Quote:
Originally Posted by vts1134
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The usual cause of video streaking, in your 630, in order of probability is:
1) Gassy tube in video, DC restorer or CRT.
2) Plate to grid coupling cap is leaky in video or CRT circuits. In a 630 there are four .05 caps doing the coupling.
3) Grid or cathode resistor in video or CRT circuit has gone high.
4) Circuit in general around the DC restorer, especially the one meg ohm resistor from cathode to plate.
5) The internal resistance and capacitance of the B&K has overloaded or detuned the tube at the injection point.
6) The B&K itself has the problem.
James.