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SENCORE CB42

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Crambone:
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.

The Radio Shop:
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.

Crambone:
Ok thank you

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