Hp 8440p power on but no display Solved LA-4902P.

LAPTOP REPAIR ZONE. YOU CAN LEARN LAPTOP REPAIR FOR FREE. FOR BIOS, SCHEMATICS, BOARD VIEW PLEASE JOIN OUR FACEBOOK GROPE : 🤍🤍facebook.com/groups/483833708998722/ TOOLS USED: SOLDERING IRONS Hakko station(no tweezers): 🤍amzn.to/3cgzMm8 Hakko station(works with tweezers): 🤍amzn.to/3ckBB1o Quick 861DW hot air station: 🤍amzn.to/2XfHMiO Micro Soldering Pencil: 🤍amzn.to/3gEGuFS Hot tweezers: 🤍amzn.to/2Xg2GhY CHEAP HAKKO ALTERNATIVES TS100 soldering iron: 🤍amzn.to/2MfZyw4 Recommended tips: TS-C4: 🤍amzn.to/36JOEs5 TS-KU 🤍amzn.to/3eyNyBZ PREFERRED SOLDERING TIPS Fine: 🤍amzn.to/3citYbC Flat: 🤍amzn.to/3diBMvf GPU wicking: 🤍amzn.to/2ZQZCKH Micro soldering tip: 🤍amzn.to/2ZTQ95C MICROSCOPES: Microscope: 🤍amzn.to/2XmA2Mh Barlow lens: 🤍amzn.to/3gD0EQp LED light: 🤍amzn.to/2TRU13e CHEAP alternative microscope: 🤍amzn.to/3eBeuRO SOLDERING/REPAIR SUPPLIES: Solder: 🤍amzn.to/2Ar4BHi THICK insulated jumper wire: 🤍amzn.to/2TRFHr9 THIN insulated jumper wire: 🤍amzn.to/2Xi1quz Kapton tape: 🤍amzn.to/3deGOsN Tweezers: 🤍amzn.to/3gKs0V9 Blades: 🤍amzn.to/3cgBGmM Freeze Spray: 🤍amzn.to/2Xk0mq9 Flux: 🤍amzn.to/2zP0TYf Solder paste: 🤍amzn.to/36IypLQ DIAGNOSTIC TOOLS: USB amp meter: 🤍amzn.to/2Mdo0Oy USB-C amp meter: 🤍amzn.to/3gBalyR On-Screen multimeter: 🤍amzn.to/2Mg1mW8 CHEAP multimeter: 🤍amzn.to/2ZS0UFn Bench PSU: TP3005P 🤍amzn.to/36NwvcA DC POWER SUPPLY : 🤍amzn.to/2WuQxp3 DIGITAL MULTI METER : 🤍amzn.to/3fLQpc8 SPI BIOS PROGRAMMER RT809F : 🤍amzn.to/2LlgIbn SOLDERING IRON : 🤍amzn.to/35WQsgT STAINLESS STEEL ESD TWEEZERS : 🤍amzn.to/3dDQqgv AMTECH NC-559-V2-TF Solder FLUX : 🤍amzn.to/3fLNLDq SOLDER LEAD : 🤍amzn.to/2yKp3mi MULTI METER PROBE LEAD : 🤍amzn.to/2T0fKoV AOYUE 968A+ SMD DIGITAL HOT AIR REWORK STATION : 🤍amzn.to/3fG9cFQ SILICONE SOLDERING MAT : 🤍amzn.to/2yVtyu2 DIGITAL OSCILLOSCOPE 2 CHANNELS : 🤍amzn.to/2X6PdYi SUBSCRIBE LAPTOP REPAIR ZONE : 🤍bit.ly/3dKY1K