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Crack;Bottlehead OTL - Page 127

post #1891 of 5982
Quote:
Originally Posted by Dark Helmet View Post

No having any luck at the Bottlehead forum so I'll ask here.  I just installed the Goldpoint MiniV stereo Attenuator in My Bottlehead Crack.  In the process of doing so I had to remove some components and when I went to do my voltage check I noticed that at terminal 6 and 10 it measures 40V, when it should measure 0V.

 

A response time of ~24 hours is pretty reasonable for a tech support forum, 6 hours is asking a little much.

post #1892 of 5982

Hey guys, I just encountered my first problem with the Crack. It was fine a week ago after I had finished it; played beautiful sound with no background noise. Now a prominent crackling sound with a slight buzz appears in the left channel and very faintly in the right channel. The noise stays for 15 seconds and then goes away. Sometimes it returns a minute or two later and other times it comes back a day later. The trouble shoot say this may mean a bad tube. Which tube would I need to replace? Do you guys have any other suggestions where to check for a cold solder joint or something else like that? Thanks for any help!

post #1893 of 5982
Quote:
Originally Posted by JmanOfIsrael View Post

Hey guys, I just encountered my first problem with the Crack. It was fine a week ago after I had finished it; played beautiful sound with no background noise. Now a prominent crackling sound with a slight buzz appears in the left channel and very faintly in the right channel. The noise stays for 15 seconds and then goes away. Sometimes it returns a minute or two later and other times it comes back a day later. The trouble shoot say this may mean a bad tube. Which tube would I need to replace? Do you guys have any other suggestions where to check for a cold solder joint or something else like that? Thanks for any help!

To add to this. Sometimes I find that turning the amp off for 5 minutes and then back on is all that is needed to stop this sound. Thanks again for any help!

post #1894 of 5982
Quote:
Originally Posted by Armaegis View Post

Well, that kinda tells me that something that should be grounded... isn't. 

I should be flogged for spacing on this but after further inspection I didn't have the I put jack grounded. Sorry for not replying sooner. I pretty much figured it out shortly after posting. All is well.
post #1895 of 5982
Quote:
Originally Posted by audiowize View Post

A response time of ~24 hours is pretty reasonable for a tech support forum, 6 hours is asking a little much.

I just thought it was a good idea to post elsewhere to see if I could get a response quicker. I wasn't trolling for you on this forum. Typically if I need info or answers i always get it faster here than any other forum. Sorry for the trouble.
Edited by Dark Helmet - 6/20/13 at 7:16pm
post #1896 of 5982
Quote:
Originally Posted by JmanOfIsrael View Post

To add to this. Sometimes I find that turning the amp off for 5 minutes and then back on is all that is needed to stop this sound. Thanks again for any help!

 

Any other details you can add? What is your source? And does it happen even if you try a different audio input (e.g. MP3 player, vs. computer, vs. cd player)?


Edited by liamstrain - 6/20/13 at 7:19pm
post #1897 of 5982

I haven't tried another input. I am running from a MacBook>ODAC>Bottlehead. I initially had problems with my USB port on my MacBook. I will see if this trend continues if I leave the source unplugged. I will also try switching the source.

post #1898 of 5982
How do you like the ODAC with the Crack?
post #1899 of 5982
Quote:
Originally Posted by Dark Helmet View Post

How do you like the ODAC with the Crack?

It has been great so far! Granted, this is my first decent DAC. But virtually no background noise and wonderful instrument separation would be the two features that stand out to me the most when I use the ODAC vs. strait out of my MacBook.

post #1900 of 5982
I'm definitely considering the ODAC.
post #1901 of 5982

I was between the odac and the HRT music streamer ii. They are both comparable, I just managed to find the odac on head-fi used so went with that option. I really am loving it with the crack besides the little hiccup I have recently encountered.

post #1902 of 5982

Do you have a cell phone near the cables or the ODAC?  If so move it out of the way.  It can definitely cause intermittent noises like that.  It may still be a tube, but try and rule out other things also.

post #1903 of 5982

Not a bad idea actually, I use my cellphone for internet connection. I will try moving it out of the room!

post #1904 of 5982
Quote:
Originally Posted by JmanOfIsrael View Post

Hey guys, I just encountered my first problem with the Crack. It was fine a week ago after I had finished it; played beautiful sound with no background noise. Now a prominent crackling sound with a slight buzz appears in the left channel and very faintly in the right channel. The noise stays for 15 seconds and then goes away. Sometimes it returns a minute or two later and other times it comes back a day later. The trouble shoot say this may mean a bad tube. Which tube would I need to replace? Do you guys have any other suggestions where to check for a cold solder joint or something else like that? Thanks for any help!

 

I had a similar problem. The Crack buzzed and popped when warm, only after a couple of minutes, in the left channel. It disappeared when I changed the 6080 tube (the big one). You can also try the chopstick test to look for cold solder joints : try pocking all the connections inside with a wooden stick (be careful doing this). The buzz and popping should get worse when you hit the part with a bad joint. And try pocking the tubes to see which one is bad.


Edited by ffivaz - 6/21/13 at 5:20am
post #1905 of 5982

So.. I had a couple of tubes arrive today... an E80CC & a 12BH7.  Rolled them into the Crack a few hours ago (w/ the 5998 in the output position).  Wow.  I'll keep it short for now:

 

I don't think I can go back to a 12AU7 tube.. any 12AU7, actually.

 

More later..

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