Author Topic: B&K 2040 thread  (Read 2585 times)

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Offline The Radio Shop

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B&K 2040 thread
« on: July 01, 2013, 10:14:04 AM »
I picked up another B&K 2040 a whilke back I need to get going.
Last time I tested this unit it produced a wide signal on the output and no matter where you set the channel display out it was the same.  However the 455kc section operates as designed.

Someone added a multi 6 position switch to take this unit out of the normal band.  Most likely it has a VCO problem as the 2 10.240 oscilators are working.
I will be poosting my findings in this thread and have attached the service manual.
Buddy kc4umo

Offline hackindave

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Re: B&K 2040 thread
« Reply #1 on: August 01, 2013, 06:17:56 PM »
Any updates on this?

Offline The Radio Shop

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Re: B&K 2040 thread
« Reply #2 on: August 03, 2013, 06:39:44 AM »
I think the varactor diode is tost. At least  it is not changing the voltage to the VCO. Have to rob one from a cobra 29 and try
Buddy kc4umo

Offline hackindave

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Re: B&K 2040 thread
« Reply #3 on: August 06, 2013, 07:55:50 PM »
Keep me updated.. You know I am looking for one...