Looking thru the SMs for this and others like the 820, 720, etc - the schemes show the bias trimpots 'NM' with no values, and the 'idle adjustment' page simply says readings should be 1-21mv, with no way of adjusting it . Plus the trimpots are missing in the BM. Am I correct - bias adjustment has been eliminated - likely because of past heat issues?
If so, could I 'mount' say a 10k trimpot to 'pull' the 1.5k resistors either side a bit to regain adjustment and balance?
