thread top ad

Collapse

Announcement

Collapse

READ BEFORE REGISTERING SO YOUR ACCOUNT WORKS

In order for your account to be activated INSTANTLY, your PayPal email MUST MATCH THE EMAIL YOU USE TO REGISTER YOUR ACCOUNT ON THIS FORUM!! If your PAYPAL email address differs from your FORUM email address, your account will have to be activated MANUALLY when a customer service agent gets around to it.

I realize this sucks, and I do apologize.
See more
See less

820-3662 fan spin, chime, external display but no internal display

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • laptopcity
    replied
    thanks Duke :-)

    Leave a comment:


  • dukefawks
    replied
    Could be backlight issue on the board. I would first wait for the test LCD to arrive before messing with it.

    Leave a comment:


  • laptopcity
    replied
    Hi Duke yep your right , i have picture if i hold a light behind the apple logo, thanks for pointing me in the right direction

    Leave a comment:


  • laptopcity
    replied
    I will when I'm back at the workshop , just checking I understand correctly :-)

    Leave a comment:


  • dukefawks
    replied
    Why didn't you check it like I advised?

    Leave a comment:


  • laptopcity
    replied
    Hi Duke thanks for joining in, so are you saying if I'm getting the 5v to the lcd and the backlight chip is enabled (Q7706 ?) then it has to be screen or lcd cable issue ?

    Leave a comment:


  • dukefawks
    replied
    There is 5V to LCD and backlight chip is enabled. There should be an image if you hold a flashlight on the back of the Apple logo. There is indeed no backlight.

    Leave a comment:


  • laptopcity
    replied
    im just being stupid not getting a test screen lol, just jumped on ebay and brought broken lid assy but still displays an image for £25 inc delivery, should have done that in the first place instead of using guess work :-) , thanks for the help though but guess i should wait until it turns up and just get on with another one :-)

    Leave a comment:


  • aprendiz
    replied
    Could be a broken one, also make a continuity test from logicboard connector to the other end of cable....

    Leave a comment:


  • laptopcity
    replied
    already changed the lcd connector just incase , just really didnt want to buy a screen assy just to test it :-(, wondered if i was missing the obvious

    Leave a comment:


  • aprendiz
    replied
    you need a display assembly for test, inspect connector closely for water damage....

    Leave a comment:


  • laptopcity
    replied
    5v at l8300 and yes it was water damage

    Leave a comment:


  • laptopcity
    replied
    thats the thing i dont have one to test with,

    Leave a comment:


  • aprendiz
    replied
    Water damage???? Do you have another display assembly to test?? Voltage at L8300???

    Leave a comment:


  • jgraffis
    replied
    have you tried testing with a known good display and cable?

    Leave a comment:

thread bottom ad

Collapse
Working...
X