UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

ppppenguin · 31st Mar 2010, 2:32 pm

Rather concerned about the hum with heaters only. There's nothing legitimately there to hum. Can you pin down where it's coming from? Are all the heaters alight (except EHT rec)? Not so worried about a drippy wax cap, unless it's connected to the heater chain. C67, C68 etc are probably ceramic but best to have a look.

The Bush service data is LOT better than the Trader sheet.

31st Mar 2010, 2:32 pm	#89
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Re: Tv62 Rather concerned about the hum with heaters only. There's nothing legitimately there to hum. Can you pin down where it's coming from? Are all the heaters alight (except EHT rec)? Not so worried about a drippy wax cap, unless it's connected to the heater chain. C67, C68 etc are probably ceramic but best to have a look. The Bush service data is LOT better than the Trader sheet.