Troubleshooting Dead Channel-1 on old Kikusui COS5020 Oscilloscope #2

Thread Starter

MARIOX118

Joined Oct 16, 2022
1
It helps for the analog section. Thanks

This should be the signal at P6 or the ch1 output BNC (my scope has a mod to send the digital SAVE signal to that BNC instead)


P6

0.2V/DIV cal signal input both probes.

I have little access to the preamp board from the top.

How are you, I have the same thing, but everything is disconnected from the inside, could you not take more photos of it, please?

Moderator edit: new thread created from this.
 

nsaspook

Joined Aug 27, 2009
10,715
How are you, I have the same thing, but everything is disconnected from the inside, could you not take more photos of it, please?

Moderator edit: new thread created from this.
That old scope is buried in a box in a shed now. Look at the service manual on the first post of the original thread.
 
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