nate8organic
New member
have a 820-2936 with no data. the screen under a flashlight shows really dark. tested the l9008 & l9004 both are good. I also replaced the lvds connector. any ideas?
Thanks
Nate
Thanks
Nate
-
For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.Subscribe Now
820-2936 no data or bklt
- Thread starter nate8organic
- Start date
nate8organic
New member
yes 3v on both l9004/8 and a solid 3v on the smc lid. when i turn it on the screen reacts and makes the light become hard to see through the glass. if i turn it off i can see my light very well. this is the same thing im getting with the other board i have the 820-2914. what would make the screen turn dark to the point where my flashlight cannot show through it very well?
nate8organic
New member
im getting 3.2v PPBUS_SW_LCDBKLT_PWR_SW 12.4v
pp3v3_sw_lcd im getting 3.4v. is this what u wanted im not 100% sure were i should test for the backlight bus to lcd con.
pp3v3_sw_lcd im getting 3.4v. is this what u wanted im not 100% sure were i should test for the backlight bus to lcd con.
nate8organic
New member
came across this board in a pile. i went over and checked the readings here and PPBUS_SW_LCDBKLT_PWR_SW = 12.4v this is good right?
pp3v3_sw_lcd im getting 3.4v.
and on PPVOUT_SW_LCDBKLT im getting 27v and this is good also. i am noticing you said that the backlight is not boosting but with 27v does that not mean the back light is fully boosted? i get a faint screen light and know the backlight has turned on but not at full brightness, also i am getting no data or logo but i get a nice long dong. could this have to do with the gmux or perhaps the graphics? i checked the pwm and getting 3.4v
pp3v3_sw_lcd im getting 3.4v.
and on PPVOUT_SW_LCDBKLT im getting 27v and this is good also. i am noticing you said that the backlight is not boosting but with 27v does that not mean the back light is fully boosted? i get a faint screen light and know the backlight has turned on but not at full brightness, also i am getting no data or logo but i get a nice long dong. could this have to do with the gmux or perhaps the graphics? i checked the pwm and getting 3.4v
nate8organic
New member
pins
1-0
2-.017
3-.017
4-.352
5-.514
6-.537
7-.579
8-.365
9-.364
10-0
11-.364
12-.364
13-0
14-.364
15-.364
16-0
17-.363
18-.363
19-0
20-OL
21-.602
22-.602
23-OL
24-.634
25-.635
26-.635
27-.632
28-.632
29-.632
30-OL
1-0
2-.017
3-.017
4-.352
5-.514
6-.537
7-.579
8-.365
9-.364
10-0
11-.364
12-.364
13-0
14-.364
15-.364
16-0
17-.363
18-.363
19-0
20-OL
21-.602
22-.602
23-OL
24-.634
25-.635
26-.635
27-.632
28-.632
29-.632
30-OL
nate8organic
New member
i'm getting a black screen with backlight. just tried replacing the connector and tried swapping out the screen, no change. i tested the screen on a working board and the screen is working. there are some red points around the connector and u9701.