12-04-2013, 07:31 PM
5Y4 tubes seem to be fairly expensive, at least compared to 5Y3 tubes. My Philco 38-3XX uses a 5Y4 tube. Someone had stuck a 5Y3 in the socket, and needless to say it won't work. I was going to jumper the socket (which is mounted in the top of the power transformer shell) so that it will work with either a 5Y3 or a 5Y4, but found that the socket had apparently been made with some of the unused contacts missing. I found this on EBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vie...OC:US:3160
Any thoughts, opinions, or caveats? It doesn't permanently alter the radio and I can buy a 5Y4 later if I feel like it, and meanwhile none of the other tubes are affected so my radio will still glow in the dark and be warm to listen (and cuddle up) to! As far as a "standby switch" (mentioned in the ad), aren't they only necessary on things like guitar amps and such?
http://cgi.ebay.com/ws/eBayISAPI.dll?Vie...OC:US:3160
Any thoughts, opinions, or caveats? It doesn't permanently alter the radio and I can buy a 5Y4 later if I feel like it, and meanwhile none of the other tubes are affected so my radio will still glow in the dark and be warm to listen (and cuddle up) to! As far as a "standby switch" (mentioned in the ad), aren't they only necessary on things like guitar amps and such?
