[electroking]

Hello everyone,

Reading all these contributions, and looking back at the schematic I posted
a few days ago, I remembered something. This TV was purchased by my
parents in 1961, when I was less than a year old. As a child I would
sometimes play with the controls, and I found that if I set the brightness
to the max, the spot would not be killed when the TV was turned off, which
may explain the presence of the small burn. If you take a look
at the schematic, you see that when brightness is set high, the wiper
of the control is grounded, so that the positive bias applied by S401 has
no chance of reaching the CRT cathode. So this circuit design was far
from perfect...

Despite what I mentioned above, I was not too hard on this set, nor was
the rest of my family, as it has survived to this day. I used to run it a
few tens of hours every year but the last time I tried (last year), it was
dead except for the pilot light, pointing the way to a busted LV rectifier
(5V3 tube). I should start a serious restoration effort this year.