Connect a wire jumper from pin A3 to A8.
The LED at A8 is damaged (potentially cracked in half, overheated from soldering, or reheated by solder after sitting for a few years).
Hello Paul,
I have shorted the pin a8 to ground and the voltages across terminals 1 and terminals 7 have dropped to 87V(terminal 1) 115V(terminals 7).
Below is the list of voltages I have measured again.
1. 50-100 (87V)
2. 170V (201V)
3. 0V (0V)
4. 170V (202V)
5. 50-100V (88V)
6. 0V (0V)
7. 90-115V (115V)
8. 0V (0V)
9. 90-115V (122V)
10. 0V (0V)
The voltages in brackets are the measured values in test points.
The emitter resistors are still running hot .
Can you confirm if the above voltages are fine ?
The voltages across points 2 and 4 are above the 10% deviation and I am quite worried about it.
Please let me know your inputs .
Thanks again for helping me out .