WG 25" K7000

[b3dr0ck]

I'm working on a monitor:
WG 25" K7000

I just put it together and plugged it up.  Turned it on, and nothing.  It appears the tube is getting no power.  I've got 128VAC at the plug, and then I tested the voltage at the back side of the fuse.  I've got 128VAC on the back side of the fuse.

So - what should I look at next?  The Flyback, HOT?  Suggestions?

[Ken Layton]

Get your high voltage probe out and watch the meter when you first power it up. Does the needle climb quickly to 30,000 volts and shut down to zero? If it does the B+ regulator is shot.

If the high voltage is low, say at about 7,000 to 9,000 volts, the flyback could be bad.

If the high voltage is never present, then check the 2 amp slo-blo fuse to see if it's blown.

The above assumes you have already recapped the monitor.

If you have NOT recapped it, then do so first.