Re: Another Quad FM4 problem
OK I've connected the battery neg terminal to the battery pos terminal via a 1R resistor as the specs for the original battery is 0.8R. This has brought REF L down to around 6V, (the specs are 2V for REF L and 8.2V for ref H - 6.2V difference across D24 -6.2V zener).
I'm not sure how to test the zener is in spec, and I'm considering removing the diode and measuring the voltage on the pads. Although I'm not sure what the results will tell me without correct references to go by.
|