Hey guys,
I would appreciate some ideas based on your experience.
I am playing now with Rotel RSX-1058. There is no sound coming out of this receiver.
1) It powers up, there is a working communication between the main MCU and the front panel MCU as well as with the volume control & input selection ICs (I verified that they work)
2) The MCU keeps the output stage of the preamp in mute
3) The MCU keeps the DSP in reset state, therefore the sound goes through (if we forget mute=on) only in 'Bypass' mode, where the DSP is not used.
4) All the supplies seem OK
5) Both the MCU and the DSP oscillators are working fine
It's not hugely common receiver but based on your experience with perhaps some other devices - any ideas what typically goes wrong?
Thanks!
I would appreciate some ideas based on your experience.
I am playing now with Rotel RSX-1058. There is no sound coming out of this receiver.
1) It powers up, there is a working communication between the main MCU and the front panel MCU as well as with the volume control & input selection ICs (I verified that they work)
2) The MCU keeps the output stage of the preamp in mute
3) The MCU keeps the DSP in reset state, therefore the sound goes through (if we forget mute=on) only in 'Bypass' mode, where the DSP is not used.
4) All the supplies seem OK
5) Both the MCU and the DSP oscillators are working fine
It's not hugely common receiver but based on your experience with perhaps some other devices - any ideas what typically goes wrong?
Thanks!
Hi,
Check the collector voltage output of Q322,. A positive voltage will ground the outputs of Q301 and Q302.
Check the collector voltage output of Q322,. A positive voltage will ground the outputs of Q301 and Q302.
So this is exactly the case, but this condition is driven by the MCU. I do not know why the MCU keeps the output stage in mute...