Used another multimeter.
pin 1,2,3 are all at 6v (bridged or not)
supply voltages at correct pin 11 (-11v) and pin 4 (+11)
using the fusion fp9001
and below for 5470
bridging pin 13&14 also triggers pin 7 of the hip4080
pin 1,2,3 are all at 6v (bridged or not)
supply voltages at correct pin 11 (-11v) and pin 4 (+11)
using the fusion fp9001
and below for 5470
bridging pin 13&14 also triggers pin 7 of the hip4080
Pin 11 is ground on that diagram. Are you sure that it's negative 11v on your IC?
"bridging pin 13&14 also triggers pin 7 of the hip4080"
^^^ Explain ^^^
"bridging pin 13&14 also triggers pin 7 of the hip4080"
^^^ Explain ^^^
Apologies, you are correct it is ground.
According to the diagram it feeds into the op-amp that drives pin 7 of the HIP4080...
According to the diagram it feeds into the op-amp that drives pin 7 of the HIP4080...
How is the HA17358 being used in this amp (what is it on the diagram)?
From the RCA inputs, which op-amp outputs have signal?
From the RCA inputs, which op-amp outputs have signal?
I assume the HA17358 is the NE5532P U6b
there is no audio signals on HA17358
also noted there is no -12v on pin 4 as per the diagram.
audio signal is at the TL084cn
there is no audio signals on HA17358
also noted there is no -12v on pin 4 as per the diagram.
audio signal is at the TL084cn
doesn't seem to be a break, there is connectivity to PIN4 at C415 & C417
i pulled those caps and they test ok
PIN4 of the HA17358 & CD4013 are grounded
i pulled those caps and they test ok
PIN4 of the HA17358 & CD4013 are grounded
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Re-check the voltage on pin 4.
Voltage on pin 4 of the other 5532s?
Could the connection be intermittent?
Voltage on pin 4 of the other 5532s?
Could the connection be intermittent?
I misunderstood what you wrote.
Follow the signal through the various op-amp outputs between the RCA jacks and pin 5 of U6. Where do you have signal and where is it lost?
Have you operated the crossover switch repeatedly through its entire range to see if it possibly has a bad connection?
Follow the signal through the various op-amp outputs between the RCA jacks and pin 5 of U6. Where do you have signal and where is it lost?
Have you operated the crossover switch repeatedly through its entire range to see if it possibly has a bad connection?
There is no crossover switch on this amplifier.
I traced the signal from RCA to the TL084, then fail to trace where it integrates into the HA17358 circuit.
I traced the signal from RCA to the TL084, then fail to trace where it integrates into the HA17358 circuit.
What's the DCV on all terminals of the 17358?
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Hi Perry, found a short between PIN4 & PIN6 on the HA17358, ordered a replacement.
Will a 4558 work?
will post voltages once replaced
Will a 4558 work?
will post voltages once replaced
hi,
DCV on all terminals of the 17358?
Pin 1: 10.5v
Pin 2: 6v
Pin 3: 10v
Pin 4: 0v
Pin 5: 0v
Pin 6: 0v
Pin 7: 0.9v
Pin 8: 11.7v
DCV on all terminals of the 17358?
Pin 1: 10.5v
Pin 2: 6v
Pin 3: 10v
Pin 4: 0v
Pin 5: 0v
Pin 6: 0v
Pin 7: 0.9v
Pin 8: 11.7v