In my quad 405 resistor R31 seems to be getting hotter than R30 anyone point me in the right direction?
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Quiescent or when amplifying a large signal?
With a large signal, R31 might get hotter than R30 because there is more signal voltage across it. What you have is the other way around, though.
Without signal, they should dissipate the same power unless their values are not as they should be or C10 is very leaky or something oscillates. If it's C10, I would again expect R31 to be the hotter one.
I assume they have the same size and equally hot surroundings. Have they?
With a large signal, R31 might get hotter than R30 because there is more signal voltage across it. What you have is the other way around, though.
Without signal, they should dissipate the same power unless their values are not as they should be or C10 is very leaky or something oscillates. If it's C10, I would again expect R31 to be the hotter one.
I assume they have the same size and equally hot surroundings. Have they?
Wrong way round it's R31 that's getting hotter than R30 with a signal applied amp output anywhere between 7 - 50 watts, I assume this is normal then?
To understand why will the resistor get hotter than the other with a signal applied?
To understand why will the resistor get hotter than the other with a signal applied?
Yes, they should both be at least 2.5W. They are next to each other, mounted with standoffs, and equidistant from the power transistors and other hot things.