I just fixed up an HQ-145 of about the same vintage as the HQ-180 and
my canned electrolytics, a triple section capacitor containing the two
power supply filters and an audio capacitor failed the "smoke" test.
I recapped those three caps. I did save the can in case I ever want
to reinstall modern caps inside the can, but that seemed like an awful
lot of work when even the most ardent collectors acknowledge that
capacitor substitution should be done anyway in the interest of
safety. Since small radio parts failed even when new and parts
replacement was a normal activity (that's why there were so many
radio/TV repairment around...where have they gone?) I guess this sort
of restoration isn't quite as anal retensive as restoring Corvettes.

Jon Teske, W3JT