LearningMan
New member
Hi.
I have an 820-3476 board with no backlight. The board had already been worked (when I say worked I mean attacked with a hot poker). After a bit of digging and a lot of F*ing about clearing up everything that had already been done I found what the last guy had missed... I think.
R7731 and R7732 on the feedback voltage divider to U7700 both measured 12.51k parallel resistance because of a short to ground on PPVOUT_S0_LCDBKLT on the LVDS connector. After 4 hours, it was a short on the LVDS!
Are the MacBook Pro retina and MacBook Air 2011+ LCD connectors the same? They do at least look and fit the same.
There is also no enable signal EDP_BKLT_PSR_EN coming from the PCH.
Any info on this would be great please
I have an 820-3476 board with no backlight. The board had already been worked (when I say worked I mean attacked with a hot poker). After a bit of digging and a lot of F*ing about clearing up everything that had already been done I found what the last guy had missed... I think.
R7731 and R7732 on the feedback voltage divider to U7700 both measured 12.51k parallel resistance because of a short to ground on PPVOUT_S0_LCDBKLT on the LVDS connector. After 4 hours, it was a short on the LVDS!
Are the MacBook Pro retina and MacBook Air 2011+ LCD connectors the same? They do at least look and fit the same.
There is also no enable signal EDP_BKLT_PSR_EN coming from the PCH.
Any info on this would be great please