T42 monitor blanks out

[kounterpoint]

My 2 year old T42 suddenly has a wonky monitor. The monitor will go black at random intervals from 2 seconds to 10 minutes. Several passes on Fn-F7 or hibernating the system will cause the monitor to resume. Subjectively, the display seems more grainy than in the past. I've checked all my settings and haven't found a problem there. Any idea what gives?

[cmarti]

Did you try to connect an external monitor?

Your lcd is sxga or xga?

[Kyocera]

I found this last night googling for a post in another forum

You may try the search function search here also



1 Those with LCD's failures (white screen or red screen) Example:- Dell 8100 backlight if red will cause the inverter to go into self protect-switching itself off.
2 Intermittent and completely dead component failures, Could be the flex data cable
3 Liquid spillage = blurred screen with whitish blurred blotches.
4 Dim or Faint LCD,s (backlight out) or Red or orange display tint, will need backlight replacement, will refit LCD panel with NEW backlight in your LCD (extremely delicate operation) we found lamps (CCFL) cracked form heat or shattered form shock or Hiss from open circuit solder joints.
5 Transistor open & short circuits, burnt out inverter HV transformers or unraveled flex data connector or cables. SEE <-
6 Blank screen = Bad bulb CCFL (red screen) = cathodes brown = Lamp burnt.
7 Faulty display = dry solder joints or static damage to I.C.
8 No Light= Bad inverter N MOSFET or faulty oscillator or Burnt out secondary winding.
9 Missing individual lines on a display driver = pressure applied to edges of LCD normally better to replace A.C.Film is lose
10 Blank display. Missing a block of lines, or a bar. Normally better to replace bad flex circuit on substrate

[kounterpoint]

The external monitor works fine. I think I've got either a back light or inverter issue. Any ideas on how to distinguish between the two?

[ryan42]

Go into your power profiles and make sure the option to reduce the screen refresh rate is not selected. My T43p does that whenever the option is selected regardless of idle time.