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

PJL · 9th Oct 2017, 1:54 pm

The emitter and collector voltages are reversed. This is a PNP transistor.

You should put R426 back if you think its OK now as I would not expect to see the fault condition with it lifted.

9th Oct 2017, 1:54 pm	#103
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Scopex 4D-25 Oscilloscope Repair Help The emitter and collector voltages are reversed. This is a PNP transistor. You should put R426 back if you think its OK now as I would not expect to see the fault condition with it lifted.