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

Ted Kendall · 7th Dec 2018, 11:39 am

I'd say around Q203 is where I'd look first - if it's breaking down it will pull the 555 to the slow speed tach frequency.

7th Dec 2018, 11:39 am	#2
Ted Kendall Dekatron Join Date: Jul 2008 Location: Kington, Herefordshire, UK. Posts: 3,675	Re: A77 Speed Issue I'd say around Q203 is where I'd look first - if it's breaking down it will pull the 555 to the slow speed tach frequency.