adamski1952
Senior Member
Last Activity: Yesterday, 12:18 AM
Joined: 10-24-2021
Location: lancashire
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Check in the sticky( ic marking codes) : [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/80630-ic-marking-codes-and-datasheets[/url]https://Check in the sticky( ic mark...tasheets[/url] -
sy8386brhc v sy8388brhc
Hi all working on an [COLOR=#000000][FONT=TT Norms Pro][SIZE=15px]Acer Aspire A515-57[/SIZE][/FONT][/COLOR].The 3v LDO CHIP Sy8388brhc chip has shorted out. pu301 on the schematic here: [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/104372-acer-aspire-a515-57-schematic-or-boardview[/URL]
My question is can I replace (Sy8388brhc global part #SY21243B) which has High Efficiency Fast Response, 8A, 28V Input, with the sy8386brhc (global part# SY21138BRHC) wihch only supports... -
Only other thing I can think of is to try a different power supply.The tester you used only shows voltage without load.There may still be a problem there.Leave a comment:
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Have you tried resetting the cmos? Sorry .I missed that one.It seems you have....Leave a comment:
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You need to post this in bios requests!!...Leave a comment:
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[ATTACH]n3599611[/ATTACH] virtualy idenentical....Leave a comment:
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samsung s7 file is encryptedLeave a comment:
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It opens with boardviewer.Leave a comment:
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acer chromebook 515 plus schematic or boardview
Hi all looking for schematic and boardview if possible for acer chromebook 515 plus model #CB515-2H . m/b LA-M832P.
anyone help please? -
I believe that the disk drive is married to the board.
I hear you can swop the drives internal board over to the new one and it should work.Leave a comment:
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If schematics are available please share.Leave a comment:
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Thanks Stefan.Much appreciated.Leave a comment:
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Hi all hoping someone can help convert the exe bios file from dell (attached) It seems they have come up with a new decryption technique and i'm not sure how to convert it.
The board is Wistron Antman 14 AMD UMA 213084-SC with ryzen 7 serial no. J802RL3 [ATTACH]n3576940[/ATTACH]...Leave a comment:
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Thanks for pointed them out.They read good.
Struggling to find the 500k shown on the diagram. If thats ok it must be something to do with chip.Leave a comment:
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Thanks for the help Iotas.
Could you identify them on my first picture so i can test?.Leave a comment:
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Back again.
I'm a little confused!!
Can somone please confirm what voltage should be going to the wifi chip from that buck converter. i've been looking at a youtube vid by ToltecMerc ( [B][URL="https://www.youtube.com/hashtag/163"]#163[/URL] Repair of PS5 EDM-020 Rather Dead) [/B][url]https://www.youtube.com/watch?v=SkcbiPyDdsE&t=5s[/url] .
At 15.10mins he uses a good EDM-010 board to check the output on that inductor and he gets reading of 1.8v which makes sense.I get 3.3v which using continuity seems to feed straight to the 1.8v caps behind the wifi chip.
...Leave a comment:
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My bad.
Ive never turned my hand to reballing so was hoping it was a cap.Leave a comment:
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Just to update,I managed to remove the shield on the wifi chip and was the able to see the short was indeed on the ic.Sent for replacement so should soon be up and running.Unfortunately I managed to lose one of the two 22uf caps on the output side.Just wondering what voltage they are.Leave a comment:
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Thanks for the input lotas,Just removed all the shorted caps uner the ic (see picture) all 10Uf. removed the two 22uf caps near the inductor also but still shorted.Looks like its the Wifi chip itself, Is there any way to test it.
[URL=filedata/fetch?id=3532745&d=1734744704][ATTACH=JSON]{"alt":"Click image for larger version Name:\tIMG_20241220_123723.jpg Views:\t0 Size:\t1.58 MB ID:\t3532745","data-align":"none","data-attachmentid":"3532745","data-size":"medium"}[/ATTACH][/URL]...Leave a comment:
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