Balanced ouput problem

[EmptyMusicBox1]

hello everyone
i have an old problem on a CLX Output it's about the Unbalaned /Balanced stage !

i don't understand where is the problem ... when i add 0,75v on the input i lost the signal on the PIN3 at the R92


And the phase is always positive

All the schematic : http://www.acsoundstudio.com/DIY/160vu/BOM/2ndREV/Information/Circuit1.jpg

can you help me please

 

[moamps]

This output is balanced but not symmetrical, IMO, so there is no output signal present at the "inverting" output.

 

[EmptyMusicBox1]

ok thans for your answer

but it's normal if i have no sound a the pin3 ?

This output is balanced but not symmetrical, IMO, so there is no output signal present at the "inverting" output.

 

[Andy Peters]

ok thans for your answer

but it's normal if i have no sound a the pin3 ?

It is normal and expected.

There is no voltage on pin 3.

But there is current there, as it is the return for the driven output on pin 2.