170dc resistor value

[lebrun53]

I have a Marantz 170dc on the bench with two dead amps.
The service manual schematic shows R728 and R729 as 47 ohms
The parts list calls for 150 ohms in those locations.
As both amps have been worked on previously, I can't be sure what was originally there.
Can anyone tell me which value is correct?

thanks in advance,
Larry