DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 140 - diyAudio
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Old 22nd March 2012, 08:24 PM   #1391
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Quote:
Originally Posted by bcmbob View Post
Right side chip sure looks like L7612CV to me. Would that be wrong part?
See attachment:

Click the image to open in full size.

I'm afraid you swapped regs...

Possibly also LM117-5 and LM117-3 are burnt, maybe the DAC chip...
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Old 22nd March 2012, 08:29 PM   #1392
bcmbob is offline bcmbob  United States
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OOPS ! Changing now.

Thanks Fan.
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Old 22nd March 2012, 10:18 PM   #1393
VT67 is offline VT67  Belgium
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Just for the heck of it, I just ordered me one of these DAC's.
Really curious how it will sound.

Regards
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Old 22nd March 2012, 10:41 PM   #1394
bcmbob is offline bcmbob  United States
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ANNOUNCEMENT ! New restaurant in Michigan - Featuring sausage and fried chips. Come one, come all.

Dario and Fan are correct as the readings show. I remember separating out the 9cv from the 12 cvs but never took a close look at the board markings. Details, details, details.

So I need to order:
1 LM812CV
1 AK4393
2 LM117-3.3v
1 LM117-5v

Anything else that might be suspect ?

Hopefully my mistake will help others avoid the same.
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Last edited by bcmbob; 22nd March 2012 at 10:45 PM.
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Old 22nd March 2012, 10:51 PM   #1395
F1 FAN is offline F1 FAN  Canada
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You may be lucky and only have damaged the lm78/79.
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Old 22nd March 2012, 10:54 PM   #1396
hotiron is offline hotiron  Scotland
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There is a slim chance that you could get away with putting new regulators in you get these from radio shack tomorrow.
Do you have the ability to solder a new AK chip onto the board?
Try changing the 12V regs first, you might just get lucky.
if not get a new board and save yourself the grief.
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Old 22nd March 2012, 11:07 PM   #1397
bcmbob is offline bcmbob  United States
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Hi guys, Glad to know I might be able to get some items from RS. Yes, I have soldered several surface mount chips successfully. I had planned to re-populate the board with Dario's upgrades so this will just be a little more practice. I've had good luck with a hot air gun for desoldering.

Thanks All.
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Old 22nd March 2012, 11:09 PM   #1398
Ryssen is offline Ryssen  Sweden
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Just for the heck of it, I just ordered me one of these DAC's.
Really curious how it will sound.
And I ordered 2 output trafos from Jensen..
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Old 22nd March 2012, 11:17 PM   #1399
VT67 is offline VT67  Belgium
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Not looking for a true high-end DAC here, just curious if a modded version of this thingie will outperform the DAC of my Logitech Duet of my bedroom system.

Regards
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Old 22nd March 2012, 11:19 PM   #1400
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Quote:
Originally Posted by bcmbob View Post
ANNOUNCEMENT ! New restaurant in Michigan - Featuring sausage and fried chips. Come one, come all.


Quote:
Originally Posted by bcmbob View Post
So I need to order:
1 LM812CV
1 AK4393
2 LM117-3.3v
1 LM117-5v
Order an AKM4396, much better.

Also electrolythic caps on rails path can be blown.

But first replace the two LM7812/LM7912, maybe the rest is good.
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