First DIY project, Charlize problem

atldiyr · 11th September 2008, 03:21 PM

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

Andrewbee · 11th September 2008, 07:14 PM

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

atldiyr · 12th September 2008, 07:03 AM

Thanks for the advice - I'll try that.

egonnaud · 15th September 2008, 07:42 PM

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.

11th September 2008, 03:21 PM	#1
atldiyr diyAudio Member Join Date: Sep 2008	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

11th September 2008, 07:14 PM	#2
Andrewbee diyAudio Member Join Date: Apr 2002 Location: Cayman Islands	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 __________________ None of us are leaving this world alive. Enjoy it responsibly as you may.

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12th September 2008, 07:03 AM	#3
atldiyr diyAudio Member Join Date: Sep 2008	Thanks for the advice - I'll try that.

15th September 2008, 07:42 PM	#4
egonnaud diyAudio Member Join Date: Jan 2008	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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