Hi all,
I have a Rotel RA-02 here. It had an issue with the selector switch lighting up all channels and no sound from any input. I managed to sort that after replacing some faulty overheated resistors in the power supply, likely caused by cold solder joints on the two 1000uF 35v caps before them.
I have the selector switch working as normal now yet only getting full sound through the left channel, the right only very faint at 12 o clock volume.
Headphones has full sound in both channels, all inputs have the same issue. I have used the preamp outputs to my Arcam Alpha 8 power amp and the issue is the same, ruling out the Rotel's power amp stage I guess.
I have no scope and have been checking voltages all over and seeing nothing odd, matching the schematics.
The faulty channels does go slightly higher when I turn the tone controls On, which I find strange. I've contact cleaned all switches and connections to no avail. All relays are clicking.
Any guidance on where to check would be much appreciated.
Service manual is here:
Rotel RA-02 - Manual - Stereo Integrated Amplifier - HiFi Engine
I have a Rotel RA-02 here. It had an issue with the selector switch lighting up all channels and no sound from any input. I managed to sort that after replacing some faulty overheated resistors in the power supply, likely caused by cold solder joints on the two 1000uF 35v caps before them.
I have the selector switch working as normal now yet only getting full sound through the left channel, the right only very faint at 12 o clock volume.
Headphones has full sound in both channels, all inputs have the same issue. I have used the preamp outputs to my Arcam Alpha 8 power amp and the issue is the same, ruling out the Rotel's power amp stage I guess.
I have no scope and have been checking voltages all over and seeing nothing odd, matching the schematics.
The faulty channels does go slightly higher when I turn the tone controls On, which I find strange. I've contact cleaned all switches and connections to no avail. All relays are clicking.
Any guidance on where to check would be much appreciated.
Service manual is here:
Rotel RA-02 - Manual - Stereo Integrated Amplifier - HiFi Engine