If you position the power switch into its fully up (off) position, before pulling the cosmetic button up from the switch shaft, you would not break the latching post inside of the power switch. Just a tip for the future!

Bit of advice when working live, try to use something like a tupperware box to put over the various components to limit your chances of touching anything you don't want to probe. It's not perfect or fool proof, but it does help keep your hand raised when you're focusing on something else. Many small changes help reduce the risk that can never be fully eliminated.... It also means if something goes pop, it limits what may hit you. I always advise beginners to not touch mains voltage; and if they feel like they have to, to ensure they have either RCBO or RCD protection on the household electrical circuit, or use a plug-in RCD protector.

Fixing Sega Saturns is the lord's work. Great video.

I am happy that my advices helping you 😉It was an interesting problem, tipically on SMPS the ESR of electrolytic caps always go high (bad), in particulary in the small ones that prevent the oscillation of the swiching circuit (therefore that silence the whole PSU), you make sure you've always check them. The part you took off first, was the Switching controller + PWM + switching transistor in one case, those TOPxxx and TNYxxxx chips are poor made and many devices use them - TVs, Monitors, Video playing devices, washing machines etc. - they die very often and even explode to pieces once overheated.

@martijnappeldoorn8686

Жыл бұрын

I was going to say exactly the same about these TOP, TNY and LNK ic’s but you beat me to it. They tend to explode or simply don’t oscillate like the one in this video. Don’t how many lnk304’s i’ve replaced in washing machines and dryers, tny180 in harman/kardon blu-ray receiver also fails alot.

Ahhh man... I love the SEGA Saturn - my friend got a Mk 1 when they came out.. we played SEGA Rally and Virtua Fighter to DEATH.. I saved up and ended up getting a Mk 2. They were such incredible machines for the time - great home conversions of the SEGA Arcade Machines of the era!

@Mymatevince

Жыл бұрын

👍👍👍

Great video and fix as always Vince! Have you ever considered doing a video on trying to fix something with a broken/severely corroded board by getting a new one made through PCB Way? I know it would just be a lot of transferring components from one board to another, but maybe a good tea break fix to just show a sped up/condensed video. Just a thought. Keep up the great work and love the channel!

Great job Vince. Nice showing the opto coupler working. The double diode packages are common on switch mode power supplies. They are used to rectify the output voltage back to DC. Agree those switch mode IC's seem to be a common point of failure. Keep up the great work 👍

@Mymatevince

Жыл бұрын

Nice one Mick👍👍

@calebgrant179

Жыл бұрын

😢s

@calebgrant179

Жыл бұрын

​@@Mymatevince yy96hgj897

I really enjoy the console repair content. Excellent work Vince.

Brilliant fix Vince I always test them dual diode packages and mosfets with my fluke in diode mode, seems to be consistent for me, maybe those testers aren’t quite pushing the testing hard enough, I would say yours was breaking down under load? Keep up the excellent work, glad your finger is getting better 😊

Nice fix Vince! Thanks for the video!

It's nice to find a reoccurring fault with a specific device. If I ever find a faulty Sega Saturn in the wild, I may pick it up and see if I can fix it!

> breaks device during repair One of us! One of us!!!!

had this so much with saturns as i buy them a lot when they are cheap non working i have built a nice setup of old school consoles doing it as so far got 2 n 64's 2 mk1 saturns a mk2 , mega drive 1 and mega drive 2 , a boxed nes and got a master system 1 i need to sort out that has no power great video and keep them coming

The joys of the sega saturn my dad got one in the box second hand not long after the console was released from a thrift shop came with three games sonic 3d a golf game and torico the memory of that game got to the end level the city of moons never figured out how to finish the game all in all the game is cryptic and unusual such an underrated console many years later got a saturn for myself and the torico game one day I’ll finally get around to finishing the game I’m just happy i have them in my collection

Just had a look at the Datasheet for the TOP202 and its quite a clever device but relatively easy to understand for anyone who would like to move forward and learn to use an Oscilloscope this would be a good place to start, having only three pins the correct waveforms will be clear and very easy to see if its running or not without the need for a tester ( a scope is a high level tester I guess !) It uses PWM to set and maintain an output so the pulses will be easy to spot and as you have a battery powered scope relatively safe. However I bear no responsibility if you blow your house up ! and of course you should proceed at your own pace and what your comfortable with but its a logical step or maybe stick to battery operated stuff for your first 'scopeing'...anyhow just sayin and Great Video !....cheers.

Great job as always Vince, I'm guessing the IC fault must be before the diodes on the output. That's why it didn't test as faulty. Cool little IC, never seen them before.

I think mine works. There are no screws and I have some test games. I bought it 14 years ago off of someone that modded it and kept the chip. He dropped it off at my house so I trust him. lol It's been in a box with other old consoles for years. Thanks for providing a bit of fun to my week! I am gonna check mine out!

that was a good little fix vince arcade game looks brilliant

@Mymatevince

Жыл бұрын

Thanks DG👍

I always enjoy a MMV console fix!

Love these Retro vids :D Just the best :)

After the Genesis/Megadrive, there was the 32x and Sega/Mega CD add-on things before the Saturn. Never had them, as I jumped straight to the PlayStation. I've got a few things to send over to your PO Box soon! 🙂

@RWL2012

Жыл бұрын

true, but there were only about 2 million Sega/Mega CDs and 800,000 32Xs made, compared to 31 million Mega Drive / Genesis consoles and 9 million Saturns so I guess he was talking about major platform generations but yes you're right

loved the Saturn console, didn't do well in comparison but still great for its time.

Glad to see a result in the end, this is another Saturn PSU saved :) If you ever need bits like a power button, do drop me a message, I very likely have a spare or two laying around :p

@sirrell20004

Жыл бұрын

Sorry to jump in but do you have a mk1 reset button?

@Mymatevince

Жыл бұрын

Thank you Mike👍👍

@calebgrant179

Жыл бұрын

​@@Mymatevince xcvvxxxdddvvbbcvcxdcbccv

Perfect time for a repair video

Another great video. Maybe, since now you got 2 of them, you could try to mod one to not use the original power supply but rather be powered of of usb-c directly?

nice video again Vince your content is not only useful but I always find them comforting and enjoyable to watch

Nice one Vince, finger looks good now. 😊

The plastics on that power switch were brittle and yellowed with age. Not your fault, Vince.

my mk1 saturn is still going strong never been fixed or repaired its an original 1995 model and its never missed a beat and ii spent so long playing sega rally time trials and variou other classics one thing about sega consoles is they are durable for the most part and are far more repairable than most others from the time.

Very awesome! Another console saved.

Hi Vince! Love the videos! I think the tester you're using is ill-equipped to test transistors like these voltage regulators, as it's not really useful to know that they're comprised of 2 diodes unless you need to pass an entry level EE course. Testing the voltage input and output while in circuit with power applied will give you more actionable information.

Nice video, Vince :) That "double diode" stuff from the primary side should be a mosfet, not a diode pack.

Nice job! And I learned more about how optocouplers work 👍

@Mymatevince

Жыл бұрын

Thanks Garth 👌

@ClosestNearUtopia

Жыл бұрын

How to test in circuit. Measure input secondary side, measure output secondary side, compare readings and decide if the resistance went low, which basically means a low voltage drop.

WooHoo a new MMV video!

May be worth investing in a cheap 3d printer if you ever want to quickly make new switches/gears which can be expensive or hard to find online! Great fix Vince!

Nice job brother ❤

Not sure if you have one already, maybe you do but would love a breakdown of the equipment you most commonly use to fault find. Might make an interesting video.

Nice fix, another Sega saved from ending up in the landfill :)

Great job Vince =D Unlucky with the power switch =/

@Mymatevince

Жыл бұрын

Thanks Chris 👍👍👍

I noticed something possibly missing on the nonworking power board before the octocoupler was removed. There is two holes, writing R-301 and the electrical wiring diagram 'resistor' symbol on the board. Based on that view, before going further in video, I think that resistor missing might be the problem. After seeing the MK 2 working board, that good has the same empty spot with same writing and diagram symbol, so my first thought was wrong.

Those little switching chips fail often! had a lot of monitors where the switched failed (am 15 and do street repairs for people in my street and village) and it had no output just like the PSU of the Sega. No idea why they fail maybe because they get too hot?! Idk

Hi love your video's, I have a fault on model 2 when I plug the S video I only get black and white image and the cable was tested so it works. I also tested with a RF cable but the problem is still there.

With a Fault like this and the age of the device, the small Bootstrap Capacitor right next to the primary Switcher is a good candidate of being faulty.

I'm doing a DC PSU to Naomi right now ... and had the same issue with the PSU not sending voltage through ... but only on the 3.3 and 5v outputs ... the 12v read fine. I wondered there if it wasn't pushing it through because the switch wasn't pressed. I've not got far enough through yet to hooking up a switch to it, yet ... but I'm hoping that's the issue. Looking forward to getting stuck in, though.

fab video vince you should try get a commodore 64 or amiga :D

Hi Vince don’t know if you know the Tv series called wheeler dealers which is on discovery but they buy cheap cars and repair/renovate them and sell them on for a small profit, this weeks episode they buy a 1980 Rolls Royce Silver Spirit and fix it up it might be worth a watch !

@Mymatevince

Жыл бұрын

I really enjoyed it Jon, I've recorded it as well 👍👍👍👍

Yes another trying to fix video

Ooh trying to fix time ❤

In all my time dealing with power supplies of all types I've never known them to get damaged due to having no load. Some won't output the full voltage, computer psu were good for that.

@dungeonseeker3087

Жыл бұрын

Yeah, its only really an issue on linear supplies, switching mode PSUs are fine. There are plenty of old PC PSUs that don't work without a load, mostly from the XT/AT era and when working on those old systems you should always have a HDD connected to the PSU.

The Sega Saturn was the best quality made system by Sega besides the Master System

You've gone from being the Nintendo Switch killer to the Sega Switch killer. Saying that, I can't gloat because I managed to break a switch on a Pure pocket DAB radio after fixing it.

@Mymatevince

Жыл бұрын

😂😂😂😂🤣

It seems a big failure spot but you have spend it some more life. Very nice.

Don't feel bad! I literally did the same fuckin thing trying to remove that button on my v1 a few months ago. You can get replacements from China that are the same just missing the screw hole mounts. I had to make a make- shift mount but I got my button working again. You just need a 5 amp 240vac switch. I bought one of the Alps ones. Just lmk if you need a link Edit: I wrote this at the beginning of the video. Glad to see the v2 switch worked just fine on the v1!

23:54 did you bridge the power switch header on the known working one? :)

@Mymatevince

Жыл бұрын

Hahahah, oh no I didn't. Schoolboy error on that one!!!! Well spotted! Must have been that chip though as it was the only component that was changed over once the others had been resoldered back onto the board 👍👍

That poor finger Vince lol... Ever since I've known you, you've always been hurting those digits lol. Be careful bud ahahah

i bought a saturn last week, plugged it in went bang. same component that you changed so ordered a new one. soldered it in but still not working. do you think its worth getting another, maybe faulty???

I had the Saturn. Liked playing Virtua Fighter 2 and Panzer Dragoon 2 Zwie

Vince where did you get your blue jumper from, I’ve gotta get one.

Amazing video.

@Mymatevince

Жыл бұрын

Thanks CLC

@CLC-1000

Жыл бұрын

@@Mymatevince You're welcome. Hope you are having a great weekend so far.

man i feel old now i owned one of them. keep an eye on the game "panzer dragoon saga" if you find a good condition copy its worth a fortune.

Ah classic Vince breaking something on a console 🎉

The slide metal part of the power switch looks ad if it goes over to top out side part of the switch

I upgraded to a ReSaturn due to the power board being cracked in delivery. Worth it though

Would you be interest in a imac that's not working correctly?

I ended up getting ReSaturn or modern power board because it wasn't something I felt comfortable with.

Nice find ..especially getting false readings The bad one was reading a little higher .. For test meter Peak atlas DCA55 Component analyzer ... They build good Test meters Little pricey I bought years ago they have a new version out Check them out vince.... Money well spent Their capacitor tester is nice too

@Mymatevince

Жыл бұрын

I'll Google it. Nice one 👍

@QsTechService1

Жыл бұрын

@My Mate VINCE You can't go wrong I always use the capacitor tester Mainly I purchased mine about 10 years ago still working Strong It's a small business company I believe Good to support small businesses

Vince, mate, what are you doing with all this stuff after fixing? I reckon you are keeping some of the things you repair, but what about the rest? Keep going with the videos and give us more Rolls footage :D

you can use a Dreamcast power switch to replace it, just desolder the whole switch from a Dreamcast switch and solder it back onto the Saturn switch cable as the Dreamcast power switch cable is too short

This maybe a stupid question but why do you test in DC setting from an AC power supply

I have a Green dim flashing light with no start up, what could this mean?

Not a simple double diode indeed. The TOP202YAI is a PWM Controller and 700 V MOSFET in a 3pin package.

I think that switch was broken already, there seems to be some leftover glue residue there from a previous fix.

I'm not sure if my original comment posted, Vince. Get hold of a Peak DCA55, it would've more than likely picked up the fault.

Please please Vince get an isolation transformer! One day despite your care you could accidentally touch the mains….a disaster!

another tip is to take all metal rings off when working with 240 volts

I've a Sega Saturn with an interesting fault, it stopped displaying any sprites. The game loads and can play. You see game background, but no sprites showing.

Is anyone NOT sponsored by PCBway? Anyone? Beuller?

👍

There's no power supply that can resist you :)

What type of desolder gun do u use? From aliexpress or :)

@ralphj4012

Жыл бұрын

If you are UK-based you can get one from CPC (resources and help, bargain corner, tools, soldering) for £64.75, keep it to yourself.

@Mymatevince

Жыл бұрын

My one was from CPC as Ralph mentioned 👍👍👍

@turji

Жыл бұрын

@@Mymatevince Thank u, but i'm from Norway, guess il go for aliexpress then. Good video btw, have learned quite a few tricks from you over the years👍

27:13 Game Over Yeahhh!!!

keeps it from the landfill

Good gob

...and now order a FENRIR for the Saturn and show how to put that in and have fun with an ODE :)

Why didn't you check you had mains going in, instead of checking supply out

I have always wanted a sega saturn but never been able to afford one and probably wont be able to now that I am unable to work and going through cancer treatment.

To be this good takes ECNIV.

You didn't break the switch, you just happened to find a way not to remove the switch cover lol.

@Mymatevince

Жыл бұрын

🤣👍

Weren't you supposed to connect the power button when you tested your known good one with the bad mosfet? 😅

@Mymatevince

Жыл бұрын

I was Adrian 🤣🤣🤣 messed up there!

Look Ma I'm dancing

❤

It looks like both models got the same motherboard revision as well😅

23:40 it is not turned on by bridging the button so no you have not proven it ;)

You oughta wear insulation gloves when dealing with high tension. Just saying.

Saturn... thumbs up

The boards in old stuff almost never break down couse they are built to last

Very Long Easy Right... Maybe. GAME OVER Yeahhhhhh.

You forgot to connect the switch to the working board???????????

@Mymatevince

Жыл бұрын

I know!!! Schoolboy error there. The chip was definitely faulty though👍👍👍

Not sure if you did it off camera but you didn't actually prove the fault 100%, you never put a power switch on the second PSU, you had the first one bridged 🤣 Also RE loads, switching mode PSUs (if they have a bridge rectifier) are fine without any load, its only really an issue on linear PSUs (with a transformer).

@Mymatevince

Жыл бұрын

I didn't even do it off camera....can't believe I missed that!!!!!😂

Couldn’t work out why you needed to remove the power switch 🤷‍♂️