I get one HP 250 g7 (la g07dp) that doesn't display with battery but display with charger.
I've Program bios but still the same thing.
And I've confirmed the battery from another PC and is perfectly working.
no short at battery terminal on board.
kindly be of help.
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Check gate voltage of q6010 it should be around 6v. If not present then check for LDO (REGN) voltage at charging ic, if it's not present change the ic....
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Re: DH5VF LA-F952P Motherboard short circuit
Good day sir.
Pls I have HP folio 9470m it is power and stock at 0.170 on DC reading.
I checked charging ic and seen to be ok but 3v/5v looks somehow. any time check pin 1 or pin 2 of the ic the DC reading will reduce to 0.03 and the ic will be heating up and once probe is removed from the pin it will go to its normal position.
I've changed the ic but still the same.
Ic tps 51123
Kindly be help sir.
Any response will appreciative.
Thank you in advance
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Re: samsung sens r470 bios badly needed
Pls I also need BA41-01042A BIOS
PLS IT VERY URGENT
THANKS IN ADVANCE
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HP Probook 4540
Good day everyone
Pls I have this board that is not power at all but immediately I insert DC their is 19v at clr but quickly dropping till 0v
First MOSFET is not switching 19v
After check the gate I discovered it's 19v instead of 6v.
I forced ground to the diode connected with voltage devider resistors and 6v present at the gate and 19 enter clr but voltage at power button.
Kindly help me oo
Any suggestions will be appreciated
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Re: help hp probook 6565b
Good day all, I have the same board HP 6565b (AMD) come up on keyboard while pressing cpslock/NumLock key but not display on screen and external monitor.
I've reprogrammed but bios same thing.
Kindly help.
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probook 6565b
I've one probook 6565b only come up on keyboard *but* not come up on screen and external monitor.
No any deem display on screen to check for lvds (though schematic not available.)
I've checked this
1. All coil voltages are present
2. Bios programmed
All to no avail.
+ve suggestion from any ends will be appreciated
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Re: Dell Latitude D630 won't power up
Good day everyone
I have dell LA 3301p stock at window logo.
I proceed to program bios but after that my display is not coming again.
I've used like 4 different files and I've still return the backup file but same thing.
All coil voltages present.
Pls helpppppp me am highly tired.
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Re: Acer aspire e1-431 problem
Thanks so much for your usual response.
I've done it.
The vcc was getting 3v instead of 12v when only battery is attached. I traced it back and I noticed a diode(pd1) is causing the problem.
And once I replaced it my system power with battery only
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Re: Acer aspire e1-431 problem
Pls I have issue with this same board
Is working properly with adapter but not power with battery.
The battery is charging if adapter is plugged with battery and if I power it, it will still power and if I remove the charger while system is working it will not off.
But anytime I try to power with only charger, the amber light will just be blinking 5 times.
The gate voltage of the switching MOSFET is normal battery MOSFET no short.
Kindly help I've stressed too much on it.
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Re: DH5VF LA-F952P Motherboard short circuit
Pls presently I also have the same board (LA7901p) anytime the processor is inserted the 19v rail will be shorted but when the processor is unplugged there will not be any short at all. I've used up to 5 different processor still same thing.
Pls what might be happening, I've checked all through but to no avail.
Thanks.Last edited by Oj computer; 01-15-2023, 04:39 PM.
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Re: DH5VF LA-F952P Motherboard short circuit
To my own view it seems as if the MOSFET is normal.
But I observe malfunctioning on pu1304 (lm393) ic
Where pin 1 = 0v, pin 2=1, pin 3=0v, pin4=0v, pin 5= 1.7, pin6 =1.4v pin 7= 3.1v and pin 8= 5v.
I don't know if the ic is working normally.
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