2am last night i found your video.. by 2pm id gone to a video game store, picked up a new (used?) power supply and my original genesis is back up and running. thanks so much
Not only did swapping out the power cable stop the buzzing in the sound, but my Power Base Converter started working again. I didn't know where to start with trouble shooting all the hardware, and the fix was a $15 AC adapter. Thank you.
This video was a life saver! I thought I was smart my plugging in a different power supply to conserve space on the power strip, but then ended up the awful buzzing. Would have never thought the power supply would have been the issue, but it fixed it immediately when I plugged in the a separate power supply!
Wow. Changed tv’s and bought new AV cords and even tried different units. Only thing left to try is the power cord supply. Hope it works. Never thought it’d be that. Thanks for the video.
Thanks man. You were correct. I was using an old master system power supply for my Model 1 Genesis and it was super noisy. Swapped the power supply for a different Master System power supply and boom, no more noise!
Solved my problem. I had a Genesis 1 plugged in through RF. I assumed the buzzing was a result of that. I got a composite cable with stereo audio which made the picture crystal clear, but the buzzing persisted. Swapping the power supply solved it entirely, so now I have gorgeous, crystal clear stereo sound and great composite picture. Couldn't possibly be happier.
I got my second Genesis and made it my first Model 1 and a second Everdrive just for... *drumroll* Master System stating xP So a second HDRetrovision component too on my precious boobtubes I mean CRTs I noticed the yucky buzzing but it'd be like four-five minutes later and goes away.. and then yesterday kicking it with bud in my yard in the laundrymat I tried to show it off but the buzz would not die My question is just to order another MK-1602 brick? Just a another roll-of-the-dice I am assuming?
I have the exact same problem, gonna change the caps inside the power supply, not because I can't buy another one, but because I want the original one to work for as long as possible. With how expensive retro stuff has been getting lately I think is a good idea to start repairing some if this parts that we usually just toss away. If that fixes it I'll come back here with a reply for my own comment.
I think you could help me with my problem. I have a model 1601, which I brought recently, and when I plugged it in, it didn't turn on. I even used a radio shack plug, and it still didn't work. I think it might be it s need a new ac adapter, but I'm starting to think I should consult someone with experience. Do you think it is an ac adapter, or do I need to start looking up repair shops?
If you get a generic one with less than 4.5 out of 5 star reviews, measure the voltage out of it first. Ordered a generic one off Amazon once, and it measured at 18 volts, 7.5 higher than what it was rated, which explained some of the reviews saying it fried their Sega Nomads.
Thanks I haven't fixed it yet but I realize what the problem is with the buzzing. Maybe do a video of swapping capacitors in the power supply and see how that goes!
Thank you. Very helpful. Probably too helpful haha however I now know I need a new power supply for my buzzing megadrive which also has waves appearing slightly virtically on my TV.
Perfect! Now what about the voltage output on a used power supply. I heard someone else on RU-vid say that the gen1 power supply is 9V output and gen 2 and newer use a 10v output.
replaced all caps with console5's kit. sounds exactly the same as it did before.. red wire (front audio jack) is super loud, but white wire is normal volume. volume slider works fine. using coax cable in the back (which i think mixes both channels into mono) also has the blaring loud audio.
Great video bro. I actually just got a 1988 first edition Sega Mega Drive. Upon testing it, I'm also getting that same buzzing noise you are but not as bad. I tried switching power supplies, but still getting the buzzing. just like you, I swapped power supplies between my model 1 Genesis and my model 1 Mega Drive. I still get the buzzing noise on Mega Drive though. But no buzzing on my model 1 Genesis. ...What you suggest? :(
OK so I'm a lemon, feel free to mock me :p but this might be a common error: For me I had a gamepad plugged in with a poor man's slowmo mode, which just hits start rapidly to pause over and over, and as I'm playing through an AV unit, this causes choppy sound and graphics due to syncing. The switch had gotten moved while the pad was in storage - Duh brain! Also for bonus points, if the colour is weird or black and white - just make sure if using the AV out connector, it's the right way up as they are bossible to put in at many different rotations. Lucky I figured this out before recapping!
Awsome, I love SEGA GENESIS on stereo head phones 🎧🎼🎚🎛🎵🎶 I'll try switching power supply's because I got my cords mixed up I got two Sega's. Both models are #1 High Definition Graphics LABEL one has rainbow banding graphics and the power pack burns cool while the system burns hot that's the original power cord. The other SEGA GENESIS MODEL #1, dosen't have the High Definition Graphics label and It has better graphics with NO RAINBOW BANDING and the system keeps cooler and dose not burn hot the power pack burns hotter then the system. Which I bleave it is better for the power pack to burn hot and not the system.... This is the reason behind the slight buzzing noise I'm experiencing I'm gona fix this tommarow... nice video ☯️🙏😎
Great video overall, but it probably could’ve been truncated by about 4-5minutes. You went into a very in-depth analysis of the voltages and the waves and the directions and this and that - interesting stuff to the electronics or even science type of person, but to the average person - just unnecessary information. All they would have needed to hear was - “try a different power supply, Yours might be faulty”.. 😎
@@JohnnyangelNIU Thanks. But that wasn't the video I really wanted to make at the time. Or at least that wasn't my thought process when I was recording it. If I get back into making vids, perhaps I'll do a conclusion summary in the beginning, then do the rest after.
MD/Genesis has two 7805 voltage regulators which convert PSU's voltage to super smooth 5V. Pulsing of the PSU shouldn't matter as long as it doesn't drop below 7.5V (minimum input voltage requirement for 7805). I've checked my 3rd party PSU with oscilloscope and it's quite smooth but I still get the buzz at the headphone jack. I was suspecting the old caps but now, after watching this video, I'll try the original PSU.
I wish I'd watched this before doing the same as you. Recapped the full system (38 caps 2 voltage regulators) just to find same issue. Tested my PSU and it's outputting 13.6v. That'll do it 🤦
