| Symptom | Suspect Component | How Boardview Helps | | :--- | :--- | :--- | | | BQ24780S (PU401) | Locate pin 20 (20V), pin 24 (REGN 6V), pin 18 (LODRV). | | Shuts off after 2 secs | +VCCORE (CPU VRM) | Find the MP2949 IC. Probe PGood and EN signals. | | Battery not charging | PR408 (sense resistor) | Find R408 (2mOhm). Trace from BQ24780S pins 9/10. | | USB Ports dead | USB_PWR_EN (5V load switch) | Locate APL3511C (PU1001). Check FL1000 (fuse). | | Fan always 100% | SIO (IT8987) thermal probe | Find RT1 (Thermal diode read). Check R1307 pull-up. |
Integrated Intel Core i3/i5/i7 processors (usually 7th or 8th Generation U-series).
If you are currently troubleshooting an LA-E802P board on your workbench, please share the on your bench supply or any specific voltage readings you have taken. I can guide you through the next diagnostic steps or point out specific test pads to check. Share public link Dkl50 La-e802p Boardview
If this chip fails, the phone will typically not charge, fake charge (percentage goes up but battery voltage doesn't), or drain the battery rapidly while plugged in.
If the always-on rails are healthy but the power button does nothing, the issue often lies with the BIOS firmware or the Embedded Controller (EC). Corrupted BIOS or a failed EC chip. | Symptom | Suspect Component | How Boardview
Before we explore the specific file, let’s break down the nomenclature. The term refers to a specific printed circuit board (PCB) design, typically found in mainstream laptops from brands like Dell, Acer, or Lenovo (though often associated with Compal or Quanta reference designs).
The boardview allows you to identify all components connected to the +VIN rail. It helps isolate components connected to +1.05VPCHpositive 1.05 cap V sub cap P cap C cap H end-sub | | Battery not charging | PR408 (sense
Multi-layer boards often have massive copper pours (Ground/VCore). These block your view. In OpenBoardView or FlexBV, press H to hide specific layers or copper fills so you can see the traces underneath.
The (often seen as LA-E802P Rev: 1.0 or DKL50 LA-E802P ) is a popular motherboard model manufactured by Compal for HP. It is predominantly found in the HP Pavilion 15 series and some HP Gaming 15 variants.