Question about Computers & Internet
I want to learn how to repair motherboards on component level finding it deffcult to how do i get into it now i did repairing 20 years ago the coponents have changed printed circutes
It's virtually impossible to repair motherboards nowadays. Even if you could identify the component, they are typically proprietary and impossible to remove without sophisticated, extraordinarily expensive equipment. Even manufacturers don't repair them. You can usually buy a new one for under $100. It just ain't worth the effort.
Suggest you learn how to fix TV sets, stereos, and other consumer electronics. At least someone will pay you to do it if you're any good at all.
Posted on Dec 27, 2008
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Posted on Jan 02, 2017
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Aug 19, 2015 | LG Televison & Video
HP COMPAQ NC6000 NOTEBOOK POWER UP FAILURE
This sounds like Graphics Chip failure or Motherboard Power Management Fault. However some other potential, less serious causes of the symptoms you describe must be eliminated first.
First, remove the battery, then connect the laptop, in a battery-less condition, directly to the mains electricity and power it up to test the boot process again. If no image appears but the computer seems to boot normally and the Hard Drive activity light flashes, there might be a faulty or failing:
LCD Panel Power Inverter (LCD Screens only)
Cold Cathode Backlight (LCD Screens only)
LCD or LED Panel
All these items are testable and replaceable. To be certain, send the image from the laptop to an external desktop monitor of LCD TV by pressing and holding the Fn key and then pressing the Function Key with the image of 2 monitors on it (often the F4, F5, F6 or F7 key).
If no illuminated LEDs are visible, particularly a Hard Drive Activity LED, then the DC Jack's connection to the Motherboard might have worked loose or failed or the Motherboard's Power Management System might have failed.
If when you power on the laptop you see a Power LED but no Hard Drive activity LED and nothing on the screen, the Graphics Chip might be faulty. Faulty Graphics Chips can are indicated by a regular flashing or permanent "on" state of the Power LED at the front of the notebook when you try to power it up and can be repaired by Ball Graphics Array Reflow or BGA Reballing. These repairs have an average success rate but can be expensive and must be done by an experienced specialist with specialist equipment such as an Infra Red Workstation, an Oscilloscope and a Micro soldering Station. The fault can come back. BGA Reballing generally achieves better, longer-lasting results than BGA Reflow but can be more expensive. A reputable, specialist motherboard component level repair centre should be able to offer you a No-Fix-No-Fee Graphics Chip, Motherboard Power Management System or Loose DC Jack repair service and a 3-6 Month Re-repair or Full Refund Post Repair Same Fault Warranty. Sometimes the surface of the graphics chip is too damaged to repair.
If the Graphics Chip or Motherboard is irreparable or the cost of Graphics Chip or Motherboard Component repair seems expensive to you compared to the current market value of the laptop, then consider buying a new laptop, having any important data transferred to the new laptop, formatting the old laptop's hard drive, offering the working components (LCD Panel, Power Inverter, Hard Drive, RAM Memory Modules, Battery, AC/DC Adapter, Wireless LAN Card, Keyboard, CPU, CPU Heatsink, CMOS Battery, Lid Frame, Chassis) of the old laptop for sale on eBay or some similar website to recoup some cash. Dismantled, functioning, 2nd User Laptop Components have far more cumulative value than an assembled, non-functioning laptop, which only has low scrap, value.
Also, always use a surge protector for computer equipment, never directly to the mains.
If the battery cells are dead, you may also require a replacement battery.
I suggest you take the laptop to a repair shop for testing of the components listed above and/or a quotation for graphics chip repair.
I hope this helps.
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