Sony VAIO VPCCB LED Screen Blown Fuse?

I liquid damaged my LED screen and it was pretty bad but it eventually dried. It was working but I was annoyed by the stains and I ordered a new one. I figured since I ordered a new one why not open the current screen up and see 'LG's technology'.

Prior to opening it up I swapped this screen with several others to no avail it, has to be a specific LP156WF1 (TL)(C1) specific for Sony or it won't work) I did this with battery, power plugged and even with the laptop on and nothing happened (as I was watching it dry) the others didn't work but the original stained one displayed. Figured I had a new one coming let me tinker with it. After totally diassembling the LED screen and fully letting it dry (there were 3 sheets of plastic inside it) I put it back together and turned on the laptop to only notice the screen no longer had a back light. After investigating I realize if I put a flashlight on the back (rear side) of the screen I can faintly see the desktop otherwise it is pitch dark.

I am now finding out there is a fuse attached to blow on most laptops containing LED screens. Did I blow the fuse or just damage the original screen when I opened up the screen? My new screen will be here in about a week or so.

 

The fuse is blown.

 

Hey I decided to open the laptop and look at the board and I have MBX-239 Rev 1.4 took me almost 2 hrs to take it apart so. The only thing that resembles a fuse nearby is on the back side of the lvds connector is labeled F15 with an N written on it. Is this it? There is also another one close by labled F13. When I check for continuty I am getting a reading of 1 which means no continuity I assume, with both these fuses. I doubt my camera will capture a detailed photo of the spot on the MBX-239.

 

On the F15 fuse I am getting a reading of 1 and on the F13 fuse depending on how I take the reading I am getting 989 or 1854.

 

Aside from above 2 fuses all other fuses on the board are 0 ohms

 

It could be F13 since it reads high.

Sent from my C6606 using Tapatalk 2

 

Well the F15 is directly behind the LVDS connector and is giving me a constant reading of 1 no change, no beep so I am assuming it is blown. The F13 fuse itself is fine but a small part next to it (which I mistaken for the fuse) is giving me the high reading it looks like a fuse but it is not.

 

Any good fuse must have read of 0 ohm.
If your volt meter doesn't move (analog) or not at 0 (digital), then the fuse is blown.

Sent from my C6606 using Tapatalk 2

 

F15 tests as 1 so it is bad but F13 is good. The part to the left of F13 shown with blue arrow is the one giving me the high readings. Thanks.

 

Part pointed by blue arrow is a resistor.
F13 is the the one to the left marked as P15 and it is not LCD fuse.
F15 marked N in brown color is the one

 

No luck yet, I bridged the fuse and I still don't have any backlight. The new screen is here but has been held up by customs, should have it in a couble of days. But even though the old screen was damaged it still worked after drying before the fuse blew. Is there something else wrong here? How about that resistor next to F13 that gave the high readings?

Well the fuses on the actual back of the old screen test ok. Any ideas?

 

Got the new screen today and no luck as well, I still have no backlight although the new screens seems a little bit less dimmer than the old one. What could be wrong the fuse is bridged?

 

Let take photos of both side around LCD connector one more time and post them here.
I will look closer.

 

SUCCESS!
Thanks ngvuanh!
Rebridged the fuse and it worked like a charm thanks.
View attachment 101185

 

hey i need help in finding f 15 fuse in my sony vpceb laptop

 

Hi,
I have the same Problem, no Backlight with my new screen. I think beacouse i dont remove the accu while screen replacing :-(.
I dont understand what you have do?
You bridged the F15 Fuse ? You have a Picture of it ?