Genesis Nomad. I've replaced the capacitors, and installed an RGBDRV and an IPS LCD.

However, the screen remains a blue screen, and the sound is just noise-like.

I've re-soldered and checked various parts, and I think 5V is reaching each section. I've also cleaned the cartridge slot.

The 68k CPU isn't heating up, so I replaced the CPU and RAM, but it's still not heating up. Voltage is coming through.

I feel like the problem might be somewhere else... Since 5V is present, I don't think it's the common regulator failure...

Does anyone know where I should check next?

Thanks.

Sega Genesis II: all games apear in black and white despite using multiple av wires

Thu, 20 Mar 2025 07:00:53 -0700

so I bought a Sega Genesis II from ebay it's in mostly working condition but every game cartridge I've tried plays in black and white

Sega Genesis II: Video output not working

Sun, 16 Mar 2025 09:08:18 -0700

My Sega will boot up and provide sound but no picture. Anyone with a guide to fix?

Sega Game Gear: My game gear does not turn on.

Mon, 13 Jan 2025 08:27:40 -0700

With power cord or batteries when I switch on the screen briefly lights up and then shuts off about 2 seconds.

Sega Game Gear: Down on D-pad doesn't work anymore

Mon, 23 Sep 2024 22:24:38 -0700

The down direction on my Game Gear's D-pad doesn't respond anymore, when I took it apart and actuated the button with a paper clip I could hear the speaker crackling (none of the other directions do this), which has me thinking something's redirecting the button's signal to the audio output. Has something been damaged (like an IC), and is it something I could fix?

Sega CD: Sega cd model 1 glitched screen

Tue, 02 Jul 2024 00:00:48 -0700

Hello! I have a console that I got on ebay that I wanted to fix but I'm stumped on this because I keep getting this errored and glitched screen. Any advice?

⟐ Edited July 02, 2024 at 0:00 MST

Sega CD: Why is my cd drive not spinning up

Mon, 03 Jun 2024 08:21:34 -0700

My sega cd 1 isn't playing discs I've taken the case of and the tray will open take the disc in and clamp it but not spin, I've moved the laser assembly further up the rails then started it up the assembly moves back ylto it's start position but won't spin

Sega Genesis: Sega Mega Drive cartridge error

Sat, 13 Apr 2024 02:44:58 -0700

I don't think this is a real problem with my Sega Mega Drive, but when I insert my Sonic the Hedgehog cartridge it's just a black screen.

Sega Genesis Flashback: My controllers are not connecting to unit

Mon, 09 Oct 2023 20:18:07 -0700

My controllers are not connecting

⟐ Commented October 09, 2023 at 20:18 MST

Sega Saturn: CD door clip switch will not remain in contact

Sat, 16 Sep 2023 06:58:42 -0700

Hi, The CD drive door on my model 1 Saturn has a 'tower' type door switch. The plastic tray lid presses a micro-switch against a contact plate when the lid is in the closed position. This is no longer happening. I have tried taping the micro swith and contact plate together, this works for a little while until the microswitch eventually moves off the contact plate and the door reads as open again, particularly annoying when you are in the middle of a playing session. Any methods for the best way to repair this? Can the switch be bypassed altogether? thank

⟐ Commented September 16, 2023 at 6:58 MST

Sega Genesis: power switch replacement needed

Wed, 23 Aug 2023 19:51:56 -0700

my old switch is broken, way beyond refurbishing, it was rusted and just crumbled, i need a new power switch, that is it, anyone know any good places to get them? dont recommend a site unless you see it cause chances are i checked and they didnt have them already

Sega Genesis: Sega Genesis Model 1 VA7 No Picture and Singing the Song of Its People

Mon, 21 Aug 2023 07:37:31 -0700

So I have a Model 1 VA7 Genesis that does not display anything and plays a haunting melody of games long played, which are played no more. See video to be moved, emotionally, and digestively.

Oh, and sometimes it doesn't always give the black screen with the sound. Sometimes when I turn it off, I get no signal but the led does come on. In that instance, I have to turn it off and back on again, and then I get the black screen and screeching.

https://www.youtube.com/watch?v=qXAlmeUu...

What I've tried:

Checked IC11 near the video and power ports to see if VCC1 and VCC2 were getting 5v. They were.

Checked the voltage regulator to see if it was outputting 5V. It WAS NOT, so I changed it with a new 7805 and now it is outputting 5v. Still no change though. :(

Checked continuity between the cartridge slot pins and the pins where it's connected to the board. All pins appear to be connected. Reflowed pins just to be safe and rechecked. Same issue.

Reflowed all the pints on the video output and power connector, no change.

Pumped the video out signal from IC11 directly into video cable just to see if that would tell me anything. No change.

Checked a few caps near the video output, they all seem within spec more or less.

Tried multiple power supplies that I use with other model 1s with no issue. No change.

Next, I plan on checking the rest of the chips to ensure they're getting the power they need. I'll also be checking all the traces from to chips to where they go when I feel like I need something boring and tedious to do. But in the meantime...any thoughts?

⟐ Edited by author August 21, 2023 at 7:37 MST

Sega Game Gear: Is my game gear power adapter inner positive or inner negative?

Mon, 05 Jun 2023 09:44:38 -0700

Hi,

I have a a Game Gear VA1 (Europe version, 837-9130), the power board has number 171-6391B (also has 837-9131). I don't have the power supply, but before buying a replacement I wanted to make sure whether I need a 9V adapter with inner positive or inner negative.

I can't figure it out from the Power board, does anyone know why one I would need?

Thank you!

Simone

⟐ Edited by author June 05, 2023 at 9:44 MST

Sega Genesis II: Sega Genesis won’t show on tv.

Thu, 09 Mar 2023 12:21:15 -0700

I’ve used this Genesis on this same tv about 2 years ago using the rf unit with no issues. I wanted to see if my daughter would be interested so got it out again but the video was mostly static. I bought an rca cord for it and tried again today but just getting a black screen with a kind of humming noise. Took the unit apart to clean but didn’t see any signs of damage.

I tried to attach a video of each cord. The static one is using the rf cable and the black screen is rca. Any advice would be appreciated.

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?