[HOTWIRE]

HI again Folks.

Thank you Ron. I think you are on the money there re the 640 and the made in philly possibility as my 98 has an EXPORT ink stamp under the chasis I have a set of philco 98 service sheets and they look identical to the Riders 640 sheets. Thing is though that the Sheets I have are for Philco 98 series2 run no.4. Saying that Series 2 should be stamped on the back of the chasis which it is not. Also I notice that the 80 rectifier valve is in the location where the E condenser 2mf 2mf 1mf can should be and the can is where the valve should be.

Now here is my problem.

I am unsure if I have the correct service sheets because of the series2 run number 4 thing. Presumably there was a series1 and runs number (How many?)

Arran you are right on re the condensers on the left of the chasis picture. I have concluded that these two caps were a later fix to replace the condenser pot 2mf 2mf 1mf. and the two above them were maybe intended to replace the two E caps which were removed from the clamps as seen on top of the chasis. These are 8mf and 12mf There is also a replacement cap as seen in the photo which presumably was intended to replace the 1mf but it is an 8mf.

Can anyone possibly post a reasonably clear photo of the underside of a 640. If anyone has one of course.

Thank you Guys you have reignited my mission to restore this old
one. I am not very experienced at restoring these old radios so your help is welcome. I have been around the houses here and in england re the service sheets. Thats where I obtained the one I have but I think that you guys may be able to take me further with it as I have been stuck for the last few months unsure as to exactly what model run I have.

Attachment as requested Ron.

Regards.
Hotwire.