Re: 820-01521 schematic
Thansk mate!
mtiago182
New Member
Last Activity: 12-19-2022, 09:56 AM
Joined: 07-09-2020
Location: Joinville
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Re: 820-3115 no backlight / no lcd
Ah ok.
LVDS_DDC_CLK = 3.3V and 0.643 in diode mode
LVDS_DDC_DATA = 3.3V and 0.649 in diode mode
unfortunately I don't have an ocilloscope to measure the clock...Leave a comment:
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Re: 820-3115 no backlight / no lcd
Thanks for answering.
PRAM reset yes.
I've tried with 2 LCD, both work on another Mac.
Sorry I didn't understand the meaning of "DDC"....Leave a comment:
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Re: 820-3115 no backlight / no lcd
Forgot to mention, SMC_LID and SMC_LID_R = 3.44V...Leave a comment:
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820-3115 no backlight / no lcd
Hello everyone!
I have a 820-3115 motherboard that don`t show image (no lcd and no bkl), external display works fine and J9000 looks fine.
LCD_IG_PWR_EN = 0V (missing)
PP3V3_LCDVDD_SW = 0V (missing)
PP3V3_S0_LCD_F = 3.317V
PPVOUT_SW_LCDBKLT = 0.011V
Already replaces U9000 and R1984, although the diode and resistance measurements are ok. Every diode and resistance measurements from pin 7 to 17 at J9000 seens ok. LCD_IG_PWR_EN, PP3V3_LCDVDD_SW diode and resistance measurements are also ok.
I'm starting to think my problem... -
Re: lenovo s340-15api
I also looked this week and found just the schematic.
---- No Boardview until here ----Leave a comment:
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Re: New Members - please post your introductions here
Hello, I`m Tiago from Brazil.
I work in a service that specializes in Apple products. When I`m not at work, I use my free time to study and repair laptops in general.
Verry happy to be here and hope to learn a lot whit you guys
Tiago.Leave a comment:
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