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Old 12th October 2012, 07:54 AM   #2851
Shike is offline Shike  United States
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Quote:
Originally Posted by Steve Eddy View Post
Anybody know what's become of RocketScientist? He hasn't posted here since July and the last entry on is blog was back in May.

se
I must say, I've been concerned too. He hasn't approved any comments since Aug. 28th, and apparently people haven't gotten hold of him via email either.

It'd be a shame if the community lost him.
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Old 12th October 2012, 04:49 PM   #2852
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Poof... and my amp just turned off.

I am sitting at a coffee house enjoying music on my O2 and all of a sudden I fear a poof and no sound comes out. The headphones are fine. Thank god. I assembled the amp about a month ago. Did all the initial testing and every number was spot on. I didn't drop the amp, didn't even touch it and I stopped working. The LED is still on but completely no sound comes on.

Any of this ever happen to anyone? How do I even start to troubleshoot?
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Old 12th October 2012, 07:36 PM   #2853
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Repeating "all the initial testing" seems like a good idea to me.
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Old 13th October 2012, 11:00 PM   #2854
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Well dumb me, the batteries just ran out....
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Old 14th October 2012, 09:55 AM   #2855
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Quote:
Originally Posted by Shike View Post
I must say, I've been concerned too. He hasn't approved any comments since Aug. 28th, and apparently people haven't gotten hold of him via email either.

It'd be a shame if the community lost him.
According to the JDS Labs blog, his commercial partners seem to have had no better luck getting hold of him, and have arrived at the conclusion that he's taking an extended break from everything.

The way his comment updates tailed off gradually would seem to suggest that, along with his repeated allusions to a very heavy workload - I just hope he comes back again!
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Old 14th October 2012, 11:16 AM   #2856
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I don't know if this is the appropriate part of the forum, but I've got a question regarding my O2 amp. I've participated in the group buy but only recently started to assemble the amp, and;

C 16 is missing and I need to replace it somehow.
It's got a value of 22nf or 0.022f.
Data sheet says it's supposed to be spec'd at 50V (ceramic cap.)

How critical are the volts in the application the cap sits in?
Can I buy a 100V spec'd variant? I know that it affects how much charge the cap can hold, but is it a critical spec?
I only need on part of the cap and so I thought about ordering on ebay, only thing is they don't have 50V spec'd caps.

I'd appreciate input
All the best guys.
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Old 14th October 2012, 12:04 PM   #2857
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I don't think it's overly critical (the BOM even states "non critical part"). I would buy 2, though, to fit both C16 and C21. But that's just me.
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Old 14th October 2012, 12:49 PM   #2858
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Originally Posted by sofaspud View Post
I don't think it's overly critical (the BOM even states "non critical part"). I would buy 2, though, to fit both C16 and C21. But that's just me.
Thank you very much
One 22nF was included the other one wasn't so I really only need 1.
They come bundled in 10 on ebay though, so I'm stocked I guess.
I haven't read the remark about "non critical part", sorry

But, better be safe than sorry, right?
All the best.
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Old 15th October 2012, 08:12 AM   #2859
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Since you are buying different one than the one you already have it would be best to use new one for both positions C16 and C21.
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Old 15th October 2012, 08:57 AM   #2860
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Originally Posted by zoidbergslo View Post
Since you are buying different one than the one you already have it would be best to use new one for both positions C16 and C21.
Okay, noted.
That's a good tip, thank you very much.
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