Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: BeoRski on December 04, 2018, 11:09:40 PM

Title: Voltage issue on Terminal 6 and 10 [resolved]
Post by: BeoRski 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

Title: Re: Voltage issue on Terminal 6 and 10
Post by: Paul Birkeland 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. 

Title: Re: Voltage issue on Terminal 6 and 10
Post by: BeoRski on December 05, 2018, 10:23:08 PM

Hi PB,

Thanks for responding. Here's my build.



Best Regards,

-G

Title: Re: Voltage issue on Terminal 6 and 10
Post by: Paul Birkeland on December 06, 2018, 06:26:16 AM

Your headphone jack looks to be improperly wired.

Title: Re: Voltage issue on Terminal 6 and 10
Post by: Deluk 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.

Title: Re: Voltage issue on Terminal 6 and 10
Post by: BeoRski 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.

Title: Re: Voltage issue on Terminal 6 and 10
Post by: Paul Birkeland on December 07, 2018, 05:50:48 AM

Quote from: BeoRski on December 06, 2018, 10:51:23 AM

All leads have been properly tested but I might have missed something.

Yes, you missed some connections on your headphone jack. 

Title: Re: Voltage issue on Terminal 6 and 10
Post by: BeoRski on January 06, 2019, 11:44:47 PM

I rewired and used the solid wires and also reviewed everything. Still the same readings.

Title: Re: Voltage issue on Terminal 6 and 10
Post by: diynewbie 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.

Title: Re: Voltage issue on Terminal 6 and 10
Post by: Deke609 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

Title: Re: Voltage issue on Terminal 6 and 10
Post by: BeoRski on January 07, 2019, 06:11:01 AM

Quote from: Deke609 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.

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

Title: Re: Voltage issue on Terminal 6 and 10
Post by: BeoRski on January 07, 2019, 06:12:13 AM

Quote from: diynewbie 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.

Thanks! Reviewed the manual on a computer and you guys are right. I missed that one.

Title: Re: Voltage issue on Terminal 6 and 10 [resolved]
Post by: BeoRski 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