Recent content by jmf
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SOHA II Builders Thread
Oups, it is back on http://www.cavalliaudio.com/pages/soha-ii Thanks a lot !!! JMF- jmf
- Post #1,686
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Hi, Up... Nobody has archived the elements related to the SOHA II ? I asolutly need them for maintenance. Help ! :-) JMF- jmf
- Post #1,685
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Hello, I'm the happy owner of a SOHA II amp (kit bought at www.glassjaraudio.com). I decided last week to print and archive all information about my amp, from http://www.cavalliaudio.com. And I was too late... Disaster ! There is still a web page, but there are not anymore the schematics...- jmf
- Post #1,684
- Forum: DIY (Do-It-Yourself) Discussions
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K1000 Recable Guide
After further analysis, I may have found the issue. It sems to be a cold solder point between the PCB and the small pin to the tiny wires to the driver (left one in above picture). I first tried to resolder the different pins, and then the solder went AWAY from the pin. I dismounted the...- jmf
- Post #27
- Forum: DIY (Do-It-Yourself) Discussions
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K1000 Recable Guide
I went back to my K-1000 tonight, and tried to have a look again. My issue looks like a bad contact somewhere... but where. When I had no sound, I checked the continuity from the jack to the PCB cable solder. They appear to be OK. But no sound. Had a look to the PCB and all seemed OK...- jmf
- Post #26
- Forum: DIY (Do-It-Yourself) Discussions
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K1000 Recable Guide
Thanks a lot. This would be very useful. Kind regards, JMF- jmf
- Post #25
- Forum: DIY (Do-It-Yourself) Discussions
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K1000 Recable Guide
Hello, I have a K-1000 driver which is half working. It looks like a bad contact/solder between the driver and the cable. This tutorial would be very helpful to learn how to access to this connection, but the images (from imageshak) are not available anymore. Would you of another tuto...- jmf
- Post #23
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Hi all, It seems that I have solved my DC events, that triggered the e12 from time to time. I tried to see what happened if using only one channel. So I removed the tube of one channel at a time. I tried all permutations of channel tube removed and tube. As a conclusion: one channel at a...- jmf
- Post #1,666
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Hi, I'm puzzled as you are. Even the servos are independant and I only identified a common point at the e12 level, that I disconnected without improving the situation. On DIYaudio, I initially published on the amp forum, but the thread was moved to the headphone one. Less active but with...- jmf
- Post #1,661
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
So I consider that I failed. I explored all ideas I had without success. I disconnected one input of the e12 (common point), and it changed nothing. I also inspected solders, redone few nice ones. looked for shortcuts between tracks... All seems OK, but the issue is still here...- jmf
- Post #1,659
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
I checked and rechecked. All power supplies lines are clean up to their connection point to the right or left channel. Up to now, I was thinking that my measuring point was maybe not the last one, and that there could be issues between the measuring point and the client. It is not the...- jmf
- Post #1,658
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Sorry, I have not enough knowledge in electronics, but I'll try to understand. Could you precise your idea? Regards, Jmf- jmf
- Post #1,657
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
thanks for the advice. I will do that. Regards, JMF- jmf
- Post #1,655
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Hello, I borrowed a scope for 2 weeks, and I started to investigate yesterday evening. I can catch some events, and I' m really puzzled: Facts: - events are between -100mV and + 100mV. They don't always have the same shape/amplitude, - they are exactly the same on L and R channels, so...- jmf
- Post #1,653
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
So maybe have a look to solders, and try to spot a cold/faulty one ? Let's see... Regards, JMF- jmf
- Post #1,652
- Forum: DIY (Do-It-Yourself) Discussions