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

PJL · 10th Oct 2017, 9:37 pm

It's not current limited so check B C E voltages of TR683 and base of TR682. Also measure the volts either side of R681 as failure of the 1.6KV supply could cause this.

10th Oct 2017, 9:37 pm	#116
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Scopex 4D-25 Oscilloscope Repair Help It's not current limited so check B C E voltages of TR683 and base of TR682. Also measure the volts either side of R681 as failure of the 1.6KV supply could cause this.