Re: 453 trouble
A hot chassis can also be caused by RF filter capacitors connected from each side of the line to the chassis. I would be much more suspicious of these if they exist in the 453 than of the electrostatic shield in the power transformer. If there are such caps in the 453 lift them to see if the voltage on the chassis disappears. You might want to replace them. There are special capacitors for this service which fail open so they don't connect the line directly to the chassis.toggle quoted messageShow quoted text
The voltage on the chassis will depend on the amount of capacitance and the impedance of the measuring device.
You can always generate a long argument by discussing the differences between lightening protection grounds, power line safety grounds and grounds to eliminate common impedances in AF and RF circuits.
On 8/15/2018 1:52 AM, Craig Sawyers wrote:
That would be typical if the chassis is ungrounded. Capacitance between the primary and shield (which