Generally speaking,The first step in repairing any laptop or notebook is troubleshooting the problem accurately. Even though the Gateway ADP-90SB AC Adapter was broken,we still have methods to repair it. The troubleshooting process always starts with identifying what works. If the problem is power related (whether battery or a question of the laptop not turning on) the first step is establishing that power is getting to the laptop. This means checking that the LED on the transformer brick is lit, and if it isn’t (or doesn’t have an LED), that it’s plugged into a good power outlet. You can check that by unplugging the transformer and simply plugging in a lamp. Some of the oldest notebook models have an internal transformer, so the line power (110 VAC in the U.S., 220 most other places) goes directly into the laptop body. The next question is whether or not any of the little LED status lights on the laptop light up with the power plugged in. Even the oldest models usually have a power good status light. If you have positive power status and the notebook simply won’t turn on, the next check is the battery. Some models of notebooks will not operate without a good battery installed, but most will, so Google up your particular model with a search like “operating without battery” and find out if your laptop will operate with a dead or missing battery. If the battery isn’t an issue and the laptop still won’t turn on one with the power good status light lit, it could be a switch failure, but it’s more likely a power regulation or mainboard failure. Troubleshooting power regulation or the motherboard requires test equipment or spare board to swap out, and is beyond the scope of these articles.
The basic designs of all the laptops are the same, even if one model uses an Intel CPU, another an AMD,a third a PowerPC and a fourth a low power Transmeta. A technician troubleshooting Toshiba laptops may be more like to start with the battery, as they are notoriously weak, just as troubleshooting HP and Compaq notebooks often begins with the RAM. However, it’s a mistake to approach any notebook problem with a preconceived notion of the outcome rather than following a logical process of elimination. Just because one model of Dell tends to blue blotches on the screen when it ages doesn’t mean that Dell kept manufacturing notebooks with the same problem. IBM and Sony and Apple laptops have generally been viewed as the higher quality than the more popular brands, but they all suffer similar failures due to overheating, wear and tear, and the occasional run of bad components.
For more information of ac adapters, you would go to www.udtek.com
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Article Source: ArticlesBase.com – Troubleshooting The Broken Gateway ADP-90SB AC Adapter
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