View Single Post
Old 8th Aug 2019, 12:04 pm   #50
Alistair D
Nonode
 
Alistair D's Avatar
 
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 2,008
Default Re: Telequipment D75 scope.

I was thinking about how isolate which section of the amplifier is drifting. The idea I have come up with is to use two meters. Connect one to the 2 gates of TR601, connect the other meter likewise to TR603. Monitor the voltages as the scope warms up. Both meters should drift by the same amount. Repeat this process with TR605/607 etc until you find where the two meters disagree. Hope it helps.

Al
__________________
I won't tell you how I discovered that.
Alistair D is offline