National HRO 500 Communications Receiver Video #3 - Localizing the Trouble

I continue investigating the radio's operation using an SDR spectrum display to identify signals within the radio. I manage to localize the trouble to one of the three IFs, or so it would seem.

[@truthreigns7]

thank you Jim

[@jrumiano]

Be careful spraying Deoxit D5 on those wafer switch contacts. The wafers can absorb that stuff and become conductive. I would recommend a contact cleaner like CRC electronic cleaner. It's a cleaner only with no oily lube. Nice radio and good luck with the restoration.

[@JimsRadioShop]

I often use WD40 but I have heard the concern with that soaking into wafers and swelling them. So, when I am concerned about that, I use Deoxit since it's made for such uses - or is it? I think the name is very misleading since nothing is getting deoxidized. You've given me an idea for the start of the next video.

[@Aquapon67]

yea, I am in Sarasota Fl. Last night was a wild ride.

[@truthreigns7]

i pray all is well with you now