DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 244 - diyAudio
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Old 22nd February 2013, 10:13 PM   #2431
tofurky is offline tofurky  United States
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Quote:
Originally Posted by reg66 View Post
sorry to trouble you clave, i'm trying to this without asking you too many questions and also not pester my dad too much...
but, to the right of C28 is a capacitor that is unmarked according to your paths and numbering diagram. what goes there?
pretty sure its the 1uf 50v
-matt
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Old 22nd February 2013, 10:20 PM   #2432
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yep, it says 1u at that point, so that would make sense. but does this mean just use the stock one, or should i have ordered it? i can't see it on the BOM
i know i seem to have answered my own question because it's not on the BOM, but i just want to make sure...
oh, and thanks for the prompt reply!!

Last edited by reg66; 22nd February 2013 at 10:27 PM.
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Old 23rd February 2013, 09:58 AM   #2433
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Quote:
Originally Posted by reg66 View Post
yep, it says 1u at that point, so that would make sense. but does this mean just use the stock one, or should i have ordered it? i can't see it on the BOM
Use the stock one, that cap decouples the chip driving the leds... not in signal path.
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Old 23rd February 2013, 10:49 AM   #2434
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thanks very much indeed
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Old 23rd February 2013, 01:00 PM   #2435
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i'm quite nervous about soldering the brown dog together (this is my first soldering project!). i have some very thin solder and a fine tipped iron. do you think the direct approach is ok, or is there some more reliable technique. i've seen clave mention tacky flux, but it expensive for a tube. being my first project, i'm quite cumbersome when it comes to soldering. any advice is much appreciated
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Old 23rd February 2013, 01:11 PM   #2436
atupi is offline atupi  Romania
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There is nothing to be afraid of, just make sure you clean with alcohol the small browndog pcb. Solder just one terminal of opamp and check if the other pins are alligned and solder one by one. Make sure you have enough light and if you feel the need use a magnifying lens. If, by mistake, some pins are bridged use solder wick to take out the unneeded solder.
Good luck !
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Old 2nd March 2013, 12:28 AM   #2437
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Damn, I damaged my ak4396 dac.
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Old 3rd March 2013, 03:16 PM   #2438
mepper is offline mepper  United Kingdom
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Default Blowing fuses

Hi all, finished assembling mine this morning using Dario's BOM - thanks so much for putting it together Dario!

Only problem so far is it's blowing the IEC socket's fuse at power-on about 50% of the time, and I'm already up to a 250mA (fast blow) which is quite a bit higher than the 100mA or so I've found mentioned in a few posts in this thread. What's everyone else using?

I have a 230V RN-20 R-core transformer btw - pretty standard there.

Thanks!
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Old 3rd March 2013, 03:47 PM   #2439
bcmbob is offline bcmbob  United States
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I have also had several fuses blow and it seems it is related to on/off surge. I'm up to 3 amp slo-blo on the U.S 120 volt format.

How do you like the sound? (assuming it has stayed on long enough)
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Last edited by bcmbob; 3rd March 2013 at 03:50 PM.
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Old 3rd March 2013, 04:25 PM   #2440
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Bob, I am using 1 amp slow blow fuses. The problem is the transformer initially pulls a high current to form the magnetic field and charge the capacitors. Then it settles down to a lower current draw.

P.s. my transformer is 120VA with 4 sets of 15v-0-15v 30w secondary's, so 250ma fuse should work in slow blow form...
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