#56 B&K 2040 Signal generator PLL issue

[Radio Tech]

In this video we troubleshoot a very fine piece of vintage CB test gear. Inside the unit we find that the 3 74161 program divider chip failed in a cascade format. We also find that IC307 took out a resistor. After replacing the failed components we getthe unit back up and running.

 

[Robb]

Bummer that the schematic wasn't correct.
But you still nailed it just the same.
Cool stuff!

Wass the voltage feed stable to the ICs?

 

[ajohn3533]

COOL STUFF !!!

 

[Radio Tech]

Bummer that the schematic wasn't correct.
But you still nailed it just the same.
Cool stuff!

Wass the voltage feed stable to the ICs?

Thanks.
Yes voltage was pretty solid.
I had to cut one part out due to noise from a piece of test gear I could not hear. But the camera sure did. That was the alignment part. Which was why the unit was splattering 5 channels wide.

 

[Radio Tech]

COOL STUFF !!!

Thanks

 

[Old_Crow]

You do nice work in your videos, thanks for the education keep it up.

 

[Radio Tech]

You do nice work in your videos, thanks for the education keep it up.

Thank you, It is all about helping the fellow hobbyist out.