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Old 11th September 2008, 03:21 PM   #1
atldiyr is offline atldiyr  United States
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Default First DIY project, Charlize problem

I recently bought a Charlize2 amp and after making all the solder connections am only getting sound from one channel, the left channel. The right channel is dead. When I turn on power to the amp which I measured at 12.57 vdc (I'm using a lithium-ion 11.1 v battery) I hear a distinct click from the left speaker and a fainter click in the right speaker. I did a continuity check from the mp3 player I'm using as a source up to where the input is soldered to the board. My eyesight is not the greatest but all the solder connections look alright to me. Is there a way to troubleshoot this - I don't have access to an oscilloscope. I don't see any physical damage to any of the components. (And of course have not seen any smoke from anything.) I don't suppose it would make any sense to take it to some type of audio repair, would it? By the way the MP3 player I hooked it up to was an iRiver model and have not seen any ill effects to the player from all of this.

Thanks,
Mike
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Old 11th September 2008, 07:14 PM   #2
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Did you try diyparadise.com?
That is where Charlize is from. I am sure Yeo would be glad to assist you in getting it going. I have the original version and its a fantastic amp.

Andrew
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Old 12th September 2008, 07:03 AM   #3
atldiyr is offline atldiyr  United States
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Thanks for the advice - I'll try that.
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Old 15th September 2008, 07:42 PM   #4
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since you can hear a click on both speakers it looks like you may have a problem on the input part.

Did you check ?:

- Signal and ground are not reversed on both inputs ?
- Measure DC offset on inputs ?
- Bad interconnect connexion from your iriver (try moving the cable while playing) ?

Hope this helps.
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