Will do this tonight, and no the - symbol has not changed, i just double it up so it is clearer, i am doing this all by mobile phone,Pete, Can you clarify if the way of representing negative numbers is taught in schools has changed since I went to school. (Which was a long time ago.) I was taught to represent a negative number by preceding it with a single dash. So minus 5 would be -5.
You seem to use two dashes preceding the number. So you write minus five as --5. This is to save confusion in the future when I am helping younger people.
I would like you to add a few more tests to those I requested in post #474
IC3 pin 2 IC3 pin 6
IC3 pin 3 IC3 pin 5
IC3 pin 1 IC3 pin 7
Also test the following points.
IC3 pin 4
both ends of R122 (You don't need to try to identify the ends. That should be clear from the readings.)
both ends of R127 (You don't need to try to identify the ends. That should be clear from the readings.)
Les.
Pete