Atari Mega 1/Mega ST New Power Supply

I'm using a MeanWell RD 50A as a replacement for the original (elderly) internal power supply in my Atari Mega 1 (Mega ST).

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Thanks!

#JanBeta #Atari #MegaST

[Starchface]

Amazing - it's like the PSU was made for it. He's going to hack up the ST and make it worthless, I thought, but other than substituting a better PSU you really haven't changed anything. I like the kind of modification that can be completely reversed. Very nice.

I want to commend you for the tremendous improvement in the quality of your videos over the past years. You're very good at keeping the interesting and important parts while cutting out the fluff. The commentary, camera angles, editing - superb. You seem to know just what we want to see. Thank you so much for doing your part to preserve these fabulous machines from the past, and for educating and entertaining us in the process, Jan. That takes real artistry.

[xeeleeuniversum]

Nice work! But as an electrican I would suggest to use wire end sleeves (Aderendhülsen) for better electrical connection and avoid broken copper strings in the litz wire on screw terminals and the resulting conducting area reduction (overheat, short circuit and fire hazzard). :)


And your videos are really great.

[MindFlareRetro]

That worked out nicely. The Meanwell power supplies are very handy for a lot of retro computer gear. This one fit perfectly - almost like it was custom made. Great work!

[SaintKaede]

Anythin' to keep these old machines alive, if it calls for a new power supply why not. Sad to think that someday they won't work.

Good job as always Jan. Would love to see livestreams.

[p]

Interesting video and solution. It is a shame on the Mega ST that Atari did not include a VME bus and also full size 5'1/4 drive bay as it has enough room in it.

[leoatreides]

good idea. I was thinking about changing the caps in the PSU of all my old Ataris at some point, but changing the whole thing against a new one is a nicer solution. Especially as the old PSU in my original Atari ST1040 was allready problematic in the 80's...

[ridiculous_gaming]

It amazes me how so many people put down ST and Amiga mice...they are actually quite good and many parts can be replaced on these mice. They do and did the job and are far more reliable than what one purchases today.

[SuperJet_Spade]

This is a nice solution for anyone who's worried about the power supplies in these old computers

[ToddsNerdCave]

Great video! The Meanwell psus are great. I’ve used them in several machines.

[jameslewis]

These little power supplies really seem to be good replacements for vintage units that are getting to the end of their days. I have also seen this kind of PSU used in an Amiga's power brick which is probably a pretty good upgrade for A1200 owners since the original A1200 psu was stupidly cut down compaired, for instance, to the A500 version.

[redhawk]

I am still using the original power supply in my Mega ST4, I've replaced it's capacitors and the bridge rectifier. I've replaced some capacitors with higher values. It now puts out stable current and works perfectly.

[JaySmith-cdln]

Rick Dangerous, now there's a good reason to throw a joystick :) Great video Jan!

[doktor]

Hi Jan. I used the Mean Well PSU RT-50B for my Amiga 500. It works very well. I also had this whistling sound coming out of the PSU if no load is connected. I put the PSU directly into the Amiga 500 Power Brick. I think I will publish a video with the reconstruction the next week. See you, your Doktor64! :-)

[psyolent.]

awesome job mate. no smoke, nothing exploded :) complete win mate. love your work as always :)

[Nibb]

You should really use spade terminals on those wires for a good connection, especially the 220V mains input !
I would also 3D print a cover to fit over those connections, but it's probably not necessary.

[mikefellows]

Another great video Jan :o) Find these most informative and enjoyable to watch, many thanks !!

[quertize]

Not loaded switching psu's may make noise. I have old Nokia charger and when phone is charged I can hear it.

[povilasstaniulis]

My HTPC Raspberry Pi 3 is powered by a Phihong power supply. A 5V 3A one which originally came with my Asus T100TA.
They are decent supplies. Of course, yours is over 20 years old so a replacing it is definitely a good idea.

[RobUttley]

Nice one Jan. I'm about to put a Mean Well RT 65B into a new enclosure and wire up for an Amiga A500/A1200 PSU (following one of Ms Mad Lemon's videos).

Always enjoy the videos Jan, keep up the great work.

[LemmyCaution]

Another great video! 👍 Thank you, Jan.