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

Sideband · 7th Aug 2018, 11:00 pm

Pin 3 (cathode) could be a bit low....my experience with these is that the cathode should be between 9 and 12V. Not a lot to cause this. The screen grid seems about right but I thought the anode should be higher. I wonder if it is coming back to the output transformer? Have you got something you can try in there?

I presume the screen grid is fed from the smoothed HT and the anode is fed from the reservoir. The HT smoothing resistor is around 10-15K?

7th Aug 2018, 11:00 pm	#17
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,572	Re: Dansette Major Deluxe - too quiet Pin 3 (cathode) could be a bit low....my experience with these is that the cathode should be between 9 and 12V. Not a lot to cause this. The screen grid seems about right but I thought the anode should be higher. I wonder if it is coming back to the output transformer? Have you got something you can try in there? I presume the screen grid is fed from the smoothed HT and the anode is fed from the reservoir. The HT smoothing resistor is around 10-15K? __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....