03-16-2018, 09:21 PM
I would be surprised if the copper braid ground straps were spot welded, copper doesn't usually weld to steel, and RCA's practice was to solder the ground straps to the chassis. To undo them you will need a large soldering iron as the chassis tends to act as a heat sink, something like an old Amercan Beauty at 100 Watts or more, unless you are good with a propane torch.
Regards
Arran
Regards
Arran