SkyRocketeer
New Member
howdy.
I have an elderly Telequipment S51B oscilloscope, that I'm given to understand was all the rage in 1970's science labs.
The little beauty still fires up, and after a few minutes to warm and some knob twiddling I get a nice green dot march across the screen as you'd expect. However, no-matter what I plug into the front of it, I can't get it to respond to an external signal (the y deflection knob works fine). A work colleague had a brief look at it a while back and suggested one of the valves on the input amp was kaput and gave me a set of schematics and a datasheet shortly before he retired (never to be seen again).
Now the 2 puzzles I face are which valve to replace, and why has he given me a datasheet for an ECC83 valve when my little scope contains only ECC88 and ECC80 valves. Can I use an 83 in place of the 88's?
The following puzzle is where to obtain whichever valve it is I need to get the scope working properly again.
Any thoughts anyone?
Cheers
G
I have an elderly Telequipment S51B oscilloscope, that I'm given to understand was all the rage in 1970's science labs.
The little beauty still fires up, and after a few minutes to warm and some knob twiddling I get a nice green dot march across the screen as you'd expect. However, no-matter what I plug into the front of it, I can't get it to respond to an external signal (the y deflection knob works fine). A work colleague had a brief look at it a while back and suggested one of the valves on the input amp was kaput and gave me a set of schematics and a datasheet shortly before he retired (never to be seen again).
Now the 2 puzzles I face are which valve to replace, and why has he given me a datasheet for an ECC83 valve when my little scope contains only ECC88 and ECC80 valves. Can I use an 83 in place of the 88's?
The following puzzle is where to obtain whichever valve it is I need to get the scope working properly again.
Any thoughts anyone?
Cheers
G