Hello everyone in help with a macbook pro retina 15.4 a1398 emc 2909 no picture no light.
Cam in for battery and spk, screen was working
After replacement of said parts no picture or light. I do have hdmi out with 50v on caps. But with out hdmi just 12v on caps trying to narrow it down thanks for any help
phantom1
Member
Last Activity: 06-08-2025, 02:54 PM
Joined: 05-22-2018
Location: Auburndale
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Macbook pro retina a1398 no picture or backlight
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Re: Help Identifying an IC chip
thanks R_J and RegorForot for your help I have ordered the IC chip from mouser I do think as well this is the right IC and yes there is a protection diode before this IC so that makes sense there would be a voltage drop from the diode I just got in a hurry but after thinking about it and looking at the layout it made the light come on lol thanks for your quick response I will post back again once I get the part in and installed. -
Help Identifying an IC chip
hello folks
I need some help to see if anyone can Identify this (IC) I believe its a Reg of some type I will post some pics as well. its in a test equipment hand held network tester its part of the power side of it its a 6vdc rail only thing on the chip is as follows (BPV 7CK EYL9) Its a 10 pin Plus bottom ground plane
I am including a layout/pinout of the ic and what i had on the traces that go to the Reg as best as i can see and test pins 2 and 4 were shorted is what i found with the ic under thermo cam it was getting 300+ almost instant pulled off pcb and no more short now need...Last edited by phantom1; 12-26-2022, 08:15 PM. -
LG 27up600-w
hello everyone looking for a schematic for this lg 27up600-w
main board is not working correctly no power up no light on button its just dead power supply is ok 19+ vdc and load at 2amps is holding as well not much in this unit just the main board has its power supply intergraded any help would be appreciated no signs of burning cant find any heat spots checked with flir
thinking missing voltage somewhere this thing was new and just not used last worked before it was put up and now not work as i was told but of course that's what i was told thanks again for any info I am trying... -
Re: Asus G77jw-ROG Bios bin file needed
thanks guys but I have found bios ver 204 for this laptop got it flashed and working all is good thanks anyway for your help
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Re: Asus G77jw-ROG Bios bin file needed
here is the bios i have with the password on it...if someone can edit and take the password out thanks...Leave a comment:
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Re: Asus G77jw-ROG Bios bin file needed
s/n AAN0AS901053443
I dont have a bios original backup but i can get a read on the bios chip if thats what you are needing ?Leave a comment:
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Asus G77jw-ROG Bios bin file needed
hello everyone looking for a bios.bin file I can flash to my ASUS G73jw-rog laptop, has a password on the bios set and cant get passed that or a work around I already did a cmos clear removed the battery didn't make a deference thanks in advanced for any help -
JHS365-10-A51 help find a schematic
hello everyone best that i can tell this is the same board I have if anyone may have a schematic for this or even a boardview but i think not when i cant find a pdf, either thanks for any help boots to bios screen and freezes and thats it !
I have also attached a pic with board numbers if that helps and link to what looks like the same board, thanks again long shot but you never know...
[url]http://www.giadatech.com/index/product/detail/aid/454.html[/url]https://hello everyone best that i c...en a boardview... -
Ipad Air 3 10.5" A2152
Thanks in advanced for any help on a schematic for this Ipad Air 3 10.5" A2152
water damage no start pulled screen off had water damage on home button connector on the screen itself very little on MB clean for the most part tried powering up with out screen and watching amps it response to power button then i see mA start to ramp up to about .800mA up to maybe .900mA
no shorts or hot spots looks good under thermo flir so I have a screen coming as i dont have any info to check anything on the MB thanks again for any help.
ps.. Battery is ok as well 4.01 vdc -
Re: New Members - please post your introductions here
Hello my name is Eddie and thanks for the great welcome feels like home already,
well my Quick sum is been learning electronics from on early age tinkering around at the age of 10, always love to take things apart see how they work.
I have had meany titles automotive/diesel, Petro fuel/systems pos/ dispensing/pumps hardware and electronics computer/networking cabling.
mostly now spent my time building projects bench test tools for repair and repairing old test gear that i may come across,...Leave a comment:
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