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B&K 1077B
#9

After (I believe) chasing a ghost, I have this unit working pretty good. I think the biggest problem is our high AC line voltage. I have checked everything and verified voltages. Even dug out Uncle Max's 1077 and fired it up to find exactaly the same currents and voltages and is working fine. **I noted that his 220 ohm resistor was also replaced and that he had removed the flyback, which I'm sure was for testing. I think he was chasing the same ghost.** 

So I, I installed a 300 ohm resistor to drop the B+ a little and did my final "smoke test". After 45 minutes of running, nothing overheated. I could lay my hand on the PT without any violent withdrawl, screams or other form of sudden protest. I have checked functions and waveforms and seems everything is working as it should. Nice clean sweep waveforms, all channels clear, video and bias voltage. So, I buttoned it back up and is ready for my 1st test on the Craftsmen.

The below picture is on a small analog test TV I have. The slightly stretched vertical is in the set as Uncle Max's unit was identical. 

   

I found this book to have a lot of period correct and practical "how to" information on using this instrument. 
   

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44


Messages In This Thread
B&K 1077B - by TV MAN - 11-22-2020, 05:06 PM
RE: B&K 1077B - by radiorich - 11-25-2020, 05:13 PM
RE: B&K 1077B - by Radioroslyn - 11-25-2020, 07:17 PM
RE: B&K 1077B - by TV MAN - 11-30-2020, 07:29 PM
RE: B&K 1077B - by TV MAN - 11-30-2020, 11:26 PM
RE: B&K 1077B - by TV MAN - 12-01-2020, 11:10 PM
RE: B&K 1077B - by TV MAN - 12-14-2020, 07:43 PM
RE: B&K 1077B - by Phlogiston - 12-16-2020, 04:55 PM
RE: B&K 1077B - by TV MAN - 12-19-2020, 12:23 PM



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