Question about Acer AL1916W 19" LCD Monitor

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The monitor on shows black screen only

I need a compatible Transistor NPN 40T03GP

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We sell a full parts kit that comes with both 40T03GPs and the pico fuse that needs to be replaced and the 2 capacitors, the kit runs $16.00 and free shipping. If you want to purchase one go to: , that link also has the repair guide showing where the fuse and caps need to be replaced.

Corporate Computer

Posted on Jul 15, 2009


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Amplifier. has transistor h649a which is the equivalent for that transistor

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In a CRT type monitor/TV the push-pull transistors are used in the vertical output section to provide both poistive and negitive signal amplification. By using a NPN and PNP transistor set you can amplifiy a signal that goes positive and negitive. A NPN uses the positive portion of the input signal and then amplifies that signal (pushing it to a higher positive signal level)(PUSH). The negative portion of that same signal to sent to a PNP transistor to amplify the negative to a more negative value PULLing the signal lower/more negative). The out puts of both transistors are combined providing a PUSH-PULL transistor set.
Now days the use a chip with all the transistors and a lot of the associated components inside. The LCD I worked on used FET's N-type and P-type (negative and positive).
I hope this helps.

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