This just started yesterday. The backlight on the front of my Razor won't go off. I've reset it to 7 sec., 15 sec. and then completely off...still won't go off. Problem that it is causing is that my charge won't last as long because the light is always on. Anyone know what I can do?
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There are a lot of things that could be causing the backlight issue you're seeing. First thing to look at is the 7 caps that sit next to the 24 volt backlight supply plug, those have been known to give issues but going by how this set has acted in the past I don't think this is your issue but check it first. If the caps look good measure the 24 volt supply that goes to the LED driver, make sure you see correct voltage there, next thing I'd look at is the LED driver board, be sure there aren't any burned spots on that board, next test is going to be the individual rails going to the LED strips and see if you see voltage there, if you don't replace the driver, if you do it has to be backlights but generally only some will fail like you were seeing to start with, with some dark areas on the screen
Check voltage at the power board. After 120 volts enter the TV, there is fuse then a small high voltage transformer, then a 100 uf rated at 450 volts capacitor. There should be 390 volts DC at the capacitor. Without this 390 volts the TV will shut down.
Hi I looked up the book, L is a malfunction terminal but I've rarely seen it connected also it says something about the backlight display feature displaying (dL).....Best bet is gently pull the thermo front off the wall REMOVE the batterys for about 10-15 minutes and the thermo will at least restore (reset) the factory default settings & start over.
Select Menu > Settings > Display settings and then:
Backlight time—to set whether the backlights are switched on for 15 seconds (Normal), for 30 seconds (Extended), or not at all (Off). Even if Off is selected, the backlight stays on for 15 seconds when the phone is switched on.
It's the last line that worries me, though: if your "kid" has caused the backlight to FAIL, then you're faced with no backlight, or a repair/replacement bill!
Check in the Display Settings of your handsets. There you can specify for how many Seconds you like to put ON your handset's LCD Backlight. You can customise it for 5 Sec, 10 Sec, 15 Sec, 30 Sec, 1 Minute, etc.
It's the backlight supply tripping out from backlight failure, but the thing still stays on. I got it to act right by switching to factory presets with some fast menu action once, but the general solution is going to involve tricking the backlight into staying on; you can look at the thing in bright ambient light to see that the display is still working, but of course without a backlight it's pretty much useless.
Since $100 buys a better and more efficient monitor, just replace it; otherwise of course you can either replace the backlight (or go for one of the projector mods) or convince its drive circuit to put up with it a bit longer. I spotted a bad capacitor but swapping that out hasn't gone well yet....
Try removing the battery for a few seconds then restart the phone. Other than that, it could be a defective switch on the phone that detects when it's closed. If it answers / hangsup when the opened or closed... the switch is good.
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