MBX-247 No Backlight

[munichrepair]

Hi,

so, the customer changed the display without pulling the battery first.

result: everything works fine, but no backlight on the display.

so what should i do, what should i test first?

thx in advance

p.s.: im an advanced beginner, so please be patient with me

[ktmmotocross]

Re: MBX-247 No Backlight

SIO ic.

[munichrepair]

Re: MBX-247 No Backlight

where can i find that IC?

[ktmmotocross]

Re: MBX-247 No Backlight

Biggest IC with pins. in your case is the EC NPCE791L/NPCE795L

[dj_ricoh]

Re: MBX-247 No Backlight

come on!

check voltage on every pin on the LCd connector make a photo and mark pin 1

[loser18]

Re: MBX-247 No Backlight

But the image comes up?

As ricoh said post voltage of all pins on LCD connector and carefully check around for burnt components...(best is to use microscope, if you have any)

[dspok]

Re: MBX-247 No Backlight

should have blown 19v fuse in my opinion near or rear part of lvds connector.

[tito78]

Re: MBX-247 No Backlight

change fuse Backlight look neighborhood to the connector lcd

[ktmmotocross]

Re: MBX-247 No Backlight

if u have luck u just blown fuse but mainly u short and blown whole trace of backlight signal from SIO, somust change SIO