UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Thorn TX90

MALC SCOTT · 8th Aug 2006, 8:35 pm

Hello, the fault that you have described is almost certain to be c189, c191 both 22mfd.
Also make sure that the HT volts can be varied with the HT pot RV224.
If it has little effect, replace tr107 bd839. C125 68n, c130 2.2mfd, c197 100nf.
C124 2n7 also gives problems with this fault.
I have serviced hundreds of these sets over the years and many still continue to give good service.

8th Aug 2006, 8:35 pm	#7
MALC SCOTT Octode Join Date: Aug 2006 Location: Willington, County Durham, UK. Posts: 1,499	Re: Thorn TX90 - line timebase problem Hello, the fault that you have described is almost certain to be c189, c191 both 22mfd. Also make sure that the HT volts can be varied with the HT pot RV224. If it has little effect, replace tr107 bd839. C125 68n, c130 2.2mfd, c197 100nf. C124 2n7 also gives problems with this fault. I have serviced hundreds of these sets over the years and many still continue to give good service.