Re: HP DV6 cannot turn on
Another way is do one Pin from PL805 desolder and then messure both sides
Another way is do one Pin from PL805 desolder and then messure both sides
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Re: HP DV6 cannot turn on
go on page 45
after PL805 in the near of PC100Comment
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Re: HP DV6 cannot turn on
Or simple remove CPU and try to power onComment
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Re: HP DV6 cannot turn on
tried removing cpu and power on still same from 0.004 pressing power button goes to 0.007, i will try removed pl805 and measure each pinComment
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Re: HP DV6 cannot turn on
removed cpu and removed 1pin of PL805 one side which desolder has 26.5k othe side has 0.565Comment
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Re: HP DV6 cannot turn on
if cpu is plugged in one side lifted pin 30.1k and 0.560 other sideComment
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Re: HP DV6 cannot turn on
which side has the 0.56 ohmComment
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Re: HP DV6 cannot turn on
pin11 from ic or near the capacitorsComment
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Re: HP DV6 cannot turn on
the side of coil pl805 0.56ohm connected to pin11 of the icComment
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Re: HP DV6 cannot turn on
check pc857 otherwise the ic is defective
i think soComment
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Re: HP DV6 cannot turn on
PC857 is ok and pin 11 of pu805ic is beeping to the groundComment
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Re: HP DV6 cannot turn on
anyone can help on this pleaseComment
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Re: HP DV6 cannot turn on
you must change the icComment
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Re: HP DV6 cannot turn on
@mielta thanks for the response is there compatible replacement for this ic TPS51461?i cannot find same ic on scrap boardComment
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Re: HP DV6 cannot turn on
No sorry
you can it order by Ebay or Aliexpress it is not expensiveComment
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Re: HP DV6 cannot turn on
Where and if possible, purchase the part from real distributors or the manufacturer of the component.
This part appears to be available directly from TI (guessing Asia distribution for you):
https://www.ti.com/store/ti/en/p/pro...p=TPS51461RGER
Confirm the package is the same as yours and recommend that you buy it from TI directly so that you have a 100% new and original part.
The prices on Aliexpress are incredibly low but may be ok. The Aliexpress prices are 1/10th the prices on the ti.com webstore. They must be dumping these in Asia or are surplus from closed builds.
https://www.aliexpress.com/item/3289...archweb201603_Comment
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Re: HP DV6 cannot turn on
@mielta i found on scrapboard same tps51461 replacing it still same issue pin 11 is beeping to ground and 0.007 up0n pressing power buttonComment
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Re: HP DV6 cannot turn on
I lifted the pins on PL805 that is connected to pin 11 short is goneComment
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Re: HP DV6 cannot turn on
Then the short is on other side check PC84/88/91/100/78Comment
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Re: HP DV6 cannot turn on
removed pc84/88/91/100/78 tested outside the board all caps are good even all removed still pin 11 is beeping once pl805 coil soldered back the pinComment
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I have Latitude 5420 that it's working fine on battery but when it's plugged on USB C charger it wont turn on.
Battery is charging fine. Also, if I connect the charger while laptop is on, everything is fine, it will charge.
The same thing if I connect to other USB C port.
Charger is OEM -
I have a similar problem... I got an old MBP for free, but wont turn on... Only green light on charger. I measured these voltages. If i try to do an smc reset using keyboard, nothings happen, wont go out the green led. I dont know how to continue, please help me.
SMBUS_SMC_BSA_SCL 3.5V
SMBUS_SMC_BSA_SDA 3.5V
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Hello, i have some issues with my laptop Lenovo Y700-17ISK (motherboard BY511 NM-A541), it started when i turn on the laptop, but the lcd wont turn on, i then connected it via hdmi to tv and screen was ok. So i thought maybe lcd stripe is faulty, i removed the bottom cover, disconnected main battery, reset the cmos by disconnecting battery for 1 min, then slighty move the lcd stripe. Conncted power supply and tuned on my laptop, the lcd turn on, it started to load os, then it turn off, after a second it turn on, then after like 3 seconds turn off again, and so on. Removed power supply, waited... -
ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
Highly Integrated Narrow VDC Battery Charger for Notebook Computers
The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve...11-05-2024, 04:43 PM -
To all the members here...
Let me tell you a little bit about what happened to my laptop (MSI GF63 THIN 11UCX model: MS-16R6) that “maybe” you know how to solve this problem.
So before this problem happened, my laptop was running smoothly. When I wanted to restart my laptop, it looked fine at first. But after I waited for this restart process to take a long time, until finally I panicked (because the restart process did not finish plus the laptop screen only showed a black screen), I immediately pressed and held the power button to force the laptop to turn off. But...
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