[forcemusicgroup]

Ive gotten great readings all the way up to step 4 on PCB Board 1 - TP13 does not fluctuate from -1.8v to +2.8v it remains constant while adjusting the make up gain.

The value remains constant at 2.87v

Please advise.

[JPK]

it remains constant while adjusting the make up gain.
Normal. TP13 should vary with the threshold knob, not the makeup.

[forcemusicgroup]

my mistake... the threshold. remains constant. ive emailed close detailed pictures in your email for further review

[forcemusicgroup]

[forcemusicgroup]

Stopping at Step 5 these are the results 

tp4 - 0.0058 to 0.217
tp5 - 0.0 @-15   2.51@+15

tp11 - 0.0@-15
         0.0 @+15

tp12   0.0@ -15
          0.0@+15

[JPK]

Conditions of step 4.
Check that you get the THRESHOLD command voltage on R95-left pin. It should go from -12 to +12V when moving THRESHOLD.
If OK, please report the DC volts on all the pins of U21.

[JPK]

From your photos, I can see that you have misplaced a THAT 1246 in U7. It should be a THAT1646 here.
You probably also have an issue in U11 (I cannot see the ref on the picture).
This may have destroyed the IC's. Check if they are getting hot.

[forcemusicgroup]

Yes they are getting Hot. You can smell heat if that makes sense...

[JPK]

You will need to replace them.

[forcemusicgroup]

Conditions of step 4.
Check that you get the THRESHOLD command voltage on R95-left pin. It should go from -12 to +12V when moving THRESHOLD.
If OK, please report the DC volts on all the pins of U21.

r95 pin isnt reading -12 to +12..... more like 4VAC going CCW and CW

[forcemusicgroup]

That chips have been replaced as well please advise @JDK

[JPK]

r95 pin isnt reading -12 to +12..... more like 4VAC going CCW and CW
We are looking for DC volts here. You must set your DMM to DC.

[forcemusicgroup]

ok I have it +15 gives me -11.86 vdc
@ -15 gives me +12.03vdc

[forcemusicgroup]

U21 pins from top left side down
pin 1 -.007
pin 2 -.007
pin 3 -.007
pin 4 - -16.27
pin 5 - +15.36
pin 6 - +2.884
pin 7 - 0.0
pin 8 - 0.00

[forcemusicgroup]

Please advise @jpk

[JPK]

Check the value and reflow the solder joints of R95 to R99 and U21.
If nothing works, try swapping U21 with another OPA2134 from channel 2.

[forcemusicgroup]

Checked the of the resistors. all seem to be what is required. Swapped the OPA chip and got the same result and numbers. Please advise....

[JPK]

Do do still confirm TP13 doesn't change FROM 2.9V when turning THRESHOLD ?
Check the continuity between R95-right and R96-right.
If OK, you will need to send us your unit for fixing.

[forcemusicgroup]

Tp13 does change with threshold is turn... from 1.8vdc to 2.8vdc

[forcemusicgroup]

Correction -1.8vdc to 2.8vdc

[JPK]

Valeurs normales.
Quel est le problème maintenant?

[forcemusicgroup]

English?? Plz

[forcemusicgroup]

I can't get the levels on the channels to balance... the meter does jump. 

[JPK]

English?? Plz
Sorry!

You need too go again through the voltage tests here.

[forcemusicgroup]

All voltage checks are fine at this point. Channel 2 is .5 - 1.5 db off. I've moved the trims and nothing changes.