The Electronics Universe
Electronics Forum => Test Equipment => Topic started by: The Radio Shop on November 17, 2014, 08:16:28 PM
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This will be an upcoming repair thread on this unit
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Well there is a signal under all that noise.
Sitting at 26.919 MHZ
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10 volt to IF board
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RF/IF 5 volt regulators
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While testing the counter board (H) I found that the 10 MHz clock was not present.
I did verify that the crystal works by inserting it on my crystal tester.
Now to find what component in the osc circuit is not working.
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Closer, here I am generating a frequency on channel 20. But the display is not showing the frequency. But at least all 7 digits are running. And when changing channels what there changes on the display.
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Scope screen shot of IC211 pin 2
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bigger
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IC205 pin12
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Here is a block diagram
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try to upload a bigger image