Hello,
New to site and looking for your feedback. I'm an electronic enthusiast by hobby. I had some training in the Navy but now I have a renewed interest. In my 70's but still playing hard, and I'm mostly interested in troubleshooting the sm power supply for my Alto TS115a 800W powered speaker. My interest is in music and people enjoying music, DJ type hobby and playing drums. So this year I built a nice e-work bench and got serious.
I left my speakers on one night but next day I was hearing what sounded like a lower frequency machine gun sound from one of the speakers. I replaced the speakers and controls from the other speaker and everything seems to point to the switch mode power supply. Troubleshooting began but I broke it (shorted a couple of components) before I had a chance to troubleshoot the "machine gun sound". With the short now fixed I'm hoping to get some suggestions.
I joined this forum to reach out to some experienced audio techs that have come across similar issues. Thanks ahead of time.
What: Older Alto self powered PA speaker. 365W + 65W switching power supply.
Symptoms: Intermittent machine gun sound, slow repetition advancing to fast repetition with no signal input and volume set at zero.
Here is a link to the video and sound.
https://drive.google.com/file/d/12U6TH6vTTvJJH4DiMPjUQKN4GxpRU7ra/view?usp=drive_link
Never sent a link to a file before hope you all can open it.
New to site and looking for your feedback. I'm an electronic enthusiast by hobby. I had some training in the Navy but now I have a renewed interest. In my 70's but still playing hard, and I'm mostly interested in troubleshooting the sm power supply for my Alto TS115a 800W powered speaker. My interest is in music and people enjoying music, DJ type hobby and playing drums. So this year I built a nice e-work bench and got serious.
I left my speakers on one night but next day I was hearing what sounded like a lower frequency machine gun sound from one of the speakers. I replaced the speakers and controls from the other speaker and everything seems to point to the switch mode power supply. Troubleshooting began but I broke it (shorted a couple of components) before I had a chance to troubleshoot the "machine gun sound". With the short now fixed I'm hoping to get some suggestions.
I joined this forum to reach out to some experienced audio techs that have come across similar issues. Thanks ahead of time.
What: Older Alto self powered PA speaker. 365W + 65W switching power supply.
Symptoms: Intermittent machine gun sound, slow repetition advancing to fast repetition with no signal input and volume set at zero.
Here is a link to the video and sound.
https://drive.google.com/file/d/12U6TH6vTTvJJH4DiMPjUQKN4GxpRU7ra/view?usp=drive_link
Never sent a link to a file before hope you all can open it.