NAD C326BEE ISC adjustment

[bluefish]

Hi Everybody,
Have just recapped a Nad C326BEE , only ones with high ESR and replaced some components as advised in the service manual.
I have set the idle current which is stable but I am confused to the setting up of the ISC adjustment. everything is set up as per the text below but can't seem to get anywhere near.
please can anybody help as probably missing something stupid
cheers Vincent

B. ISC adjustment

1. Turn VR304 fully anti-clockwise,
2. Use 500mV, 1kHz sine wave, CD input, 4 ohm loading to both channels
3. Increase the output power of both channels to 8V
4. Slowly rotate VR304 clockwise until the voltage at TP10 is the same as TP11
5. Verify the output at 20kHz 8 ohm loading to both channels are larger than 21V, if not, repeat step 1-4 again
   

 

[Heinrich Lubbe]

I have the same issue, it gets very warm on the heatsink with 4 ohm load and 8v rms output. Can't balance the voltage of Tp10 and Tp11 as Tp11 keeps jumping between 5.6 and 7.3 volt. When changing to 8 ohm load I get no 21v anywhere. Is there anyone that had success with this?