This is one instance where a 120v incandescent lamp may help. Connect it on place of the resistor and then, if the problem is intermittent, you may see the lamp blink when the problem makes/breaks the fault.
I had a shorted optocoupler.
So I’m gonna try a new 22 ohm resistor in the location and see if I can get the relays to engage
So I’m gonna try a new 22 ohm resistor in the location and see if I can get the relays to engage
Now I have a problem with the amp staying in protection mode .
Here is what I get on the 3525
Pin 1:0.12
Pin 2:12.79
Pin 3:0.32
Pin 4:0.76
Pin 5:8.06
Pin 6:7.50
Pin 7:8.01
Pin 8:8.13
Pin 9:0.09
Pin 10:0.31
Pin 11:0.00
Pin 12:0.00
Pin 13:13.82
Pin 14:0.00
Pin 15:13.82
Pin 16:8.77
Here is what I get on the 393
Pin 1:0.00
Pin 2:2.88
Pin 3:2.33
Pin 4:0.00
Pin 5:0.00
Pin 6:4.96
Pin 7:0.00
Pin 8:13.86
And yes it’s the same amp
Here is what I get on the 3525
Pin 1:0.12
Pin 2:12.79
Pin 3:0.32
Pin 4:0.76
Pin 5:8.06
Pin 6:7.50
Pin 7:8.01
Pin 8:8.13
Pin 9:0.09
Pin 10:0.31
Pin 11:0.00
Pin 12:0.00
Pin 13:13.82
Pin 14:0.00
Pin 15:13.82
Pin 16:8.77
Here is what I get on the 393
Pin 1:0.00
Pin 2:2.88
Pin 3:2.33
Pin 4:0.00
Pin 5:0.00
Pin 6:4.96
Pin 7:0.00
Pin 8:13.86
And yes it’s the same amp
Check the output inductors if u got it in portect these amps are bad for shorting inductors. Loosely wound
Pin 16 is too high. Either the IC is defective or something is driving voltage back into the IC.
Five band resistors with a fourth band of gold or silver form an exception, and are used on specialized and older resistors. The first two bands represent the significant digits, the 3th the multiply factor, the 4th the tolerance and the 5th the temperature coefficient (ppm/K). Resistor color code | Resistor standards and codes | Resistor Guide
I was stumped on one of these too. So it is a 22ohm
I was stumped on one of these too. So it is a 22ohm
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