9825A Initial checks

Power supply check

Checking the voltages on the PSU:

Voltage

Measured

Requirements

Voltage

Measured

Requirements

+12V

11.875V

11.95 to 12.05

+5V

5.03V

4.9 to 5.15

+7V

7.038V

6.9 to 7.1

-12V

-12.10

-12.5 to -11.5

-5V

-5.01

-5.2 to -4.8

The 12V is very slightly under spec, but I will leave it for now.

The PSU seems to be OK, but I’ll wait until I have the parts for a crowbar circuit to prevent repeating CuriousMarc’s adventures.