BK Precision CRT tester (470)

[TinCanAlley]

Originally Posted by Notimetolooz

OK. It could very well be that the monitor and CRT were made after the tester was made, so the data on that CRT was not included in the setup info.
That also includes which adapter to use, although I think you said that the adapter called for was not one that you had therefore you wanted to move a pin on the adapter.
Several CRT testers I am familiar with test cut off by starting with the emission on and G1 at zero with the G2 set and then increase the negative G1 until the emission is cut off. This one starts out with the emission cut off, with some G1 bias and increases the G2 voltage until the emission starts. Either way tests the tube, but the numbers are different. A cut off value has more to do with gray levels and contrast on a TV tube than a computer monitor tube.
Chances are that the CRT emission is good (enough) on that tube.
If you are getting no raster the problem is likely the monitor.

There is only one adapter for use with the small diameter 7 pin tubes, I verified with BK. The problem with the adapter is the G2 is connected to the test via the pin for green G2, not red G2 as required for BW and Monochrome PC CRTs. They couldn't explain why. So I pulled the wire from the plug's #10 and moved to #9 so the red G2 knob would be as expected. I could have left it as is and used the green, but I figured why have to remember years from now if I go to use it again.

Yeah, the monitor has no H generator, so the HV stays off until it gets one. I will have to wait until I can connect it to the PC as I am awaiting a new adapter.