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FBX Setup is OK
I just made a major capital equipment purchase, a Heathkit HV Probe for $39 including shipping. When used with my 1950 Heathkit VTVM I was finally able to setup my 6BK4 HV reg after I cleaned the 66m resistor with lacquer thinner. It was reading 24m with 50 years of crud on its body. Now the ultor is held at the desired 27KV constant at all brightness levels. Some important readings:
At ac in of 115vac, B++ is 424v, horz system current at fuse is only 172ma (same as HOT cathode), boost is 725v, focus is 5.5kv, Ultor is 27KV. After > 2 hours operation, the FBX primary and HV doughnut were barely "body temp", < 110F!
The last major effort will be the horz dynamic convergence system. The latest pics are with only vert convergence:
Last edited by Tomcomm; 02-09-2011 at 08:56 AM.
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