B&K 1077 TV analyzer

[electra225]

Mine is kaput. Has no vertical deflection. I tested the vertical osc/output tube, a 13GF7 and it tested stone dead. I got a new RCA replacement, it, too, tests stone dead and it works just like the original tube did. No vertical deflection. I need two things now. One, to print out the schematic for the Analyzer and see can I find out what ails it. Second, to put that dad-blasted B&K 707 tester I have in the round file, on its way to the landfill. My Jackson 648 went on the blink, it should be done the same with. I have a TV-7, but it won't test Compactrons. I am in the market for a good working, "modern" accurate tube tester. I am sick of working with junk that lies to me. That is the second time in recent memory that tube tester had lied, causing me to chase my tail. I suspect that I have lost B+ for some reason to the 13GF7A. This will make an interesting project. The good news is that I have a spare vertical output tube if I ever need one......

[electra225]

I found that I have a real factory schematic for this instrument. I've watched a Shango YouTube video where he said that the vertical deflection portion of the deflection yoke tend to go open. I disconnected the wires for the vertical deflection coil and found it to check good. Next, I checked the primary and the secondary of the vertical output transformer, which also was found to be good. Shango also made a comment that operating an Analyzer with no vertical deflection can cause an unrepairable burn on the CRT, which will leave a black streak in the middle of the display, rendering the instrument useless. The CRT on mine is fine, so I am leaving the vertical deflection coil disconnected while I run some voltage tests. I am also going to disable the horizontal deflection by removing the anode wire from the high voltage rectifier. I should be able to run some voltage tests without worrying about high voltage running amok with no vertical deflection. Wish me luck.....

[TC Chris]

Is this device a dedicated oscilloscope for TV diagnosis?

Chris Campbell

[electra225]

The B&K 1077B TV analyzer is an instrument that generates all the signals found in monochrome and color TV receivers. It can be used to replace the missing signal or signals in a TV receiver as a diagnostic tool. Sound, color bars, IF, sync, vertical and horizontal pulses and voltages. It has 13 tubes plus a CRT that emits an ultra-violet ray that is shown to a photo tube that turns the image into an electrical signal fed to the TV under test. It was an expensive gizmo that a lot of TV repair shops used to some degree back in the tube receiver days. This particular model will also work on solid state sets.

https://antiqueradio.org/BK1077BTelevisionAnalyst.htm