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

3pinplug · 19th Mar 2023, 5:28 pm

Hi Paula
I have checked all round ic6 and ipa’d the board and cannot find any shorts rt c, also removed and checked the values of R28,27 and 29 all within spec.
I will change out IC6 but before i do i noted the current voltages on all the pins:-
Pin 1 = 12.04
2 = 12.33
3= 0.00
4= 0.00
5= 10.31
6= 12.31
7= 0.00
8 = 12.99
9= 10.61
10= 0.00
11= 4.13
12=0.00
13=0.00
14. 12.29
Thanks for the extra investigation whatever happened in the past it does seem to have affected a lot of IC’s.

19th Mar 2023, 5:28 pm	#259
3pinplug Pentode Join Date: Jun 2016 Location: Kent, UK. Posts: 190	Re: Help needed with - Racal Dana 9081 Hi Paula I have checked all round ic6 and ipa’d the board and cannot find any shorts rt c, also removed and checked the values of R28,27 and 29 all within spec. I will change out IC6 but before i do i noted the current voltages on all the pins:- Pin 1 = 12.04 2 = 12.33 3= 0.00 4= 0.00 5= 10.31 6= 12.31 7= 0.00 8 = 12.99 9= 10.61 10= 0.00 11= 4.13 12=0.00 13=0.00 14. 12.29 Thanks for the extra investigation whatever happened in the past it does seem to have affected a lot of IC’s.