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Do you have any other CRTs you can test with the CR70 ?
I also recommend you run through the calibration instructions to make sure it's working properly.
Set the CR70 controls to the following, F1 to 1, F2 to 2, K to 3, G1 to 4, G2 to 5 ,gun select to R/B&W ,CRT select to Video, function to Remove G1 short.
Hook a DC Voltmeter ground lead to G1 lead of universal adapter and the positive lead of the DVM to the K lead of universal adapter.
When the rejuv button is pressed the DVM should read greater then 350 volts DC.
Set the function switch to the rejuv position and re-press the rejuv button and check again for greater than 350 volts DC.
Set function to Auto Restore and set external DVM to DC current. Press the rejuv button and the CR70 should cycle three times. When on the current should read between 80 and 120 mA.
Set function switch to manual 1 restore.Press the rejuv button and the external DVM should read between 80 and 120 mA with no cycling.
Set function switch to manual 2 restore. Press the rejuv button and the external DVM should read greater than 150 mA
Set function switch to cutoff. Set external DVM to DC volts. You should be able to read the BIAS voltages.
Move the positive lead of the DVM to the G2 lead of the universal adapter. When the cutoff control is adjusted look for a voltage swing of 20 to 400 Volts DC.
Move the DVM ground lead to the F1 lead of the universal adapter and the positive lead of the DVM to the F2 lead . You should be able to read the filament voltage on the DVM. It will be dependent upon where the filament volts settings are set to.
Note: if your CR70 has two power transformers on the bottom panel the filament voltages will be AC volts.
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