Hi! Does anyone have the schematic to this board.
Thanks in advance!
Ryanleng
Member
Last Activity: 07-18-2019, 08:56 AM
Joined: 12-14-2016
Location: New Haven
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Quanta Y0J hP 14" Chromebook
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820-3462 No 5V_S4
PPBUSG3H - 12.56V
PP3V42 - 3.4V
PPVRTC is 3.33V
PPDCIN - fluctuates 16.18 to 16.43V
PP5V_S5 - 5V
PP5V_S4 - .001
PP5V_S3 - MISSING
PP3V3_S5 - 3.33V
PP3V3_S4 - 0.44
PP3V3_S3 - 0.004
PIN 8 U2650. I plug in the charger and take measurement. At first it climbs to 0.110V then slowly drains to around -0.015V then slowly start to climb again. Repeats this. How am I getting anything on 3V3_S3 without any other ones?
Thanks in advance. Have a good day. -
Asus TP500lA Schematic Please
Hi. I have a tech that pulled power connector off of laptop board while opening it. I wonder if anyone has a schematic for this so that I may try to reattach the connector. -
820-3115 Video issues
Hi. So, I have a board here that came in with no backlight, but had full video. I could see folder with question mark. I even ran Ineternet recovery on it. In my attemp to fix the backlight issue I replaced C9020 and C9796 because they looked burnt. Also L9080 was missing completely so I replaced that as well. Turned the laptop on to see if it made a difference and I got a chime with a quick flash from the backlight and no video whatsoever. Just darkness. Started measuring around and this is how far I got before things got worse.
U900 PN 4,5 3.2V
LCD_IG_EN 3.2V
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Nexus 6 No Microphone
Hi. I recently changed a charging port on a Moto Nexus 6 with success on the port but major fail keeping microphone functionality. Thought I was aware of the closeness of the mic to charge port when soldering and I thought I was careful unfortunately the mic is now not working and Im honestly not sure where I went wrong. Everything was taped but i guess it is possible that some flux or alcohol got in from under the tape. None the less I can use insight on what i did wrong and some assistance finding the appropriate parts for microphone functionality, and maybe a schematic for this phone if anyone... -
Re: Schematic for A1502
thank you. -
Schematic for A1502
Would anyone happen to have schematic and board view for Macbook A1502
820-4924-a? Thnx. -
820-00138-a A1398
Good Morning. (Where I am anyway.) Have Macbook Air 1398 with 820-00138-A with liquid damage. Does anyone have schematic and boardview for this board. Thanks in advance for any help. -
Re: Toshiba Satellite S55-C5248
Thanks for the responses.Leave a comment:
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Re: Toshiba Satellite S55-C5248
Tried screen on similar laptop that just just came in. It worked fine. Then put it back on laptop with issues and everything works. Dont have a clue what just happened.Leave a comment:
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Re: Toshiba Satellite S55-C5248
Would anyone happen to have a schematic for this board?Leave a comment:
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Re: Toshiba Satellite S55-C5248
OK. Will take board out and throw it under microscope. Thanks.Leave a comment:
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Toshiba Satellite S55-C5248
I Have a Tosh. Satellite S55 that was dropped. Black screen, no backlight on LCD. It does get video trough HDMI. I havent seen a screen just go black without a back light or an image in the background after being dropped unless a motherboard issue is present. But like I said HDMI is working. Reluctant to order a new screen. Any thoughts? Thanks in advance. -
Re: Macbook 1268 No HDD Power
It ended up being a half dead inductor in the SATA circuit. Thank you for your response.Leave a comment:
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Re: Macbook 1268 No HDD Power
I have schematic and boardview. I am new to motherboard repair. I will go over what you suggested. Thanks for the reply, I appreciate it.Leave a comment:
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Macbook 1268 No HDD Power
I Have an early 2011 MB 1268 (820-2915) with a fried SATA cable. Changed he cable and still no response from HDD. Boots with HDD connected to USB without a problem. I am still a bit new to diagnosing logic boards but this is what I have done so far.
L4500 has 5v.
J4501
p1 & 2 = 5 v
pins 9, 10, 11 & 12 have all close to 5v. the rest fluctuate.
Also found that It wont turn on with magsafe. Only battery. Once its in MacOS it does indicate that it is charging. Thank you for any help.
Ryan -
Re: New Members - please post your introductions here
Hey everyone my name is Ryan and I'm from the New Haven area. I have been in the PC business since my early 20's. (about 15 yrs now) I've used the threads as a resource many times in the past but never posted. Recently I have been getting into laptop circuit board repair which again led me here. Its good to be here.Leave a comment:
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