nhe quan
Member
Last Activity: 04-19-2025, 05:19 PM
Joined: 04-12-2025
Location: Hanoi
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i remove DS2 => the short is gone -
No so ds2 maybe a reason...Leave a comment:
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Break 1ic and loss cs6 š¤£š¤£š¤£
but i can order from aliexpressLeave a comment:
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haha, i have them too, but my skill not good at all.
already check by remove CS5 and CS6 still short so that DS2 are crashLeave a comment:
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hello
i break the IC =))
but remove that and check Pin12 still shortLeave a comment:
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i will try and report but this relate to [B]UVH2[/B]: VIN = 0V ?i will try and report but this relate to [B]UVH2[/B]: VIN = 0V ?i will try and report but this relate to [B]UVH2[/B]: VIN = 0V ?Leave a comment:
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i find the hot part in mainboard it is US12 and when i measure resitance of pin12 it shorted.Leave a comment:
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mon2[USER="295753"]mon2[/USER] now we have
[B]PU301[/B] [B]pin12: [/B]0V,
[B]UVH2[/B]: VIN = 0V
what does this mean ? maybe UB1 relate ???
when i plug AC or battery USB, USB type C port, HDMI port is warm up so that do you have any idea[USER="295753"]mon2[/USER] nowLeave a comment:
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confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltage is [B]3V[/B]
and [B]PU301 pin 17[/B] resistance aroud [B]500[/B]confirm [B]LB1 [/B]voltageLeave a comment:
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My result:
- the resistance to ground @ [B]PL301[/B]: measure with [B]2000 [/B]and it so aroud [B]400[/B]
- confirm if you have the enable signal @ [B]3V_EN (pin 12)[/B] : [B] 0v[/B]
- confirm if you have the enable signal @ [B]ENLDO_3V5V[/B] : [B]3V[/B]My result:
- the resistance to ground @ [B]PL301[/B]: measure with [B]2000 [/B]and it so aroud [B]400[/B]
- confirm if you have the enable signal @ [B]3V_EN (pin 12)[/B] : [B] 0v[/B]
- confirm if you have the enable signal @ [B]ENLDO_3V5V[/B] : [B]3V[/B]My result:
- the resistance to ground @ [B]PL301[/B]:Leave a comment:
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mon2[USER="295753"]mon2[/USER] my condition relate to PU301 and should i remove that to check the 3VALWLeave a comment:
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Update*
i measure PUV1 pin 5 VCC when plug AC and it show 0v, check PCV137,138,272 has being shorted.
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-tempid":"temp_380384_1744624578391_55","title":"image.png"}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-tempid":"temp_380381_1744624477939_175","title":"image.png"}[/ATTACH]Update*
i measure PUV1 pin 5 VCC when plug AC...Leave a comment:
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+3VS is 0V => it relate to UQ1, I measure VOUT1 and VOUT2 and it 0V too , not sure but VIN2 ( +3VALW): 0V, VIN1(+5VALW) : 5V
[ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t136.9 KB ID:\t3614571","data-align":"none","data-attachmentid":"3614571","data-size":"full","title":"image.png"}[/ATTACH]...Leave a comment:
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Thanks you very much
Confirm the VDD voltage which should be [B]+5VALW[/B]. > plug AC in and measure VDD is 5Vā
Also VIN voltage which should be [B]+3VS[/B]. > plug AC in and measure 0V, measure in CVH16 too is 0VThanks you very much
Confirm the VDD voltage which should be [B]+5VALW[/B]. > plug AC in and measure VDD is 5Vā
Also VIN voltage which should be [B]+3VS[/B]. > plug AC in and measure 0V, measure in CVH16 too is 0VThanks you very much
Confirm the VDD voltage which should be [B]+5VALW[/B]. > plug AC in andLeave a comment:
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i plug power and measure the UVH1 pin 1 and CVH14 pin 1 it 0v
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3614534}[/ATTACH]āi plug power and measure the UVH1 pin 1 and CVH14 pin 1 it 0v
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3614534}[/ATTACH]ā...Leave a comment:
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many thank about that i try again and when set a diode mode (2000)
UVH1 and CVH14 pin is aroud 400 but CT87 and CT86 cap around 72, UT4 around 600
,[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3614520}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3614519}[/ATTACH]many thank about that i try again and when set a diode mode (2000)
...Leave a comment:
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oh sorry but my laptop faulty when my PORT3 plug USB TTL 5V pin and touch with the 12V DC module.Leave a comment:
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i not have a tool for measure temp but i think it warm and the place aroud are warm too. the temp can be detect by touch ( when plug battery only, not press power)
however when flip the mainboard and the IC UVH! make hot. Measure the cap CVH14: short when i plug battery[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3614472}[/ATTACH]āi not have a tool for measure temp but i think it warm and the place aroud are warm too. the temp can be detect by touch ( when plug battery only,...Leave a comment:
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*Update: the UT4 componet is JHL8040R icLeave a comment:
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Acer Nitro 5 AN515-57-51G6, GH51GLA-L181P
Hi
i using Acer Nitro 5 AN515-57-51G6 and my laptop geting like below
so when i plug battery or power cable ( not press power button) in this componet ( mainboard name UT4 ) getting hot.
what should i do to diagnose the condition ?
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3613984}[/ATTACH]ā
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"i...
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