rickfray
12-30-2013, 02:39 PM
I'm doing my final lookover on solder connections and am redoing the wirewrapping at various locations on my Predicta Holiday. On the contrast pot (VR1), I noticed, unless I labeled my wires wrong as they attach to the binding posts on the Oscillator circuit board, is that the ends seem to be flipped. Terminal 1 which connects to a 1M resistor (R2 on the Philco schematic) then connects to Lug 1 (my notes) but the schematic says it should be Lug 16. Terminal 3 connects directly to Lug 16 (my notes) instead of Lug 1 in the schematic. Did I perhaps mistake the labeling? Re-looking at where the wires come up thru the chassis, they appear to located nearest the logically closer lug (1 or 16), otherwise they have to cross-over to connect as the schematic has it. Does this matter or is it just the case that the contrast would just change in the opposite direction as expected? I haven't found anything else that doesn't match the schematic yet so want to make sure it's wired correctly before putting back together. Thanks
Rick
Rick