Re: Need help finding LED backlight fuse [PICS]
Checked under microscope and the black 8-legged component has written on it:
MB20
N03
CCE0078
Checked under microscope and the black 8-legged component has written on it:
MB20
N03
CCE0078
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Re: Need help finding LED backlight fuse [PICS]
Sorry just been dicharged from hospital (great start to new year). Anyone was anyone able to look at the pictures and identify the jumpers it.vendor is on about? Looks like I will have to fork out for a replacement laptop
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Re: Need help finding LED backlight fuse [PICS]
what mobo model you have?Just cook it! It's already broken.Comment
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Re: Need help finding LED backlight fuse [PICS]
Hi, the pics are uploaded on page 2 last post if it helps. The model of laptop is k53e but the mobo says it is k53sd. Hope this helpsComment
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Re: Need help finding LED backlight fuse [PICS]
Just an update, I purchased a new LCD just to make sure it wasn't that. Unfortunately the new LCD shows no back light either. Definitely a problem on the motherboard I guess. Looks like I will have to fork out for a replacement laptop this time.
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Re: Need help finding LED backlight fuse [PICS]
If you have CCFL displays you have to be sure that you lamp is OK and your inverter is working.
On LED display, such as on K53, you need the schematics to find out which pin is LCD power supply, which is backlight power in which is stand by pin for the backlight, and make sure that you have all the voltages. If not follow the line backwards and measure to see where is the faulty device.Comment
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Re: Need help finding LED backlight fuse [PICS]
Thanks for the reply Lord. I am unable to locate any schematics anywhere. A few others have tried to find them also to no avail. Have you ever worked on this mobo and maybe remember which pin is which? Thank you.Comment
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Re: Need help finding LED backlight fuse [PICS]
No, i don't remember
Do you have some other part number of the board besides K53SD and 69N0KAM13D02?Comment
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Re: Need help finding LED backlight fuse [PICS]
Only "important" looking parts numbers on the board are:
BTC-202B
94V-0
PN:60-N3CMB1500-C07
Also the clamp that holds down the heat sink has written on it: 13GNXZ1AM01X-1Comment
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Re: Need help finding LED backlight fuse [PICS]
I send an email to a notebookschematic.com guy with whome a recently spoke to. Usually the schematics are 10-12$.Comment
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Re: Need help finding LED backlight fuse [PICS]
And here is the reply:
Sorry, I haven't got this schematic,
Thank you for your interest.
Try to search here:
http://www.laptopserviz.bg/
I know this guy has a lots of schematics.Comment
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Re: Need help finding LED backlight fuse [PICS]
Thanks for the input Lord. Will try and give it a search for the schematics. Since I am looking at replacing the laptop I might just super toast it with a reflow gun.
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Re: Need help finding LED backlight fuse [PICS]
it.vendor was on about the mosfet below pin one (8-legs) do you think it will be that? I have located the part in china
http://www.ebay.co.uk/itm/1-Piece-Ne...-/271125214452
I wouldn't have any difficulties heating it on. May give it a go and see what happens.Comment
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Re: Need help finding LED backlight fuse [PICS]
If you have power on pins 1,2,3 and 5,6,7,8 then the MOSFET is OK. Also pin 4 should have some voltage.Comment
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Re: Need help finding LED backlight fuse [PICS]
do u have 12v on your ledComment
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Re: Need help finding LED backlight fuse [PICS]
And are you sure that your screen is OK?Comment
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Re: Need help finding LED backlight fuse [PICS]
The LCD is ok I ordered a replacement to double check and it also had the same problem. Any chance the LCD cable can be causing this? My multimeter has gone caput at the moment and have ordered a new one. Will test the pins when it is here
.
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Re: Need help finding LED backlight fuse [PICS]
Sure, the LCD flat cable can cause this.Comment
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Re: Need help finding LED backlight fuse [PICS]
New screen cable did not work either. Going to have to get a replacement laptop. Since I am, I will reflow this board in to the abyss!!
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Re: Need help finding LED backlight fuse [PICS]
is the gpu nvidia?Comment
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Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hi guys,
I'm inexperienced with electronics repairs, I've done a little bit of soldering caps and whatnot, but i have a blown fuse on this mimaki printer I got which I have bought a replacement for.
How do I remove this type of fuse (see picture)...it kinda looks like it would pull out of that bracket but it didn't come at first pull and I didn't want to brute force it incase it's soldered on there like most of the rest of the components.
Anybody know how to remove this type of fuse?
(The fuse is toward the bottom of the image labeled F2)... -
I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
Hi,
I recently picked up a used Matsui 175S microwave that was powering up (starts, turntable rotates) but not heating. From looking online the most likely culprit was the fuse, but unfortunately in this one the fuse had heated up and fused with the (badly designed) fuse holder and couldn't be removed. I guess this might indicate further issues beyond the fuse itself but at this stage I just want to replace the fuse and see how I go from there.
Anyway since I couldn't get out the fuse itself the easiest fix was to replace the fuse holder assembly that runs between the...
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