If you have a HP G60 laptop that is not powering on or has no display, you might have a faulty motherboard. The motherboard model is Astrosphere MCP MB 07241-5, which is based on the NVIDIA MCP77 chipset. This board has some common issues that can be fixed by following this guide.
What You Need
A Phillips screwdriver
A heat gun or a hair dryer
A thermal paste and a thermal pad
A soldering iron and some solder wire
A flux and a desoldering braid
A magnifying glass and a flashlight
Step 1: Disassemble the Laptop
Before you start working on the motherboard, you need to remove it from the laptop. To do this, you need to follow these steps:
Turn off the laptop and unplug the AC adapter and the battery.
Remove the screws from the bottom cover and lift it up.
Disconnect the hard drive, the optical drive, the wireless card, the RAM modules, and any other peripherals.
Remove the screws that secure the keyboard and the palmrest.
Lift up the keyboard and disconnect its cable.
Lift up the palmrest and disconnect its cables.
Remove the screws that secure the display hinges and disconnect the display cable.
Lift up the display assembly and set it aside.
Remove the screws that secure the motherboard and disconnect its cables.
Lift up the motherboard and take it out of the laptop case.
Step 2: Inspect the Board
Now that you have the motherboard out, you need to inspect it for any visible damage or signs of overheating. Some common problems are:
Burnt or bulging capacitors
Cracked or broken traces or solder joints
Corrosion or oxidation on the contacts or components
Short circuits or open circuits on the power rails or signals
You can use a multimeter to test the continuity and voltage of the board. You can also use a magnifying glass and a flashlight to examine the board closely. If you find any problem, you need to repair it before proceeding to the next step.
Step 3: Reflow the Chipset
One of the most common causes of failure on this board is a bad solder connection between the chipset and the board. This can happen due to thermal stress, mechanical stress, or poor quality solder. To fix this, you need to reflow the chipset, which means melting and re-solidifying the solder joints. To do this, you need to follow these steps:
Clean the chipset and its surrounding area with some alcohol and a cotton swab.
Apply some flux on the chipset pins and edges.
Cover any nearby components with some aluminum foil to protect them from heat damage.
Set your heat gun or hair dryer to a high temperature (around 300ÂC) and a low speed.
Holding the board at an angle, apply heat evenly on all sides of the chipset for about 10 minutes. Do not touch or move the board during this process.
Let the board cool down completely before touching it.
Step 4: Replace the Thermal Paste and Pad
After reflowing the chipset, you need to replace its thermal paste and pad. The thermal paste helps transfer heat from the chipset to its heatsink, while the thermal pad helps fill any gaps between them. To do this, you need to follow these steps:
Clean off any old thermal paste or pad from both the chipset and its heatsink with some alcohol and a cotton swab.
Apply a thin layer of new thermal paste on top of the chipset. Do not use 061ffe29dd