06-24-2017, 10:49 AM
New to forum ,I am, but not new to radio repairs.I got a model 52 for $25 since the cabinet is very nice. Easy redo, correct? No, I have hit the wall and am NOT finding why.The I F tube, type 35, has 300V on the cathode.Should be around 3 volts.On schematic it is connected on the volume control side of a 51K resistor.The other side of the resistor goes to B+. The volume pot is fine (5.2K) and the small resistor (34) is new and 220 ohms.
The I F tube is fine, no shorts on Hickok, all tubes are good. B+ is a little high, but that's not the problem.
The only thing I can think of is when I restuffed the bakelite cap. (34) I got the connections wrong way around and the 220 ohm part of 34 is not connected to the cathode lead. Does that make sense? Is there anything else that can raise the cathode to high voltage that that anyone can suggest? Grid, plate are close to proper Voltage.
Thanks,
Pear
pearsrepairs@hotmail.com
web:pearsrepairs.com
P.S, Ron R., I read all the Philco history sections, nicely done, very good forum also.
The I F tube is fine, no shorts on Hickok, all tubes are good. B+ is a little high, but that's not the problem.
The only thing I can think of is when I restuffed the bakelite cap. (34) I got the connections wrong way around and the 220 ohm part of 34 is not connected to the cathode lead. Does that make sense? Is there anything else that can raise the cathode to high voltage that that anyone can suggest? Grid, plate are close to proper Voltage.
Thanks,
Pear
pearsrepairs@hotmail.com
web:pearsrepairs.com
P.S, Ron R., I read all the Philco history sections, nicely done, very good forum also.
