I've got a Onkyo TX-SR705 receiver and there is no sound output to any of the speakers even after trying all the inputs. I have already done several resets to the unit by holding the DVD + Standby buttons with no success.
This leads me to believe the output transistors are shot and they are on the main board which is on the bottom. I'm a little confused to which one are the output transistors. There is a large heatsink that towards the front of the receive (by the display) which I circled in red and another set on a smaller heatsink towards the rear of the receiver (circled in blue)
Honestly, I really don't know what I'm doing. I tested the transistors on the large heatsink using the diode test function, and I believe some of them are shorted because they are showing voltage both ways at the Collector and Emitter but the tests were done in circuit. I think I need to remove them to test them but I'm not really sure.
Any help would be appreciated. Thanks
This leads me to believe the output transistors are shot and they are on the main board which is on the bottom. I'm a little confused to which one are the output transistors. There is a large heatsink that towards the front of the receive (by the display) which I circled in red and another set on a smaller heatsink towards the rear of the receiver (circled in blue)
Honestly, I really don't know what I'm doing. I tested the transistors on the large heatsink using the diode test function, and I believe some of them are shorted because they are showing voltage both ways at the Collector and Emitter but the tests were done in circuit. I think I need to remove them to test them but I'm not really sure.
Any help would be appreciated. Thanks
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