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NES Capacitor blown

post #1 of 8
7/23/12 at 6:24pm
Thread Starter 
Hey there,

Today i tried to power my old (fake) NES, wich is actually a Super Com entertainment computer system 72, an 8 bit NES inside of a Euro Super Nintendo or Famicom case.
So i just plugged in the AC adapter that i found next to the system, so i assumed it was the right one, and just 20 seconds later it went BOOM! and there was lots of smoke coming out of the vent holes.
So i removed the screws to take a look inside what the hell that was, and i found a blown capacitor, and another one that got of the circuit board.
Here are some pics







The rest of the system seems fine

So can i replace the caps? and should i use a different AC adapter?

Thank you very much!
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post #2 of 8
7/23/12 at 7:13pm
Yes do replace the caps. Depending on how old the power supply is what determines if you need to replace it, so I don't replace that just yet.. Just try to match the caps as much as possible. You can use a site like Digikey to help with replacements. You may find out that when you replace the caps, it's a good chance they put cheap caps in the system and the power supply is fine. Good Luck
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post #3 of 8
7/24/12 at 10:31am
Thread Starter 
Thanks!
I will see if i can get somebody to replace the caps, because i don't even have the tools to do it.
And you think the reason for blowing it up was because of the wrong AC adapter?
Or just because it's so old and hasn't been turned on for about 20 years?
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post #4 of 8
7/30/12 at 3:00am
  • Artikbot
  • It's not an arrow. It's a... Pencil!
Don't go over the top with the repair, as an original NES (toaster style) sells around 25€ barebones in Spain, on the US it should be even lower.

If you have a soldering iron, do it yourself, it will cost at most $2.

The reason why it blew has to be wrong adapter. Old capacitors just puff and leak, but they do not go up in flames like yours did. For reference, my Spanish toaster NES has a 9V 1.2A power adapter.

It could be bad quality capacitors, I don't know about the fake NESs build quality, but my original one has some proper quality Nippon Chemi and Nichicons in it.
Edited by Artikbot - 7/30/12 at 3:03am
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post #5 of 8
7/30/12 at 3:06am
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i would just get the caps on ebay. digikey can be a tad expensive for shipping 2 caps.
personally i use digikey a lot! so when i make an order it's never less than 25 parts per item i order while the total order usually is in the range of about $200 worth of electronics at the min.
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post #6 of 8
7/30/12 at 11:14am
Thread Starter 
Yea, i wan't really thinking straight when i plugged in the AC adapter, i used a 12v adapter that had giant letters saying "USE ONLY FOR IEC 950 ONLY" tongue.gif
It was only 1 capacitor that blew, and they are only 36 cents here..
I only need to find somebody that can replace it for me, i have totally no tools to do this redface.gif
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post #7 of 8
7/30/12 at 5:56pm
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if you are willing to do the work yourself.
soldering station $14.95 http://www.mpja.com/Mini-Solder-Station-ZD-99/productinfo/15860+TL/
i personally use this one, it's cheaper than any other station out there with the same options but the quality is above anything i would expect for that price. you can actually find a weller brand, identical to this one for $60 online.

then you just need solder (lead free and about as thin as you can get it) could just go to radio shack to get it, like myself.
next you want no-clean solder wick (Solder Wick is made from fine copper wire woven together with a no-clean flux formula added to it. this will remove the solder that the caps are stuck to the board with.)

you could skip the solder wick and just clip the legs of the caps blown, then just solder to those legs, that would be sticking out of the PCB (printed circuit board)
caps have a positive and negative side. it would be good to label the board before removing these so that you don't put them in wrong.
caps are the same idea as a battery, power comes in, and then they keep power from spiking on the board. they keep other components protected.

honestly soldering to those legs would be crazy easy.
you also might really enjoy doing it.
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post #8 of 8
7/30/12 at 7:54pm
Thread Starter 
Thanks! i also watched some clips on Youtube how to do this and it looks very easy indeed, and also fun smile.gif
I might pick up that station and practice a little.
I'll update if anything happens smile.gif
(I'm going on a holiday in France in a couple of hours.. so it's gonna take a week before i get to do anything)
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