Ok, this may be a trivial question and wonder if others are have the same problem
Lately when ever I turn the power on in the pre-amp, input voltage resistors R16 & R17 (both 22.1 ohms 1/4w each) blow up and smoke away - sometimes leaving a black stain on the pcb.
Now I believe the problem is caused by running higher voltages to the main board - roughly around 70 VDC instead of the 60VDC in the schematic (just had to be different by running higher voltage for lower distortion).
Will have to replace with higher wattage resistors say 1 watters? Or should I go with 3 watters?
Lately when ever I turn the power on in the pre-amp, input voltage resistors R16 & R17 (both 22.1 ohms 1/4w each) blow up and smoke away - sometimes leaving a black stain on the pcb.
Now I believe the problem is caused by running higher voltages to the main board - roughly around 70 VDC instead of the 60VDC in the schematic (just had to be different by running higher voltage for lower distortion).
Will have to replace with higher wattage resistors say 1 watters? Or should I go with 3 watters?