Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Laptops, Portable, and Mobile Devices
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 01-02-2014, 05:55 PM   #41
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default Re: Need help finding LED backlight fuse [PICS]

Checked under microscope and the black 8-legged component has written on it:
MB20
N03
CCE0078
gridl0ck is offline   Reply With Quote
Old 01-09-2014, 08:53 AM   #42
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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
gridl0ck is offline   Reply With Quote
Old 01-09-2014, 10:28 AM   #43
dj_ricoh
Badcaps Veteran
 
dj_ricoh's Avatar
 
Join Date: Jan 2013
City & State: London
My Country: uk
I'm a: Knowledge Seeker
Posts: 1,998
Default Re: Need help finding LED backlight fuse [PICS]

what mobo model you have?
__________________
Just cook it! It's already broken.
dj_ricoh is offline   Reply With Quote
Old 01-09-2014, 11:05 AM   #44
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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 helps
gridl0ck is offline   Reply With Quote
Old 01-14-2014, 06:57 AM   #45
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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 .
gridl0ck is offline   Reply With Quote
Old 01-14-2014, 09:11 AM   #46
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default 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.
lord is offline   Reply With Quote
Old 01-14-2014, 10:43 AM   #47
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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.
gridl0ck is offline   Reply With Quote
Old 01-14-2014, 11:10 AM   #48
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default 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?
lord is offline   Reply With Quote
Old 01-14-2014, 11:21 AM   #49
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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-1
gridl0ck is offline   Reply With Quote
Old 01-14-2014, 11:44 AM   #50
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default 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$.
lord is offline   Reply With Quote
Old 01-14-2014, 11:53 AM   #51
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default 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.
lord is offline   Reply With Quote
Old 01-14-2014, 12:12 PM   #52
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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.
gridl0ck is offline   Reply With Quote
Old 01-14-2014, 12:21 PM   #53
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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.
gridl0ck is offline   Reply With Quote
Old 01-15-2014, 02:45 AM   #54
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default 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.
lord is offline   Reply With Quote
Old 01-15-2014, 08:08 AM   #55
alihomee
Badcaps Veteran
 
Join Date: Dec 2012
City & State: kuala lampur
My Country: pakistan
I'm a: Knowledge Seeker
Posts: 1,039
Default Re: Need help finding LED backlight fuse [PICS]

do u have 12v on your led
alihomee is offline   Reply With Quote
Old 01-15-2014, 08:45 AM   #56
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default Re: Need help finding LED backlight fuse [PICS]

And are you sure that your screen is OK?
lord is offline   Reply With Quote
Old 01-15-2014, 09:46 AM   #57
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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 .
gridl0ck is offline   Reply With Quote
Old 01-15-2014, 09:54 AM   #58
lord
Badcaps Veteran
 
Join Date: May 2011
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 301
Default Re: Need help finding LED backlight fuse [PICS]

Sure, the LCD flat cable can cause this.
lord is offline   Reply With Quote
Old 01-18-2014, 08:52 AM   #59
gridl0ck
New Member
 
Join Date: Dec 2013
City & State: Middle Earth
My Country: UK
I'm a: Knowledge Seeker
Posts: 14
Default 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!!
gridl0ck is offline   Reply With Quote
Old 01-18-2014, 10:23 AM   #60
xredhawk
Senior Member
 
Join Date: Jul 2011
Posts: 103
Default Re: Need help finding LED backlight fuse [PICS]

is the gpu nvidia?
xredhawk is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 06:29 AM.
Did you find this forum helpful?