10-01-2008, 06:59 AM
Hi all,
I have noticed in restoring my recent Philco 90 chassis that the tuning gang has a copper braid wire soldered to the three mounting bolts, which is then soldered to ground. Obviously this was a means of providing an additional ground to the tuning gang frame. But why?
The tuning gang has three rotary wipers that have wires attached to them that are soldered to ground under the chassis. The other 90 chassis I did, did not have this braid wire soldered to the tuning gang bolts.
Has anyone ever seen this before? Is this a factory installation or did some repairman along the way decide that this was a good idea? I'm just a little curious about this. Both chassis seem to work fine without the braid. I had to remove it to install new grommets. I have not reinstalled it as of yet. I'm waiting for opinions.
Ed
I have noticed in restoring my recent Philco 90 chassis that the tuning gang has a copper braid wire soldered to the three mounting bolts, which is then soldered to ground. Obviously this was a means of providing an additional ground to the tuning gang frame. But why?
The tuning gang has three rotary wipers that have wires attached to them that are soldered to ground under the chassis. The other 90 chassis I did, did not have this braid wire soldered to the tuning gang bolts. Has anyone ever seen this before? Is this a factory installation or did some repairman along the way decide that this was a good idea? I'm just a little curious about this. Both chassis seem to work fine without the braid. I had to remove it to install new grommets. I have not reinstalled it as of yet. I'm waiting for opinions.
Ed
