Ok thanks, I tested looking at it from the back, testing from left to right, most didn't have but a little voltage, 7=7.6...8=14.6...12=14.73...14=14.57. I can list them all if needed.
They do not look right. Notes: No need to have second speaker connected.
Pin 1: N.C. reported as: 0 Pin 2: Bootstrap 2 reported as:14.5. I need to check my speaker. Pin 3: Output 2 reported as:0.5this output pin should be at about 1/2 of the VCC.
Pin 4: VCC1 reported as:14.7 Pin 5: Output 1 reported as: 0.5this output pin should be at about 1/2 of the VCC. Pin 6: Bootstrap 1 reported as: 0.46. I need to check my speaker.
Pin 7: PWR-GND reported as: 0
Pin 8: VCC2 reported as:14.6 Pin 9: Ripple filter reported as: 7.6. I need to check my speaker.
Pin 10: NF1 (Negative Feedback 1) reported as: 0.10
Pin 11: Input 1 reported as: 0.47
Pin 12: Input 2 reported as: 0.12
Pin 13: NF2 (Negative Feedback 2) reported as: 0.10
Pin 14: Pre-Gnd 1 reported as: 0
Pin 15: Pre-Gnd 2 reported as: 0
Per your readings in post #48
Pin 2: Bootstrap 2 reported as:14.5
Pin 6: Bootstrap 1 reported as: 0.46. This one looks bad. You may want to check that cap between pin 5 and pin 6.
Pin 3: Output 2 reported as:0.5
Pin 5: Output 1 reported as: 0.5
I expect them to be like that, 0.50V, if pin 8 VCC 2 Voltage is not present when headphone is plugged in, but you have VCC2 on pin 8 of the IC.
I guess you can try new TA chip.
Can you tell which green ceramic cap relates to bootstrap one, is it the one closest to the TA chip? tried measuring the voltage, if I hit the right solder joints I didn't get much voltage from either one??
Pin 2: Bootstrap 2 resistance between 2 and 3 is 219 meter set at 2000 ohms
Pin 3: Output 2
Pin 5: Output 1 resistance between 5 and 6 is 546 meter set at 2000 ohms
Pin 6: Bootstrap 1
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