tube

  1. M

    CRT TV repair

    I have two CRT TVs one Panisonic PV-M1323-A and a Sansui TDC2075-A My Panasonic works but has the issue as shown in the videos here and I'm guessing it's something screwy with the vhold but there's no knob or setting to adjust it so I tore it down and took images of the PCB Panasonic...
  2. Vacuum tube oscilloscope sweep generator

    Hi, can anybody help me figure out the process by which the sweep cap (which is connected between the cathode of v6-a and ground, IF I understand correctly) gets discharged in that schematic? I don't know tubes much but I think I understand why it charges (there is current flow between plate...
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