Speaker not working on Circuit Sword Lite

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TeeReQs
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Speaker not working on Circuit Sword Lite

Post by TeeReQs » Sun Aug 04, 2019 11:58 pm

Just built up my CSL, and everything is working great except the speaker. I get sound from the headphone jack, but nothing from the speaker. I've tried the stock speaker as well as a VECO with the same results. With the speaker unplugged and system turned on I'm getting a voltage reading of .281v on the (-) pad and .181v on the (+) pad. I came across another thread that mentioned that they should be 1.6v each. Anybody have any insight on what could be my issue? Thanks!

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kite
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Re: Speaker not working on Circuit Sword Lite

Post by kite » Mon Aug 05, 2019 12:53 am

Could you take a picture of the area at the bottom of the board where the headphone jack and amp is (the black chips near it)?

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Re: Speaker not working on Circuit Sword Lite

Post by TeeReQs » Mon Aug 05, 2019 1:09 am

Let me know if this is what you're looking for Thanks for the quick reply!
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Re: Speaker not working on Circuit Sword Lite

Post by kite » Mon Aug 05, 2019 2:22 am

Hm looks ok, could you take a picture of the other side of the headphone jack? If you poke the jack itself, do any of the solder pads move like they have been ripped/disconnected from the main board? Does everything else function on the CSL as intended (safe shutdown, button inputs, etc)?

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Re: Speaker not working on Circuit Sword Lite

Post by TeeReQs » Mon Aug 05, 2019 10:14 am

I attached a picture of the backside of the headphone jack. Its solid with no movement at the solder pads. I get sound through earbuds when plugged into the jack, just no external sound from the speaker.

Everything else works great as far as I can tell: safe shutdown, all buttons including shoulder buttons, mode button, etc. I haven't tried the USB port, but the little dip switch is set to it being off.
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Re: Speaker not working on Circuit Sword Lite

Post by TeeReQs » Tue Aug 06, 2019 5:00 pm

Any other suggestions on what I can try or test?

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Re: Speaker not working on Circuit Sword Lite

Post by kite » Wed Aug 07, 2019 4:05 am

Ok all looks good.

On the other side, where the audio amp is, do you see the capacitors C17 and C18? It looks like on the top side they have a little bit of solder in the wrong place joining them. With a soldering iron, try and carefully remove this join and see if that's causing it

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Re: Speaker not working on Circuit Sword Lite

Post by TeeReQs » Wed Aug 07, 2019 11:06 am

kite wrote:
Wed Aug 07, 2019 4:05 am
Ok all looks good.

On the other side, where the audio amp is, do you see the capacitors C17 and C18? It looks like on the top side they have a little bit of solder in the wrong place joining them. With a soldering iron, try and carefully remove this join and see if that's causing it
I see that too now that you mention it. I'll take a closer look once I get home, and see if that is the issue.

Thanks!

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Re: Speaker not working on Circuit Sword Lite

Post by TeeReQs » Fri Aug 09, 2019 12:22 am

That fixed it, speaker works now. Thanks Kite for the eagle eyes!
Last edited by TeeReQs on Fri Aug 09, 2019 9:07 am, edited 1 time in total.

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Re: Speaker not working on Circuit Sword Lite

Post by kite » Fri Aug 09, 2019 2:21 am

Fantastic! :) That's great news!

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