Yes both probes were on the spaeker terminals.
There is a HIP4082 In this amp Is it anything like the HIP4080's That need to be replaced when the outputs fail?
There is a HIP4082 In this amp Is it anything like the HIP4080's That need to be replaced when the outputs fail?
It's very similar. If it was driving the output FETs like the 4080, it has likely failed.
Can you tell what the 4427 is driving?
Can you tell what the 4427 is driving?
the HIP4082 pins 6 and 8 connect to leg 3 of the outputs and pin 15 connect's to the middle leg of the outputs
I have to do somemore checking to see what the 4427 drives
So does the 4082 appear to be driving the outputs?
I have to do somemore checking to see what the 4427 drives
So does the 4082 appear to be driving the outputs?
Look at the block diagram for the 4082. It shows the connections (minus resistors and various other components).
http://www.intersil.com/data/fn/fn3676.pdf
http://www.intersil.com/data/fn/fn3676.pdf
Back to this amp again I put in a new HIP4082 and TC4427 and new outputs.
Amp has no output and when i measure for dc on the outputs my meter jumps up and down like 1.81 volts then climbs to 12 volts then drops to 4 volts and so on.
Any ideas?
Amp has no output and when i measure for dc on the outputs my meter jumps up and down like 1.81 volts then climbs to 12 volts then drops to 4 volts and so on.
Any ideas?
The amp will have ~30v DC on both the positive and negative speaker terminals. What is the DC voltage with the black probe on the negative speaker terminal and the red probe on the positive speaker terminal?
With the black probe on the outputs negative terminal and red on otputs positive terminal. I get the cycling thing like i described.
They should be nearly identical. Is one speaker terminal (positive or negative) remaining at or near ground (black probe on amp ground) while the other is going significantly higher?
Both negative terminals are at 8.24 volts . Both positive terminals jump all over the place. This is with no signal hooked up.
Is it producing a constant rail voltage?
Is there any oscillation on any of the output transistors?
Is there any oscillation on any of the output transistors?
Can you post some photos of the amp. I need to see more detail of the area around the driver ICs.
Does the small board unplug from the main board?
Does the small board unplug from the main board?
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