UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Looking for help please with 1964 Trio W-41 stereo valve amp

Station X · 2nd Nov 2017, 3:57 pm

Those readings are correct and indicate that the valves are working, which could only happen if their heaters were working.

I note that the pre-amp is only used for Magnetic Cartridge and Tape HD (head?) inputs.

Have you cleaned the numerous switch contacts round the input by applying Servisol?

Check the anode resistors R3, R5, R103 and R105 with a meter on ohms range.

2nd Nov 2017, 3:57 pm	#18
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Looking for help please with 1964 Trio W-41 stereo valve amp Those readings are correct and indicate that the valves are working, which could only happen if their heaters were working. I note that the pre-amp is only used for Magnetic Cartridge and Tape HD (head?) inputs. Have you cleaned the numerous switch contacts round the input by applying Servisol? Check the anode resistors R3, R5, R103 and R105 with a meter on ohms range. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.