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HP zt1000-series Inverter Repair |
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The HP zt1000-series has become one of HP's most popular notebook series for its combination of features and cost. However, many owners of these laptops have encountered a common defect - at some point, the LCD display will go dark. Shadowy images of the display will remain, indicating that the computer is still functioning. Many posts on various internet newsgroups indicate that this is becoming a commonplace problem on these laptops. In most cases, this is due to the failure of a part known as an inverter. The LCD screen is coupled with a backlight that shines through the screen to enable you to see what is being displayed; the inverter turns the low voltage into high voltage to power that backlight. When that inverter goes south, the backlight receives no power, and thus you see the dark, ghostly image. The LCD itself is fine; but many on various newsgroups have reported that HP will offer only to replace the entire display unit at costs approaching $600. Not only is the price exorbitant, its a wasteful repair. The failed inverter for many HP laptops can be ordered for a fraction of the cost (typically around $40 including shipping) from the HP parts website. Many people have posted requests for instructions on how to replace this part. I just undertook this repair myself, and thought it might be useful to document that repair, with photgraphs, and the steps I took therein to accomplish it. This repair effort was undertaken on an HP Pavillion zt1175 model laptop. These are not the sexiest web pages you'll ever see; just hit the "Next" and "Prev" links to scroll among the pages. DISCLAIMER: I am not a technician. These repair steps are provided for information only; there is no guarantee the precise steps will work for you on your or any other laptop. You assume all risk for use of this information. I will not be responsible for any damage to any computer arising from the use of this information.
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