Being pulled down. Lower than normal, and the resistors were melting the solder they sit in in minutes. So I pulled both data sheets then started testing across the opamps for resistance.
I don't understand what you meant about the 4558 and the TL072. They are generally pin for pin compatible.
After replacing the op-amp, is it still drawing excessive current (overheating the resistors)?
After replacing the op-amp, is it still drawing excessive current (overheating the resistors)?
That's what I thought as well Perry. But I read .35ohms across pins 8&4, found it when I was searching for differences.. .. ..the opamp is shorted the tl072.
Did you pull the op-amp to find it?
Reading in the board would have been reading most all of the op-amps.
For op-amps that are not 0-ohm shorted, you can freeze them and watch for the one that defrosts first when power is applied.
Reading in the board would have been reading most all of the op-amps.
For op-amps that are not 0-ohm shorted, you can freeze them and watch for the one that defrosts first when power is applied.