08-28-2018, 10:43 PM
> high voltage pair only ohm at 110 when the schematic shows them at 260 ohm's.
I suspect that you are only measuring one side of the HV winding. Originally the wires connected to pins 4 and 6 of 5Y3 should give you the total resistance of the HV winding. There may be a separate wire connected to the midpoint of the HV (aka center tap or ct) or it maybe internal to the transformer. W/the transformer reinstalled and wired in measure the ac voltage from the chassis to pin 4 and then pin 6 with the 5Y3 removed. Voltage must be fairly equal within a volt or two near 340vac.
RMA wiring would have the blk as the pri, red HV/red yellow ct, yellow 5v fil, grn 6v fil and grey or brown as the 2nd 6v fil.
I suspect that you are only measuring one side of the HV winding. Originally the wires connected to pins 4 and 6 of 5Y3 should give you the total resistance of the HV winding. There may be a separate wire connected to the midpoint of the HV (aka center tap or ct) or it maybe internal to the transformer. W/the transformer reinstalled and wired in measure the ac voltage from the chassis to pin 4 and then pin 6 with the 5Y3 removed. Voltage must be fairly equal within a volt or two near 340vac.
RMA wiring would have the blk as the pri, red HV/red yellow ct, yellow 5v fil, grn 6v fil and grey or brown as the 2nd 6v fil.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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