soundstream tarantula tra960.4 Resistor value

[imraneesa]

hi

I want to know the resistor values for the above mentioned amplifier. R70, R71 and R66 and R67 which are attached to 15v zener diodes. pictures attached.

one reading 464ohm and other reading 4.67kohms.

same on other side also.

 

[Perry Babin]

R70/71 = 470 ohms

R66/67 = 560 ohms

 

[imraneesa]

R70/71 = 470 ohms

R66/67 = 560 ohms

I am getting -21v and 9v with these resistor values. Zener diodes are 15v rated.

R66 and R67 belongs to one side and R70 and R71 on next two channels.

 

[Perry Babin]

See attached.

 

[imraneesa]

See attached.

Thank you.

+15 volts is not stable. i removed all the opamps then i got +14.5v on R67 then started to install opamp one by one. when i installed U101 the voltage remain good. then i just plugged in RCA Channel 1 the positive voltage disappeared. when i removed RCA jack i got +14.4v that is very strange.