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Here's the recapped TV30 working much better. Rob, you were on the right track with the HV after all. The 1M/1W filter resistor had changed value, causing very poor regulation. HV was present and would produce a raster, but increasing beam current would start to drag the HV down as the Brighness control was turned up past 90%. With that cold solder joint that I had fixed earlier throwing the CRT's bias out of whack, it turned out that the increase in beam current from the grid going positive would cause an increasing drop across the filter resistor with a resulting sag in HV output that would ultimately blank the raster.
I'm waiting for a B&K 415 that I'll be re-calibrating for efficient alignment of 21.25 MHz IF systems and will be aligning this set with this "plug-and-play" system. For now, I'm setting it aside until the 415 gets here.
Last edited by jshorva65; 05-01-2003 at 12:15 AM.
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