When loaded with a capacitor all drive goes away completely.
The trace just deflects I get 11 volts on the gate leg for the fet .
The trace just deflects I get 11 volts on the gate leg for the fet .
Does the ground for the 3525 read 0 ohms to the primary ground?
Do the source pads for the FETs read 0 ohms to the primary ground?
Do the source pads for the FETs read 0 ohms to the primary ground?
Is the 3525 new?
With A off, do you still have a waveform like in post 22?
I don't see anything near a 50% duty cycle.
With A off, do you still have a waveform like in post 22?
I don't see anything near a 50% duty cycle.
The 3525 is brand new .
Post 22 was with no capacitor.
With the capacitor installed I get no drive at all .
And pin 10 is still lifted with just power and ground hooked up the amp comes
On . But when using the scope to check drive the remote was connected to the amp
Post 22 was with no capacitor.
With the capacitor installed I get no drive at all .
And pin 10 is still lifted with just power and ground hooked up the amp comes
On . But when using the scope to check drive the remote was connected to the amp
Pin 10 is still lifted . The remote makes no difference .
Pin 1:0.00
Pin 2:6.31
Pin 3:3.50
Pin 4:3.68
Pin 5:6.08
Pin 6:5.52
Pin 7:6.09
Pin 8:6.64
Pin 9:7.56
Pin 10:1.11
Pin 11:1.24
Pin 12:0.00
Pin 13:13.03
Pin 14:7.01
Pin 15:13.04
Pin 16:6.07
Pin 1:0.00
Pin 2:6.31
Pin 3:3.50
Pin 4:3.68
Pin 5:6.08
Pin 6:5.52
Pin 7:6.09
Pin 8:6.64
Pin 9:7.56
Pin 10:1.11
Pin 11:1.24
Pin 12:0.00
Pin 13:13.03
Pin 14:7.01
Pin 15:13.04
Pin 16:6.07
That IC is defective unless something is driving DC voltage back into pin 16. Pin 16 should be 5.1v ±1%.
New ic installed with pin 10 lifted
Pin 1:0.00
Pin 2:5.10
Pin 3:0.00
Pin 4:0.26
Pin 5:2.17
Pin 6:3.52
Pin 7:2.17
Pin 8:4.82
Pin 9:5.69
Pin 10:0.17
Pin 11:5.96
Pin 12:0.00
Pin 13.13.56
Pin 14:5.88
Pin 15:13.28
Pin 16:5.10
Here is what I get on the gate pads for the fets with them loaded with a 0.1 uf cap . Scope set to 5us 5volts/div
Pin 1:0.00
Pin 2:5.10
Pin 3:0.00
Pin 4:0.26
Pin 5:2.17
Pin 6:3.52
Pin 7:2.17
Pin 8:4.82
Pin 9:5.69
Pin 10:0.17
Pin 11:5.96
Pin 12:0.00
Pin 13.13.56
Pin 14:5.88
Pin 15:13.28
Pin 16:5.10
Here is what I get on the gate pads for the fets with them loaded with a 0.1 uf cap . Scope set to 5us 5volts/div
Attachments
Last edited:
With pin 10 in circuit
Pin 1:0.00
Pin 2:5.10
Pin 3:0.00
Pin 4:0.26
Pin 5:2.16
Pin 6:3.48
Pin 7:2.16
Pin 8:0.51
Pin 9:5.73
Pin 10:4.05
Pin 11:0.00
Pin 12:0.00
Pin 13:13.77
Pin 14:0.00
Pin 15:13.77
Pin 16:5.10
And no drive signal amp won’t power up .
I noticed pin 10 goes to a resistor and the other side of that resistor goes to pin 2 of the ic
Pin 1:0.00
Pin 2:5.10
Pin 3:0.00
Pin 4:0.26
Pin 5:2.16
Pin 6:3.48
Pin 7:2.16
Pin 8:0.51
Pin 9:5.73
Pin 10:4.05
Pin 11:0.00
Pin 12:0.00
Pin 13:13.77
Pin 14:0.00
Pin 15:13.77
Pin 16:5.10
And no drive signal amp won’t power up .
I noticed pin 10 goes to a resistor and the other side of that resistor goes to pin 2 of the ic
Does the amp work perfectly with pin 10 out of the circuit, now that the IC is producing output (FETs in the circuit)?