Quote:
Originally Posted by JohnCT
Even with bad setup, a strong tube won't flare like that except for the auto-AKB twin focus models like Zenith made when the G2 was set too low.
Remember that the CRT heater voltage is sourced from the fly, so if your HV is low, your filament voltage will be low in a proportional amount. Even an otherwise strong tube will flare with low filament voltage.
With a TRMS meter, measure the filament voltage (AC) at the CRT socket to see if you're getting 6.3V. Don't use an analog meter and don't use a meter that isn't a true RMS type because your AC is at the horizontal rate, not 60hz.
If the voltage is low, your HV is also low, and that could have to do with the retrace capacitor you changed (as well as other things such as B+)
John
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Hey,
Okay, the SAMS lists the filament voltage at 22V. I'll check. Also I'm not quite sure what you mean by "B+".
As for the softness of the image, I did knock the convergence rings out of place with my arms while I was cleaning dust out of the cabinet (accidentally, of course). I haven't tried realigning them yet. The picture was much sharper before then, smearing aside.
Edit: I just checked the multimeter I have at home, and it's not TRMS, so I'm going to have to wait until I get back to work, and see if the ones we have there are.
Edit2: In regards to the misaligned convergence rings, I did position them back close to how they were, but obviously I didn't do the best job.