UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Scopex 4D-25 Oscilloscope Repair Help

PJL · 9th Oct 2017, 11:18 am

I think you have the pins the wrong way around. Can you measure TR407 again with and without the fault.

It's of course possible it was a dry solder joint and re-soldering has fixed it!

9th Oct 2017, 11:18 am	#101
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Scopex 4D-25 Oscilloscope Repair Help I think you have the pins the wrong way around. Can you measure TR407 again with and without the fault. It's of course possible it was a dry solder joint and re-soldering has fixed it!