Hi all,
Normally fix TV's however this is the first amp I have worked on in the modern era....
The amp after resetting the protect, will power up until the speaker relays kick in after which it performs an immediate shutdown.
Checking the speaker terminals reveals -7.5volts on all terminals except for the Zone 2 channels.
All output transistors appear to be ok with no obvious shorts etc.
It looks like I have a floating ground somewhere however I'm just not sure where to start looking.
Any advice will be greatly appreciated.
The service manual link is https://elektrotanya.com/yamaha_rx-a.../download.html
Normally fix TV's however this is the first amp I have worked on in the modern era....
The amp after resetting the protect, will power up until the speaker relays kick in after which it performs an immediate shutdown.
Checking the speaker terminals reveals -7.5volts on all terminals except for the Zone 2 channels.
All output transistors appear to be ok with no obvious shorts etc.
It looks like I have a floating ground somewhere however I'm just not sure where to start looking.
Any advice will be greatly appreciated.
The service manual link is https://elektrotanya.com/yamaha_rx-a.../download.html
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