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January 30, 2023, 09:07:26 PM

Author Topic: No sound coming from right side of Crack, no speedball  (Read 122 times)

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Offline EmiTo

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No sound coming from right side of Crack, no speedball
« on: January 23, 2023, 01:17:06 PM »
Finished building BH Crack with no speedball but i get no sound from the right channel
Resistance values:
1. 2.7 Mohm
2. 2.7 Mohm
3. 0.2 ohm
4. 2.7 Mohm
5. 2.9 Mohm
6. 0.2 ohm
7. 2.97 kohm
8. 0.1 ohm
9. 2.94 kohm
10. 0.2 ohm
12. 0.1 ohm
13. 2.65 Mohm
14. 0.1 ohm
20. 0.2 ohm
22. 0.2 ohm
RCA ground 0.2 ohm
black RCA 104.3 kohm
red RCA 123.9 kohm
B3 2.94 kohm
B6 2.99 kohm
Voltage:
1. 80.9 V
2. 190.6 V
3. 0.4 mV
4. 190.3 V
5. 58.1 V
6. 0.6 mV
7. 115.8 V
8. 0.9 mV
9. 99.7 V
10. 0.6 mV

Offline Paul Birkeland

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Re: No sound coming from right side of Crack, no speedball
« Reply #1 on: January 23, 2023, 01:21:02 PM »
I would be interested in seeing some more photos of the headphone jack wiring. 

Your DC voltages are where they are supposed to be, so this is most likely an issue with the wiring from the input jacks to the 9 pin socket, or possibly from the rear 5 lug terminal strip to the HP jack.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline EmiTo

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Re: No sound coming from right side of Crack, no speedball
« Reply #2 on: January 23, 2023, 01:26:46 PM »
No problem

Offline Paul Birkeland

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Re: No sound coming from right side of Crack, no speedball
« Reply #3 on: January 23, 2023, 03:01:24 PM »
One of the black wires on that headphone jack isn't captured by solder.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline EmiTo

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Re: No sound coming from right side of Crack, no speedball
« Reply #4 on: January 23, 2023, 03:53:45 PM »
One of the black wires on that headphone jack isn't captured by solder.
Nice, that solved my channel issue, although now listening carefully I hear some noise, like interference on a radio, could this be cause by a cable with an insulation burned off?
Maybe some of these two could be causing the problem

Offline Paul Birkeland

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Re: No sound coming from right side of Crack, no speedball
« Reply #5 on: January 23, 2023, 04:29:21 PM »
A6 is not soldered.

What are you using to feed the Crack?  If it's a PC or USB powered DAC, there's a modification stickied for that on the Crack part of the forum.  If you're not using a source that presents those issues, it could just be proximity to a WiFi or cellular device, and a few extra feet of space would make a big difference.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline EmiTo

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Re: No sound coming from right side of Crack, no speedball
« Reply #6 on: January 23, 2023, 05:42:52 PM »
yeah, that was it, i had both the modem and my desktop next to the amp, i put it a bit apart from it and it's better

Offline EmiTo

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Re: No sound coming from right side of Crack, no speedball
« Reply #7 on: January 24, 2023, 04:41:04 PM »
Hi, sorry to keep bothering but i did some other stuff i found in the forum. First a crackling popping noise started coming from the left channel (volume dependant) so i reheated every joint but it didn't solve it completely and after that i used a wooden stick to see any terminal from were the problem might come from and tried re soldering those but now terminals 6 and 10 have a capacitor like resistance instead of 0, do you know any place were solder may be misplaced that could cause that?

Offline Paul Birkeland

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Re: No sound coming from right side of Crack, no speedball
« Reply #8 on: January 25, 2023, 05:22:26 AM »
If you have no headphones plugged into the Crack, terminals 6 and 10 will show 0 ohms.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man