The Electronics Universe

Electronics Forum => Test Equipment => Topic started by: Crambone on May 11, 2019, 10:14:14 AM

Title: SENCORE CB42
Post by: Crambone on May 11, 2019, 10:14:14 AM

My CB42 frequency counter isn’t showing correct frequency, all numbers light up. I checked power to the top board and I’m seeing the 5v and 10v.
Just not sure we’re to start looking. I looked on YouTube and seen a video by The Radio Shop but it wasn’t for counter diagnosis.
Any suggestion on were to start? I did print out all the schematics he had on his site.

Title: Re: SENCORE CB42
Post by: The Radio Shop on May 25, 2019, 08:53:54 AM

Start by checking voltages and AC ripple.  These logic circuits require that the voltage is spot on and clean.
 Also change out any electrolytic capacitors.  At times I have seen the inductors on the counter board go open.
They look like little resistors.

Title: Re: SENCORE CB42
Post by: Crambone on May 25, 2019, 06:53:39 PM

Ok thank you