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May 21, 2019, 11:57:29 am

Author Topic: Voltage issue on Terminal 6 and 10 [resolved]  (Read 419 times)

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Offline BeoRski

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Voltage issue on Terminal 6 and 10 [resolved]
« on: December 04, 2018, 11:09:40 pm »
Hello,

Just finished assembling a Crack kit and everything checks out good except for Terminals 6 and 10 which both read ˜100 Volts. Any ideas?



Best Regards

-G
« Last Edit: January 07, 2019, 07:54:36 am by Paul Birkeland »

Offline Paul Birkeland

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Re: Voltage issue on Terminal 6 and 10
« Reply #1 on: December 05, 2018, 04:53:11 am »
Can you post photos of your build?  Please do not attempt to use this amplifier in its current state. 
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10
« Reply #2 on: December 05, 2018, 10:23:08 pm »
Hi PB,

Thanks for responding. Here's my build.



Best Regards,

-G

Offline Paul Birkeland

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Re: Voltage issue on Terminal 6 and 10
« Reply #3 on: December 06, 2018, 06:26:16 am »
Your headphone jack looks to be improperly wired.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Deluk

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Re: Voltage issue on Terminal 6 and 10
« Reply #4 on: December 06, 2018, 07:51:07 am »
The inputs don't appear to have the solid copper wire link for the earth. The silver wire is rather confusing as there looks to be 2 wires in places where my crack only has one, especially at the headphone jack as PB says. Why did you use this wire? All my wiring is black red and white as supplied by BH. No green or silver.

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10
« Reply #5 on: December 06, 2018, 10:51:23 am »
All leads have been properly tested but I might have missed something. I will rewire the input/output section and report back how it goes. Using these wires for aesthetics but will try using the solid wires to make it less confusing to look at. Thanks for the help.

Offline Paul Birkeland

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Re: Voltage issue on Terminal 6 and 10
« Reply #6 on: December 07, 2018, 05:50:48 am »
All leads have been properly tested but I might have missed something.
Yes, you missed some connections on your headphone jack. 
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10
« Reply #7 on: January 06, 2019, 11:44:47 pm »
I rewired and used the solid wires and also reviewed everything. Still the same readings.


Offline diynewbie

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Re: Voltage issue on Terminal 6 and 10
« Reply #8 on: January 07, 2019, 01:59:25 am »
I'd check the manual for headphone jack.  In the previous version of the crack the inner connections all went to lower outside ground.  So in the new version of the wiring I would expect all of the outer lugs on the jack to be joined together.  I could be wrong, but check the manual carefully.

Offline Deke609

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Re: Voltage issue on Terminal 6 and 10
« Reply #9 on: January 07, 2019, 04:38:50 am »
Ditto. In my Crack 1.1 manual the outer lugs of the jack are wired together.  From your pics, it looks like these connections are missing. See attached pic  with circled orange line indicating where outer lugs should be wired together according to the 1.1 version of the manual.

Very nice looking build, by the way!

Derek
Derek
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Roon Intel NUC ->  Yggdrasil DAC -> BeePre (w/ BeeQuiet and JJs)  -> Stereomour IIs (2A3 and 45 Conversion - both fully upgraded)  -> Audeze LCD4

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10
« Reply #10 on: January 07, 2019, 06:11:01 am »
Ditto. In my Crack 1.1 manual the outer lugs of the jack are wired together.  From your pics, it looks like these connections are missing. See attached pic  with circled orange line indicating where outer lugs should be wired together according to the 1.1 version of the manual.
I just reviewed the manual on a computer and you are correct. Gosh I need to have my eyes checked. The illustration isn’t clear on the printout. Thank you. I will fix it tomorrow.

Quote
Very nice looking build, by the way!

Derek

Thanks! I hope it will work tomorrow so I can proceed with the Speedball. ^_^

- G

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10
« Reply #11 on: January 07, 2019, 06:12:13 am »
I'd check the manual for headphone jack.  In the previous version of the crack the inner connections all went to lower outside ground.  So in the new version of the wiring I would expect all of the outer lugs on the jack to be joined together.  I could be wrong, but check the manual carefully.
Thanks! Reviewed the manual on a computer and you guys are right. I missed that one.

Offline BeoRski

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Re: Voltage issue on Terminal 6 and 10 [resolved]
« Reply #12 on: January 07, 2019, 06:43:48 pm »
That did it... thank you for all your help!

1 - 82v
2 - 171v
3 - 0v
4 - 171v
5 - 95v

6 - 0v
7 - 107v
8 - 0v
9 - 114v
10 - 0v
« Last Edit: January 07, 2019, 07:02:37 pm by BeoRski »