Re: 820-01598 EDP cable was disconnected whist testing new screen. No image, no backl
Thanks for all explanation Mon2! Tomorrow the new EDP cable arrives so I will teste it and send pics.
I give me some hope... Technicians Ive asked for help told me that the problem is this shorted area of the CPU caused by a leak of the backlight tension to the neighbor line.
Dont you think that the diode mode in that line directly to the cpu showing zero confirms a blown area of it?
But if you have some insight let me know please. Ill apreciate.
Thanks a ...
Dancauac
New Member
Last Activity: 02-02-2025, 01:45 PM
Joined: 10-19-2018
Location: São Paulo
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Re: 820-01598 EDP cable was disconnected whist testing new screen. No image, no backl
Playing smoothly with sound.
Night shift works too.
Now I found that´s a very comum problem with liquid damage. The oxidation shorts these two pins, sending 50v directly into the CPU.
Rossmann Talked about this several times.
Do you know the best solution for this? Buy a board? Another mac? Try to find someone who changes de cpu?
What you would do in situations like this?
Thanks a lot for all advice and attention!Leave a comment:
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Re: 820-01598 EDP cable was disconnected whist testing new screen. No image, no backl
A sad update:
I measured diode mode on J8500 and found the pin 1 (EDP_AUXCH_N) is shorted to GND (diode mode is 0.008 and should be~0.261).
It is right next to Pin 43 (PPVOUT_S0_LCDBKLT) which is 50v.
The conector, when got loose, shorted these two pins and killed the CPU...
Am I right with this diode reading, right?Leave a comment:
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Re: 820-01598 EDP cable was disconnected whist testing new screen. No image, no backl
AAAhhh!! Rio is amazing!! And you´ve seen all from the sky! Unique experience!
Im from São Paulo and Im moving to Ubatuba beach (north shore, close to Rio state) next month! You´re welcome to visit and stay at home!...Leave a comment:
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Re: 820-01598 EDP cable was disconnected whist testing new screen. No image, no backl
Yes! For sure. I´ve already tested it before got disconnected. And I have some original cracked screens for testing as well.
Thanks for the question!...Leave a comment:
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820-01598 EDP cable was disconnected whist testing new screen. No image, no backlight
MBP2019 A2159 Board 820-01598
Hi Everyone! My very first question and ask for help! Thanks in advance!!!
I was testing the new screen on this MBP but the time I was maging to turno the mac over, the EDP cable got loose.
I disconnected the power, reconnect de EDP cable, holding with screws the screen this time.
Turns on fine, everything works fine, but no image (I used the flashlight) and no backlight at all.
Done SMC and PRAM reset. Nothing changes.
Tested other functional aftermarket and original screens. Nothing changes.
Don´t... -
Re: New Members - please post your introductions here
Hello Everybody! Daniel from Brazil! Working in this area fo 10 years and sometime ago I started to study the microeletronic part od the business. Hard for me who likes nature, outdoor sports and beaches. The micro world of eletronicos fascinates me too, soo I keep going!Leave a comment:
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Re: New Members - please post your introductions here
Hello There! Daniel from São Paulo Brazil!Leave a comment:
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