Re: Yet another 'replacing carbon resistors with metal film' question....
Personally I would *only* replace CC resistors that were causing out of specification behaviour. If e.g. all resistors in a potential divider have drifted high by the same %age (as is probable) then the divider will still have the correct voltages.toggle quoted messageShow quoted text
Or put another way if you can calibrate it successfully, then don’t replace anything at all!
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Jared Cabot via groups.io
Sent: 28 December 2020 09:47
Subject: Re: [TekScopes] Yet another 'replacing carbon resistors with metal film' question....
Yeah, I'll be recalibrating for sure, as I intend to use it to calibrate other gear.
I'll test things thoroughly and might do as you say, just replace what is needed. I already tested the capacitors as perfect so they are back in place to continue being used.
I was just thinking to replace all the carbon composite resistors now as they are a known failure point and failures have already started. I just wanted to avoid having to go back in later and end up having to recalibrate etc multiple times.
It looks like Digikey stock carbon composition resistors too, so maybe I should swap like for like for those that are out of spec?