My STR-DE945 5.1 channel, works "fine" just a small issue that started to bother me... when i start the thing the 5 speakers have sound (also the bass), but after like 5 or 6 minutes, i hear a...
Commonly your problem is a result in bad thermal connectivity on the power transistors.
Each power transistor is coupled to a heat sink with thermal paste / thermal conductor. When they run hot, they **** more power. There is commonly a thermistor which acts as a protection from blowing out the transistors.
There is probably a transistor that is nearing the end of its life. It will work for a while (when you power up the system) but after a couple of minutes, it starts to **** power, heat up, and trigger an thermistor up stream of the transistor, and it shuts the power stage of the amp off.
This is unfortunately a problem for a technician, or you would need to be armed with a schematic to be able to work with this problem effectively.
Mar 17, 2011 |
Sony STR-DE945 Receiver