I have a 20 inch Toshiba tube tv that is about 13 years old. Lately, the tv has been making loud popping noises with white lines in the picture. Is this a cable box problem or the actual tv? Thanks!

The tv - there are discharges in the tube, the tv is dying.

If sparking inside the neck of the tube, there are chances of picture tube fault.

( More than 30,000Volts DC in micro ampere)

If sparking is observed near the EHT red cable black cup, switch off TV. Remove cable Wait for few hours.

Remove the suction cup, and the clipped "U shaped lock type pin by pushing side ways and tilting.

Clean the connecting area with clean cloth bit, moisted in ISOPROPYLE Alchohol thoroughly on that small area.

Repeat if needed. After drying reconnect & see to it that rubber cap hugs the picture tube tightly. This is a vaccum type rubber cap cup. This area shoud be air-tight.

Be cautious while trying at this picture tube connection. remove all wire connections and attempt.

If problem repeats,
Refer to a schematic diagarm for spark arresting components. Generally mounted on the picture tube pin base PCB on the neck.




Switch on TV. No sparks observed in this place, picture should be visible clean.