Paradise Builders

there is no C92 on the board near the op amp although schematics state that there should be one.
 

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Boards are R2.

All caps have the correct polarity, no hot components.

The positive rail draws about 156mA of current, the negative (the one having issues) about 140mA. Does This point to a problem with the power regulator?

what if i would connect the regulator from the other board to see if the amp was working? If so, the problem would hen be the regulator.
 
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I see that two different boards are marked R2, however somewhere I read
that the difference between R2 and R3 is marginal.

You have to find out why the neg rail shuts down (I suspect your 140 mA
is with the reduced voltage?). Please try to be as precise as possible, the
current is useless without knowing the voltage. I advised checking with a
resistive load, this is easily done.

Generally current should be about the same in both branches. If not there is
an unexpected path to ground.

I want to take the opportunity to appeal to the inventors and designers of
(all) circuits called Paradise Phono :

Reliable links to valid schematics, bill of material, board layout and build
instructions should finally be provided and good pictures added. It is always
possible to edit the first post of any thread for this purpose. As is, the
distributed documentation of this project is a discouraging mess and the
schematics are ugly.
 
re. the photo in #4461, you need something in the Neumann position. Most people just use a wire link. Without this the riaa correction will be way off (it also provides a gnd ref. for the 11nF caps).
Not sure that is the problem, though. I’m with @as_audio — your amplifier board is drawing more current on the -ve side than the PS can supply at required voltage, and this is highly likely due to a stuffing error of some sort
 
re. the photo in #4461, you need something in the Neumann position. Most people just use a wire link. Without this the riaa correction will be way off (it also provides a gnd ref. for the 11nF caps).
Not sure that is the problem, though. I’m with @as_audio — your amplifier board is drawing more current on the -ve side than the PS can supply at required voltage, and this is highly likely due to a stuffing error of some sort
Soldered a wire link into the Neumann position. No changes.
Will again check resistors and the rest is there are any stuffing errors.