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

TimMills · 2nd Nov 2017, 3:46 pm

Thanks again.

The voltages I'm measuring on the anode pins 1 and 6 of v1 is 98v pin 1 and 66v pin 6

...and on v2 95v pin 1 and 68v on pin 6

This is with no audio input signal.

I've also sat in a darkened room with it now and there is definitely no glow from all 5 ECC83s BUT I'm pretty sure they are working... all the tone controls work and if I put low/mid vol iphone headphone feed into the phono preamp sockets it will process the current. It will start to distort at v1 & v2 if I go above 6/10 volume. I did this for a very quick test to see if someone had bypassed preamp to get an extra line input in the past.

2nd Nov 2017, 3:46 pm	#17
TimMills Retired Dormant Member Join Date: Nov 2017 Location: Norwich, Norfolk, UK. Posts: 46	Re: looking for help please with 1964 Trio W-41 stereo valve amp Thanks again. The voltages I'm measuring on the anode pins 1 and 6 of v1 is 98v pin 1 and 66v pin 6 ...and on v2 95v pin 1 and 68v on pin 6 This is with no audio input signal. I've also sat in a darkened room with it now and there is definitely no glow from all 5 ECC83s BUT I'm pretty sure they are working... all the tone controls work and if I put low/mid vol iphone headphone feed into the phono preamp sockets it will process the current. It will start to distort at v1 & v2 if I go above 6/10 volume. I did this for a very quick test to see if someone had bypassed preamp to get an extra line input in the past.