03-17-2012, 06:41 PM
Arran,
I would understand if those #61 and 62 smoked, things being the way you explain. This would take a lot, as the resistors are probably 2-3 watters at least, and the voltage without load, I take it, about 400V or so, and so between the two of them they will dissipate 2W, which is far from making them smoke.
But #7 smoking.....removing the field coil actually removes the power from just about anything, except from res. #22 / 21, which is hi-resistance, and DC-wise foes to one of the Det.osc. grids, so there is no DC path.
No current flows anywhere anymore.
How does that makes #7 smoke, I fail to see, unless, there is some short somewhere, or something else.
A long shot - shorts within coils and within the tuning capacitor may do it, but if this is true, then this would be a good day to go and buy a lottery ticket.
I would understand if those #61 and 62 smoked, things being the way you explain. This would take a lot, as the resistors are probably 2-3 watters at least, and the voltage without load, I take it, about 400V or so, and so between the two of them they will dissipate 2W, which is far from making them smoke.
But #7 smoking.....removing the field coil actually removes the power from just about anything, except from res. #22 / 21, which is hi-resistance, and DC-wise foes to one of the Det.osc. grids, so there is no DC path.
No current flows anywhere anymore.
How does that makes #7 smoke, I fail to see, unless, there is some short somewhere, or something else.
A long shot - shorts within coils and within the tuning capacitor may do it, but if this is true, then this would be a good day to go and buy a lottery ticket.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
