Hello everyone, I’m a Chinese player. I met Saturn by accident. When I was young I played pirated MD games. I saw Saturn for sale before, but I thought it was overpriced and I didn’t buy it. I thought maybe I get a SS. Its game library can complement my PS2 and PS3, and it has many fun games.
I talk about my console purchase and current condition. I don’t know repair or mod techniques. I bought this Japanese Saturn one month ago. It has a power supply modification, no transformer needed in China. The second controller port is damaged, fixed with UA glue and still stable. The optical drive works, and it has a modchip. I paid $29 for bare console.
Now the problem: I used GBSC and RGBS cable to play. It worked well last week. Yesterday there is sound but no picture. Power light on, flash cart light on, optical drive works normally.
At first I thought the power board broke. I asked a local repair shop owner online. He said this model’s power board is durable. Probably mainboard problem. Even if soldered well, other parts may fail again. Need testing. After he knew my goal: I want to fix the machine and share this story. He said it is too troublesome. He has many spare parts, but it is not necessary. Buy a better machine for flash cart use. I asked if he has spare console. He has one decent Saturn. I do not need modchip. My PS2 is only used to test game discs from different regions. I want to buy some games I like or games with interesting design for memory and collection.
I will post photos of my mainboard. Hope you can share your opinion for discussion.
My questions:
1. My priority: sentimental value > gameplay > collectibility. Which choice should I take? 2. What maintenance do I need for this retro console? 3. If my old machine is not worth repairing, how to pass it on with memorial meaning? I hope someone who really needs it takes it, not become trash e-waste.
Also I have another idea: find a donor console with same mainboard model, but broken shell and bad optical drive. Try to build one working Saturn by mixing good parts by myself. What do you think?
Before you do anything destructive or spend more money, have you already checked the battery?
https://www.ifixit.com/Guide/Sega+Saturn+Battery+Replacement/127970
You might get lucky and find out it’s that simple.
I also recommend checking the rest of the troubleshooting guides on IFixIt:
https://www.ifixit.com/Wiki/Sega_Saturn_Troubleshooting
It’s very cool that you’re trying to keep this old console alive and not let it become waste!
Does it really brick on a dead battery? That’s wild, I didn’t even know that.
I don’t actually know, I never had a Saturn myself. The early generation consoles didn’t need batteries because they were basically just static systems flashed to ROM chips (nothing dynamic to worry about, it executes the exact same process every time it powers on), but the cartridges had batteries to keep saved game files alive. If you have old cartridges that you’re trying to keep alive, check/replace their batteries:
https://www.ifixit.com/Guide/Super+Nintendo+Game+Cartridge+Battery+Replacement/162002
Note that if the game doesn’t keep save files but instead uses level codes or something like that, it probably doesn’t have a battery in it (no need for dynamic memory).
The more a device is like a computer, the more likely it is to need essentially a CMOS battery, especially if it has an onboard clock that keeps date/time information when the device is powered off (something has to keep the clock ticking while there’s no power). In PCs, if the CMOS battery is dead you will get POST when you turn it on, but no video output, just a black screen. The computer will typically appear to be working otherwise (fans, LEDs, etc). People will replaced monitors, graphics cards, even entire computers to fix a problem caused by a $2 coin cell, because they don’t know and nobody ever teaches this. I try to spread the knowledge whenever it seems relevant. You might be able to resurrect old devices with a simple battery swap.
No. You just lose all of your saves that you haven’t moved to cartridge memory.
I’ve added detailed photos. An electronics repair guy suggested I check the motherboard temperature, which reads normal right now. I found the metal plate next to the white foam padding on the power supply board runs very hot. Also, one signal capacitor responsible for audio/video processing is bulging. I plan to replace the power supply board first, then continue troubleshooting after that. Is this a reasonable approach?
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I plan to send my VA-model Sega Saturn to a retro hardware repair creator for testing. The console works over AV output, but RGBS gives a bright black screen when connected to my GBS-C. It also has bulging capacitors on the board.
My main goal is not to repair it. I want to use this unit as a physical sample for educational content and community troubleshooting guide. I accept that the console may not be returned after testing if needed for the teardown and measurements.
What points should we prioritize testing and documenting? Are there any hidden risks I haven’t thought about?
You can get “junk” marked consoles for really cheap, especially if you buy from online Japanese auctions. However if it’s a mainboard problem, that becomes more of a gamble. Has it been recapped? If I recall correctly, sound but no video can be bad caps.
Update on symptoms: now there is no video AND no audio. The power light turns on, the disc motor spins, and there is a brief buzzing/zzz sound on boot.
Extra background: This is a second-hand unit. The previous owner said they bought it from someone else. It has a built-in power supply mod, converted from original 100V to 220V.
Do you have other video cables to test with, to make sure it’s not your cable that’s gone bad?
My GBSC works fine, and I already replaced the cable. I went through basic settings with the GBSC seller, so the RGBS cable is not the culprit. I haven’t tried an AV cable yet. I’ll post capacitor photos later; it’s nighttime here in China and I don’t want to disturb my family.
A recap may be a factor but tbh unless you see an issue (bulging cap) it’s probably not a major factor. Recapping is overly suggested and can create new problems, especially if you’re not great at soldering
Check the av connector first imo (CN5). Broken or loose pins could create intermittent issues like you describe
IC14 and IC15 are the video and audio encoder ICs, I would check there next (cold/broken joints, tracing around for shorts, etc)
Less likely but check the oscillator, if it loses clock it can drop video. Is the bios modded? That could also cause clock issues, or if the bios is failing. Less likely, and also could be cpu failure which is even less likely but possible
It’s probably fixable but a matter of your skills, time and money you’re willing to put in. Finding a board that works with a dead optical drive and swapping is much easier and likely cheaper if you can easily get Japan prices for used Saturns (in the USA they can be a bit pricey)
I have three friends who will help me for free with troubleshooting advice, though none of them specialize in retro game console repair. They are skilled in their respective fields: automotive repair, electrical engineering & automation, and electronic information science. I want to learn what I can from them, as I am not a professional. I’m also aware there may be some misjudgments they could make due to different field backgrounds. Thanks again for sharing your ideas.
Hi, I’ve added photos of the model label. I can also post close-ups of the capacitors if needed. I don’t have capacitors on hand. Can I take it to a regular electronics shop for replacement? They don’t specialize in retro game consoles. Update on symptoms: now there is no video AND no audio. The power light turns on, the disc motor spins, and there is a brief buzzing/zzz sound on boot. Thanks for your reply.
I buy almost all my recap kits for all consoles from console5.com though I cannot speak if they ship to China.
Depending on the model of your Saturn, I believe some caps may be surface-mount style (versus through-hole) which increases the difficulty level of recapping a bit. If you discover your revision only uses through-hole, any electronics repair shop that offers soldering repair should be able to fix it, especially if you supply them all the caps. You can also ask them ahead of time if they are able to do surface-mount replacement.
Legacy hardware, best to rebuild it if possible, then there’s more donor parts for other people to replace if repairs arent possible in future. There’s a limited number of parts so use them sparingly for best long term results.
