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Software & tools

Everything in one place: the tests that run right here in your browser, the NoPowerFix apps, and the free tools technicians use every day.

Browser tests - run them now

Webcam testLive picture, resolution, frame rate Microphone testLevel meter, record and play back Speaker testLeft / right, tone sweep for rattles Keyboard testEvery key, stuck and repeating keys Dead pixel testFull-screen colours, backlight bleed Mouse & touch testButtons, scroll, multi-touch, dead spots iPhone panic log analyzerWhy it restarts - and which part Original parts checkApple's own diagnostics, step by step Android hardware testTouch, cameras, sensors, GPS Controller testerDrift, buttons, battery, firmware

NoPowerFix downloads

Laptop Diagnostic for Windows coming soon

One click tests the whole laptop and makes a PDF report: battery, SSD, temperatures, RAM, speakers, cameras, Wi-Fi and drivers. Free and Pro - Microsoft Store and direct download.

Firmware Tester for Windows coming soon

Open a BIOS or EC dump and see if it's complete, corrupted or locked - before you program it.

Android test app coming soon

Screen, touch, cameras, speakers, mics, sensors, battery, charging and signal - with a report. On Google Play.

Free tools we use and trust

PC & laptop

MemTest86 - RAM test from a USB stick
CrystalDiskInfo - SSD / HDD health
HWiNFO - sensors, voltages, temperatures
CPU-Z and GPU-Z - what's inside

Bootable USB

Rufus - Windows / Linux install sticks
Ventoy - many ISOs on one stick

iPhone & iPad

Apple Devices - restore and update on Windows
Apple Configurator - DFU restore on a Mac
3uTools - battery and part details

Android

Samsung Smart Switch - backup and software update

Board level

OpenBoardView - open boardview files
AsProgrammer - CH341A SPI programmer software

Links go to each maker's own page. NoPowerFix isn't affiliated with any of them.

Fixed on the bench 1/5

FixedDJI Mini 4K

Camera shaky, gimbal calibration never finishes

Fix: No hardware fault: the gimbal protector was left on at power-up. Removed it, calibrated - fully stable.

Full case on the forum soon

FixedSamsung Galaxy S24 Ultra

Liquid damage, no display at all

Fix: Cleaned the corrosion on the charge port and display connectors, repaired the display circuit, fitted a new screen.

Full case on the forum soon

FixedUSB flash drive

Stick reads only partly, most files won't open

Fix: Full read-only copy, file system rebuilt - 96 % of the files recovered.

Full case on the forum soon

Bench note

Test the RAM from a USB stick before blaming the board - one clean MemTest86 pass rules memory out fast.

Bench note

Check SSD health before reinstalling Windows - a failing drive makes a fresh install crash too.

How it powers on

Acer Nitro 5 AN515-54 · Compal LA-H431P · measured on AC

Adapter in+330.8 ms+3VLP → EC_ON → +5VALW
Stops here: Charger LED off or no +3VLP: adapter, DC jack, or a short pulling the input down.
Power button+92.2 msON/OFFBTN# → +3VALW · +1.8VALW · +1.05ALW
Stops here: Button does nothing: the EC, the button line, or the ALW regulator's enable.
EC wakes the PCH+20 msEC_RSMRST# → PBTN_OUT#
Stops here: RSMRST# stays low: an always-on rail never reported power-good.
Sleep signals+18.96 msPM_SLP_S4# → PM_SLP_S3#
Stops here: No SLP_S4# after PBTN_OUT#: the PCH, or the BIOS chip / its firmware.
Memory rails+1.49 msSYSON → +1.2V_VDDQ · +2.5V · +1.05V_VCCST
Stops here: +1.2V_VDDQ missing: the memory regulator, or a short at the RAM.
System rails+11.84 msSUSP# → +5VS · +3VS · +1.8VS · +VCCIO
Stops here: One S rail missing: its load switch or regulator, or a short on that rail.
Power-good chain+140.7 msEC_VCCST_PG → VR_ON → PCH_PWROK → SYS_PWROK
Stops here: Stuck before SYS_PWROK: a power-good is missing - follow the chain back.
Reset + CPU core+145.1 msPLT_RST# → +VCC_CORE · +VCC_GT
Stops here: Fans spin, no picture: RAM, the BIOS image, or the display path.

PLT_RST# released - BIOS starts

MacBook Pro 13" 2016 A1706 · 820-00239

USB-C inUSB-C PDCD3215 → PPDCIN_G3H
Stops here: Charger shows nothing: the CD3215 port controller, its firmware, or the port.
Charger12.6 VISL9239 → PPBUS_G3H
Stops here: PPBUS_G3H low or 0 V: a short on PPBUS, or the ISL9239 charger.
Always-on + SMC3.3 VPP3V3_G3H → SMC
Stops here: No PP3V3_G3H: no SMC - nothing on the board can respond.
S5 railsTPS51980ASMC_PM_G2_EN → U7800 PMIC → PP5V_S5 · PP3V3_S5
Stops here: SMC alive but no S5 rails: SMC firmware or reset, or the 5 V / 3.3 V regulator.
PCH wakesbuttonS5_PWRGD → PM_RSMRST_L → PM_PWRBTN_L
Stops here: RSMRST_L stays low: an S5 rail never reported power-good.
S4 + memoryLPDDR3 1.2 VPM_SLP_S4_L → PP5V_S4 · PM_SLP_S3_L → PP1V2_S3
Stops here: Memory rail missing: its regulator, or a short at the LPDDR3.
S0 rails + CPUCPUVR_PGOODPM_SLP_S0_L → PP3V3_S0 · PPVCC_S0_CPU
Stops here: CPUVR_PGOOD missing: CPU power stages, or the CPU.
Power-goodU7800ALL_SYS_PWRGD → PM_PCH_PWROK → SYS_PWROK
Stops here: Fans spin, no picture or chime: EFI ROM, RAM, or the display path.

PLT_RST_L released - EFI boots

iPhone X · 820-00863

Lightning in5 VHydra → PP_VBUS
Stops here: No charging current: the Lightning port, its flex, or the Hydra chip.
Chargerbattery levelTigris2 SN2500 → PP_VDD_MAIN
Stops here: Takes current but stays dead: often a short on PP_VDD_MAIN.
BatteryI²CPP_BATT_VCC · fuel gauge
Stops here: Gauge not answering: random restarts - the panic log shows it.
Power key → PMUalways-on 1.8 VB2B_BUTTON → PMU · PP1V8_S2
Stops here: No reaction to the button: the PMU, its always-on rail, or the button flex.
PMU buck railsbucksPP_CPU_PCORE · PP_GPU · PP0V8_SOC_FIXED_S1
Stops here: One buck rail missing: that rail is shorted, or the PMU.
Memory + NANDLPDDR4X · NANDPP0V6_VDDQL_S1 · PP3V0_NAND · PP0V9_NAND
Stops here: Restores fail or it loops at the logo: NAND or its power.
A11 bootboot ROMSYSTEM_ALIVE · BOOT_CONFIG → DFU / iBoot
Stops here: Not even DFU mode: power to the A11, or the A11 itself.
iOS + watchdogwatchdogAP_TO_PMU_WDOG_RESET
Stops here: Restarts every ~3 minutes: the watchdog fired - a sensor is missing. Read the panic log.

iBoot hands over to iOS

Samsung Galaxy A32 5G · SM-A326B · MediaTek

USB-C in5 V / 9 VVBUS → MT6360 charger · CC1/CC2
Stops here: No charging: the port, its flex, or the MT6360.
Battery → VSYS≥ 3.5 Vbattery → VSYS system rail
Stops here: Battery under 3.5 V: charge or replace it before anything else.
Power key32 kHz to APPWRKEY → MT6359 PMIC (U5000)
Stops here: Power key does nothing: the key flex, or the main PMIC.
PMIC rails±10 %MT6359 → 1.8 V · 2.8 V · 2.2 V
Stops here: A PMIC output missing: the MT6359, or a short on that rail.
Core PMICCPU / GPUEXT_PMIC_EN → MT6315 → EXT_PMIC_PG
Stops here: No EXT_PMIC_PG: the core PMIC, or a shorted CPU / GPU rail.
Clock + AP_GOOD1.8 VOSC5000 26 MHz · AP_GOOD
Stops here: No 26 MHz or AP_GOOD low: the oscillator, or the processor.
Boot ROMUSB: BROMMT6853 BROM → preloader
Stops here: PC sees only 'MediaTek USB Port': the boot chain stopped - storage or software.
Storage → Androidlogo → lock screenUCP4000 uMCP (UFS + LPDDR4)
Stops here: Stuck at the logo: reflash first, then the uMCP (storage + RAM).

preloader hands over to Android

Real sequence from this board's schematic. Where it stops tells a technician where to measure - tap a stage.