Rockford fosgate R 750 1D

[josesony68]

Yes Perry, a R711 terminal goes to ground.

R754 marked as 330K, and the multimeter marks 318K

 

[Perry Babin]

Is R711 within tolerance an MUCH lower in value than R754?

 

[josesony68]

I must extract it, to check it, measured directly on the motherboard, it has a much higher value than it should have (R711 is marked with a value of 10K and measured with the multimeter it gives a value of 329K)

 

[josesony68]

I extracted R711 from the motherboard, I measured it, and curiously it starts measuring 22M and ends in infinity, but how can it be? How can a resistance open like this ... without more ...?

Well, I replaced the resistor, and amplifier working properly.
Thank you very much for the help Perry and Motronix.

 

[Perry Babin]

Random failure. It's rare but happens.

 

[punch45x2]

I know it's 2 years later but. It is not random. Same issue here. Thanks guys