I urgently need help with dell laptop,when I put in the charger I hear a continues sound on the board and when you press the power switch the power led comes on and goes off few seconds with the sound still coming from the board,I don't know what to do about it and can anybody help me with this,the mobo number is LA-6471P Rev:1.0
-
-
Re: Dell laptop with power problem
please this is the model is Dell inspiron P08T and the mobo number is LA-6471P Rev:1.0,tnxComment
-
Re: Dell laptop with power problem
with the sound on the board,could it be a bios problem please?Comment
-
Re: Dell laptop with power problem
no broComment
-
Re: Dell laptop with power problem
if not then what may be the problem?because when i switch on the power U34 becomes warm and power led goes off again,can anyone at all help me withoutComment
-
Re: Dell laptop with power problem
pls can I get the board view and schematic for the mobo LA-6471P Rev 1.0Comment
-
Hi everyone,
I am dealing with the problem of turning on and off my Dell e7470 notebook.
The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.
The system does not turn on, there is no post.
I removed the RAMs and changed them, changed the battery, RTC battery, AC adapter, removed them and waited, tried again, it does not turn on.
The problem continues in the same way.
I tried to turn on the Fn key, nothing came to the screen.... -
Hi everyone,
I have a problem with this dell mini desktop, no LED lights up and there is no response from the front power button. It literally feels defunct, with no feedback whatsoever.
IPCML-CT motherboard rev.A00
CPU: Intel Celeron G5900T
I tested the power supply (19.5v correctly) but to be careful I also used an alternative power supply to test, nothing. No LEDs, no power on.
I tested the power button pins and they correctly measure 3.3V, so when I press the button or put a bridge with a wire, the pulse seems to be there correctly.
...06-06-2024, 08:48 AM -
hey guys, hoping for some pointers to repair an eBay bought "faulty" laptop.
Ill try and give as much info as I can.
Dell Inspiron 17 (7786) Laptop
Service Tag: 5J0NHT2
Bios: 1.9.0
When I received this , it would only flicker on the KB backlight for a second, then off and on.
Then it started getting weirder!
Sometimes when attaching the AC power supply, and pressing various pre-boot diagnostic keyboard keys... it did try to boot, in fact out of a hundred attempts, the laptop did actually boot into the Bios ! but never has... -
I have an LG Plasma TV 60PM6700 for the past ~12 years.
In the last ~3-4 months I have been having some issues.- Problem: It started with random picture disappearing (sound still worked).
Frequency: Happened about once a week.
Solution: Had to turn off TV wait a few seconds before turning it on again. - Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
Frequency: Happened about once a week.
Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve. - Problem: TV shuts down
- Problem: It started with random picture disappearing (sound still worked).
-
When I reflash again the bios of hoaca388 the unit powers on and the unit lives!!! Hooray!! All voltage in the coil 3.3v, 5v and 6.7v indicate charging are all present. including the cpu voltage , EEPROM and GPU voltage the unit is now alive, normal screen booting to windows and log in screen until I power it off. Then the unit never goes on even when pressing the power button in the keyboard.. Voltage reading 19v main , 3.3v VCC in IT8225E-128 and EEPROM VCC 0 volt and the charging voltage 0 volt.
Try to trace the power switch button goin to the power switch IC PU8803 (APL3533AQBI-TRG)...
Comment