Replacement AC adaptor for a PAL SNES?

Yes it would work if you changed the tip to 2.5mm.

 

Did you also get some 5.5 x 2.5mm dc tips to suit?

 

Nah. I'd assumed that since the photo looks exactly the same as another AC adaptor I found, one which said it's plug was 5.5mm x 2.0mm-2.5mm that this one would fit too. Am I wrong?

 

I use a Genesis power supply in my ntsc NES

 

US NES adapter has the same output rating as PAL SNES too. If you've already got a 110v power converter.

 

PAL SNESes (and even the first NTSC SNES revisions) have a diode bridge & cap before the 7805 regulator, so it should be safe to use any dc supply between 7-10V and with >1A rating, either plug polarity. 12V dc supplies should be fine too but then the regulator gets hotter.

 

Actually just checked it, since I found those "nice" power supplies from that seller, I bought a few of them while they had them lol! I tried it on my PAL NES (which uses the same DC tip) and it fit's perfectly! So if you get the same power supply as mine you will have kicked a goal!

 

Stick to AC for the PAL SNES (and NES), you might shorten the life of the console otherwise. You can always take apart a 9V DC adapter and simply bridge or remove the rectifier (and capacitor etc) to get pure AC from the transformer secondary. IIRC that's all there is inside the PAL SNES adapter (a transformer and nothing else).

 

Care to elaborate on that? You are running a DC voltage through a simple rectifier block, instead of using all 4 diodes in the block, it only uses 2 of them as a simple pass-through. In theory you could remove the rectifier block in the console and simply connect up the relevant lines to use use the DC power supply, but there is no reason why.

When I worked as an electrical fitter (now electrical drafter) it was common to use in industrial purposes a rectifier block after a dc power supply to stop reverse polarity incidents damaging the power supply itself. Such as uses in a battery charger, if someone hooks up the battery reverse polarity, the rectifier block stops the reverse voltage getting to the power supply.

These power supplies are switchmode and have no transformer.

 

That's what I figured Thanks for checking though!

 

Just trying to keep things simple as possible. If I was looking for an adapter for the PAL SNES I'd rather prefer to stick to the specification and use AC. If that means modifying a standard (non-SMPS) DC adapter as a last resort, then sure I'd prefer to do that. To each his own I guess.

 

The AC adapter that omp linked me to arrived! It not only fits, but appears to function fine! It looks a little different from the one in his photo, but whatever. Thanks for the help guys!

 

UK SNES consoles and NES too, use AC power supply. Seems strange because then the circuit goes into converting it to DC and then into a 7805 to run the system at 5v DC anyway! Frankly, if you don't mind opening up the console, wire your power supply to the 7805 directly (obviously via the main switch, if you want to use that as your on/off switch, change the wiring appropriately). That way, you can use any DC power supply from 7v - 16v DC, 900mA or more should be ok.

Getting official SNES/NES power supplies isn't cheap, so this is a good alternative. Just make sure if you open your SNES that you turn the system on and off a few times with power disconnected, to drain the capacitors, or your board will contain enough voltage in the capacitors to fry your console when you work on it.

 

Rather than re-wiring the power, I think it's easier to pay $7 for a 3rd party AC adaptor that seems to work fine The fuse does a pretty good job at protecting the SNES. I remember one time the power switch fell off it's stand and created a short with the RF shield. Fuse went pop

 

You dont need to rewire anything. The first thing in a PAL snes is a rectifier that converts the AC to DC. If you just put DC through it, you get just DC. Also, because of this rectifier, you can use either polarity PSU and it will work just fine.

 

That's a good tip.

 

Hmm... I´m pretty sure the reason I just bricked my 1 chip snes last thursday was because I fed it the wrong polarity DC current. (Not standard power supply. Power light flashed on for half a second and then it was off. No light would come to it since no matter which way I wired the psu.) Now if that should not have happened, then I´ve now become very, very confused. I´m hoping it is just the 7805 and/or fuse.

Anyways. Big facepalm, but someone might fix it

 

That's a good point actually, colour me confused now too.

Ac is rectified to dc in the pal consoles. So polarity shouldn't matter.

 

:applause:

 

American or european snes?