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

PJL · 16th Mar 2023, 10:34 am

I won't interfere again! but there are a couple of further tests you could do before replacing IC15:
1. Disconnect Sz from pin 30 of the Logic board and check pin 2 measures 0 (looking for fault on other board).
2. Operate the Tune switch TC2 and check IC15 pin 1 changes state and pin 3 follows pin 1.

16th Mar 2023, 10:34 am	#243
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Help needed with - Racal Dana 9081 I won't interfere again! but there are a couple of further tests you could do before replacing IC15: 1. Disconnect Sz from pin 30 of the Logic board and check pin 2 measures 0 (looking for fault on other board). 2. Operate the Tune switch TC2 and check IC15 pin 1 changes state and pin 3 follows pin 1.