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Any electronics/voltage experts?

 
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methdxman



Joined: 14 Sep 2010

PostPosted: Wed May 23, 2012 8:37 pm    Post subject: Any electronics/voltage experts? Reply with quote

Here's the story:

My friend brought over an Airplay speaker for me, and I negligently plugged it into a socket here (with an end adapter) but I realized that the device was 120 and not 220.

Long story short, I plugged it in and I heard a POP, which I am hoping was just a fuse in the external brick adapter and not from the device itself.

Question:

Can I find a 220 external power brick adapter in Korea which works universally for devices? Or should I get a new 120 one from the U.S. and just use a transformer?

How can I even test to see if my actual speakers were blown vs. the power brick?

Cheers.
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singerdude



Joined: 18 Jul 2009

PostPosted: Wed May 23, 2012 9:56 pm    Post subject: Reply with quote

Do the airplays have speaker binding posts in the back? If so, and you have a receiver, you can try attaching some speaker wire from your amp. That way, you wouldn't have to buy a new brick just to test the speakers.
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methdxman



Joined: 14 Sep 2010

PostPosted: Thu May 24, 2012 12:11 am    Post subject: Reply with quote

singerdude wrote:
Do the airplays have speaker binding posts in the back? If so, and you have a receiver, you can try attaching some speaker wire from your amp. That way, you wouldn't have to buy a new brick just to test the speakers.


Nope it's an all in one unit...
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ttompatz



Joined: 05 Sep 2005
Location: Kwangju, South Korea

PostPosted: Thu May 24, 2012 2:27 am    Post subject: Reply with quote

What is the output rating on the brick for your speakers?

input 110-125VAC, 60hz...
output ?????


Yes, there are universal AC/DC adapters. The one you need will depend on the output.

Where to get it will depend on the size you need (output voltage and amp required (watts) as written on the brick.

.
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methdxman



Joined: 14 Sep 2010

PostPosted: Thu May 24, 2012 6:54 am    Post subject: Reply with quote

ttompatz wrote:
What is the output rating on the brick for your speakers?

input 110-125VAC, 60hz...
output ?????


Yes, there are universal AC/DC adapters. The one you need will depend on the output.

Where to get it will depend on the size you need (output voltage and amp required (watts) as written on the brick.

.


Of course it had to be you Ttompatz! haha

Says on the brick
Input: 100-127V, 50-60Hz, 1.8A
Output: -22V 0.5A
+22V 0.5A

on the unit itself it says:

Input: -22V 0.5A
+22V 0.5A

For both Input and Output there are three dashes with a straight line right on top of it... can show you a pic if you like.
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ttompatz



Joined: 05 Sep 2005
Location: Kwangju, South Korea

PostPosted: Thu May 24, 2012 2:59 pm    Post subject: Reply with quote

PS replied to but for general information:

The output of that particular brick is not common and it will be hard to replace.

You may find a replacement in Yongsan in the alley between the seon-in plaza and the bank or alternatively look in the basement of the place across the street from the nanjin arcade on your way to the seon-in plaza.

It may not be cost effective to get a replacement brick sent from home. The cost of the brick and shipping may very well exceed the cost of a new set of speakers (look at the vendors around the nanjin arcade for decent prices on new speakers).

You speakers themselves should be fine. The brick has no fuses, just solid state electronics and a transformer and would have taken the brunt of your mistake. The POP sound would have been the coil on the transformer burning up from the high voltage (burnt wire smell) or the rectifier exploding inside the brick.

.
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methdxman



Joined: 14 Sep 2010

PostPosted: Thu May 24, 2012 3:56 pm    Post subject: Reply with quote

ttompatz wrote:
PS replied to but for general information:

The output of that particular brick is not common and it will be hard to replace.

You may find a replacement in Yongsan in the alley between the seon-in plaza and the bank or alternatively look in the basement of the place across the street from the nanjin arcade on your way to the seon-in plaza.

It may not be cost effective to get a replacement brick sent from home. The cost of the brick and shipping may very well exceed the cost of a new set of speakers (look at the vendors around the nanjin arcade for decent prices on new speakers).

You speakers themselves should be fine. The brick has no fuses, just solid state electronics and a transformer and would have taken the brunt of your mistake. The POP sound would have been the coil on the transformer burning up from the high voltage (burnt wire smell) or the rectifier exploding inside the brick.

.


Great info, thanks as always... the dock/speakers are worth $300 usd so I would like to save them. Crappy that they didn't make it more internationally friendly... hmm... also the power input to the set look like the old PS/2 mouse/keyboard plugs (obviously it's not). That may pose an issue...
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nathanrutledge



Joined: 01 May 2008
Location: Marakesh

PostPosted: Sat May 26, 2012 8:56 pm    Post subject: Reply with quote

Just my two cents -

Smell it. Can you smell something burned in the brick? If so, that's what burned up.

Also, when you plugged it in, did it pop immediately or was there some time between plugging it in and popping? If it popped instantly, then it could be a fuse in the speakers. If it took a while, then it's probably the transformer. There MIGHT be a fuse in the transformer, but I doubt it.

In my experience, had a friend with a US Nintendo Wii that he plugged in. We played on it for about 30 minutes before we heard a pop and the transformer burst into flames.

The area ttompatz is talking about is the best place to go. I've replaced a few worn out transformers there. But I'd do some reading online first. Do your speakers have fuses that can be replaced? Can you get to them? Are they okay? Etc... No sense in buying a new transformer if the whole speaker set is fried.
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