Question about Audio Players & Recorders
Thank you very much for responding to my message. My background is not electronics based. However, I am very practical having spent thirty years in the Construction Industry. For your information the system worked fine after I posted the message and again today. This evening it went back in to fault mode. I noticed that it clicks several times before it switches off. Does this give you a better understanding of what the problem might be. I do have a multimeter in my tool kit but not a small soldering iron (150watts is the smallest) However, I could purchase one as they are cheap. I will await your thoughts before I do anything.
Thank you again for your kind offer of help.
Yes, this could be the solder connections on the amp and power supply. You will need to take the unit apart to take the boards out, then reflow all the solder connections that are not a shiny silver color and/or have a ring-like crack around them, or if they look a little grainy. The clicking is the relay going on and off. This could be because the power supply voltages are not constant. It may also need a couple of capacitors replaced in the power supply. If the unit was working for a day or 2 and then it stops, and then it will work again, it is most likely some bad solder connections.
As long as your soldering iron will melt the solder, it should work OK for you to do this. Just be very careful to not make any solder bridges. A solder bridge is when the solder from one pad is leaked over to another pad next to it. Always inspect the circuit board after reflowing a lot of solder connections with a magnifying glass so you have a very good view of every connection. If just one of those solder connections has even a small little string of solder that connects to a solder pad next to it, it can cause serious damage to the unit. It creates a short where there is not supposed to be one.
The information I have given you is based on over 18 years of repairing audio equipment, but that does not mean I am always right when I have not had the chance to see the unit myself. All I can do is guess and tell you the most likely causes, that means that there are other causes and sometimes those other causes are very difficult to isolate without troubleshooting it myself.
I hope this has helped, just let me know if you need more help. I may not get back to this site today, I am spending Thanksgiving with my family here at my home and may be to busy to respond back again today.
Posted on Nov 27, 2008
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Posted on Jan 02, 2017
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