XLS 5000 get very hot without any audio signal applied
Posted 07 September 2013 - 08:10 PM
Posted 10 September 2013 - 09:24 AM
How hot is 'hot'? Did you measure the heat with a thermal thermometer?
If the amp is not loaded does it still heat up?
Does the amp have inputs connected when it heats up? If inputs are removed does it continue to heat up?
It may be a bias issue; It may be oscillations! I would first verify if the power supply is operating normally.
Then, is it Ch1 or Ch2 (or both!) that is causing this heating issue?
Posted 12 September 2013 - 08:37 PM
It get very hot to the touch where the heatsink is in the back of the amp in less than fifteen minutes. No, I didn't measure thet emp with a thermal thermometer as yet. The top and bottom of the amp gets hot where the output stage is. The fan is blowing out very hot air when you put your hand where the air comes out. The strange thing is no input jacks or speakers are connected to it and it gets hot. Thats why I am wondering if it's oscillations or a bias problem it has. I guess I will have to pull out the oscilloscope and multimeter soon.
Posted 13 September 2013 - 07:34 AM
Now, why would heatsinks get very hot? Perhaps because some load is applied to the output section... Verify the outputs for any visible shorts, or that you have a large offset voltage; Yep, I believe it's now time for troubleshooting 101! Good luck and patience!
Posted 13 September 2013 - 09:27 PM