Search found 7 matches

by abgersaurus
Thu Jan 05, 2017 1:50 pm
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

is it still possible though that one of the so called capacitors might have to be replaced? my monitor stopped working when I swapped it and then the backlight did not work anymore?

the guy wrote that they would only blow as a last resort, which might be the case... :o
by abgersaurus
Thu Jan 05, 2017 1:41 pm
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

oh ok, I guess I'll just have to ask around a bit to be sure before I do something stupid! :roll:
by abgersaurus
Thu Jan 05, 2017 1:25 pm
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

but the green thingy looks just like the "fuse" that you showed earlier but just with an 0 instead of N
by abgersaurus
Thu Jan 05, 2017 12:41 pm
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

RealBlackStuff wrote:I repeat: those F4 and F11 thingies (green with a white O) that you marked are NOT fuses!
They are most likely zero-Ohm links.
ok, can you see the actual fuses then? that would be much appreciated :)

and howcome the F11 green thingy with the 0 does not beep as the F4 does?
by abgersaurus
Thu Jan 05, 2017 12:07 pm
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

Thank you guys, I did however start to take it all apart before I saw your suggestions, and by testing EVERY single fuse with the "F" mark I finally concluded that the "F11-Fuse" is defective as there is no Continuity/Beep. I therefore plan on contacting my local pc repair shop for some assistance s...
by abgersaurus
Thu Jan 05, 2017 7:05 am
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

Re: T540p no backlight (but there is picture)

Welcome to the Forum. Most likely you've blown a fuse. Check for fuses around the LCD-cable connector on the motherboard. They are usually indicated with F1, F2, F3 etc. printed nearby. Measure them with a multimeter, set to Continuity/Beep. If you can, replace it, otherwise piggyback solder anothe...
by abgersaurus
Thu Jan 05, 2017 6:50 am
Forum: ThinkPad T400/410/420 and T500/510/520 Series
Topic: T540p no backlight (but there is picture)
Replies: 15
Views: 1530

T540p no backlight (but there is picture)

Hi guys! I'm really having a bad time, my laptop is currently unusable since the backlight is not working on either the TN panel or IPS panel that I have for it. when I first got the laptop it worked fine, allthough it ran a bit hot 65c idle. So I decided to change the thermal paste for with some Ar...

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