Having problems with your Toshiba Equium 7100S PC Desktop ?

LCD monitor back light won't stay on

\015 Have a 22inch lcd monitor with a kind of failed backlight. shortly after the\015\01212V dc power transformer is plugged in to the monitor there is a gentle\015\012hum and the backlights turn on momentarily then go off. I've shown a\015\012giane flashlight on the monitor and can see that the lcd is working\015\012though blackness.\015\012\015\012I "discovered" an alternate transformer with the right plug, but is\015\01218V. thinking the 4V difference probably wouldn't make the monitor\015\012worse, I plugged it in for a moment and SHAZAM! the backlights turn on,\015\012stay on. I limited the time at higher voltage\015\012to a few seconds and quit.\015\012Will it hurt the monitor to run continually\015\012at 18V instead of 12V? And second, which part would you think has likely\015\012failed?\015

Answers :

\015\012Running any device 33% higher voltage for any length of time will likely harm it. However, knowing that that worked you have two possibilities.
\015\0121. The 12V AC adapter is dying and simply needs replacement.
\015\0122. The FLR inverter(backlight) is dying and giving it some extra juice forced a little more life out of it.
\015\012Do your best to track down a propper adapter(with 5%, 11.4V-12.6V), if this works that should be your solution, if not then the FLV is dying and you may need a pro to replace it. Generally about $100 at a shop.
\015\012Hope this helps FixYa,
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