Repairing left channel in Lepai 2020 ??? - diyAudio
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Old 29th June 2012, 07:26 PM   #1
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Default Repairing left channel in Lepai 2020 ???

Hey All.

I'm amplifier stupid. I don't have a clue what I'm doing. I try and offer lots of help in the speaker categories. So I'm hoping I can receive some help here.

Lately, the left channel in my $20 lepai 2020 for my desktop started crapping out. Now it doesn't come on at all, unless I press my finger down on this:

Click the image to open in full size.

It says 100 on top of it, and 150 beside it. I assume the solder connection has been broken.

Do I have to replace this part? Or do I just re-solder it? I'm not much of one for electronics, so please, easy

Thanks.
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Old 29th June 2012, 07:32 PM   #2
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I'd resolder everything which is near the area.
The part that you have indicated is an output inductor.
It looks like there is a relay sitting beside the inductor. It's possible that one of the contacts on the relay isn't making a good connection.
If the problem is the relay, it will cost more to replace the relay than to replace the entire amplifier.
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Old 29th June 2012, 07:36 PM   #3
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Ditto what Franks says. You've got a bad solder either at the inductor or the relay. Both are in series with the output.
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Old 29th June 2012, 07:40 PM   #4
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Quote:
Originally Posted by Frank Berry View Post
I'd resolder everything which is near the area.
I thought that might be the recommendation. You don't wanna see my soldering. Even my speaker cross overs are ugly

Ok, so to do this on the bottom of the board, I'll just reflow the solder there?

Quote:
Originally Posted by Frank Berry View Post
If the problem is the relay, it will cost more to replace the relay than to replace the entire amplifier.
Ha! Ya, that sounds about right. When I push down on that the left channel comes back in. So it could be either I suppose. Here's hoping it's a solder connection.

Thanks for the help.
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Old 29th June 2012, 07:59 PM   #5
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Practice your soldering skills. It's easy once you know how to solder properly.
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Old 29th June 2012, 08:35 PM   #6
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Thanks Frank.

If I botch this, I think I'll buy something better quality
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