10-13-2008, 07:26 AM
Hi Manuela,
I too am amazed at the sensitivity and selectivity of these old Philco 90 sets. As you say, they are very 'powerful' sets.
As far as the dial slipage is concerned, there is a groove formed in the roller wheel. Friction is created by the spring that forces the back side of the roller wheel forward. I would check to make sure that the spring is not stuck to the shaft. Be sure the spring is applying full pressure to the roller wheel. Also, if you turn the dial to somewhere between 80 and 85, you will see a mounting screw which holds the shaft bracket to the front of the tuning gang. You could try loosening that screw and then apply a slight amount of downward pressure on the knob shaft as you retighten it. If that fails, you could try cleaning any grease off of the dial wheel and apply some rosin to it to create more friction. Rosin can be purchased at a music store, as it is used to 'rosin a bow'.
I'm sure Ron or some of the others may be able to offer some additional advice on how to solve that dial slipage problem.
Regards,
Ed
I too am amazed at the sensitivity and selectivity of these old Philco 90 sets. As you say, they are very 'powerful' sets.
As far as the dial slipage is concerned, there is a groove formed in the roller wheel. Friction is created by the spring that forces the back side of the roller wheel forward. I would check to make sure that the spring is not stuck to the shaft. Be sure the spring is applying full pressure to the roller wheel. Also, if you turn the dial to somewhere between 80 and 85, you will see a mounting screw which holds the shaft bracket to the front of the tuning gang. You could try loosening that screw and then apply a slight amount of downward pressure on the knob shaft as you retighten it. If that fails, you could try cleaning any grease off of the dial wheel and apply some rosin to it to create more friction. Rosin can be purchased at a music store, as it is used to 'rosin a bow'.
I'm sure Ron or some of the others may be able to offer some additional advice on how to solve that dial slipage problem.
Regards,
Ed
