Mitsubishi NFL9905STTFW User Manual page 16

PROBLEM
•
The 2 very faint thin lines across the screen are normal.
Two fine horizontal
They are caused by the aperture grille stabilization
lines are visible on
filaments(Damper Wires) which are required for all
the screen.
aperture grille CRTs'.
Shadow of Damper Wires
A buzzing sound
• A brief vibration or hum sound that is heard just after power
when power on.
up is normal. This is caused by the automatic degaussing
function. This sound will be heard each time the monitor is
powered up from a cold start and each time the manual
degauss button is used.
ITEMS TO CHECK
Aperture Grille
Electron Gun
Damper Wires
- 16 -
LOCATION
• –
Shadow of
Damper Wires
Aperture Grille Type
• –