Just follow the AC in and check for it at each obvious point, if it gets to the main transformer, follow it on the secondary side to the full wave bridges, and so on.
This should be a simple fix...
tom jobe...
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On 11/16/2018 11:06 AM, Michael Wyatt via Groups.Io wrote:
I have a Tek 468 scope my son in law bought for me for fathers day last year. It has been working fine until 2 day ago when I pushed the power button and nothing happened. Both fuses are fine I have 121.5 volts on the line side of the IEC connector, the same on both sides of the fuse and J108. No voltage anywhere else. I'm not a scope guy and have never tried to repair one. I would like to know if there is a known common point of failure I should check for first. Looking at the schematic shouldn't I see some voltage on J110 with the power switch closed? Hope this makes sense. I will try to post a picture of circuit.
any thoughts are appreciated
Michael
