Question about AOC 4 Vn 14" CRT Monitor

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Burned resistor... no clue what is its value

My monitor AOC model 4 Vn got a short ciruit..a resistor burned out. the one near the box thing...i need to know the value of the resistance of the resistor which burned out so i can repair it..can i have a list of the values of the resistors?ill just see which resistor is missing in the list then buy it from a store

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BrYze,

take a look and get the resistor number printed on the pcb. i might be able to give you what you're asking for.

Francis

Posted on Sep 01, 2008

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I need to know the value of the Resistor "R1" in


Let us use a bit of logic to resolve this... I have an Axiom but it would be a lot of screws to take out to get to the part... so let us think about this. The resistor value starts with a "1" and we know it is 5% tolerance (gold). we know the resistor burnt up with likely 5 volts on it... Value could be 1000 ohms, however the voltages present (12 volts max) would NOT have burned up a resistor of 1000 ohms. The USB area is mostly 5 volts and across 100 ohms is only a quarter watt... not enough to really burn up a resistor... First thing is to MEASURE that the resistor s open... in spite of being burned, it MAY still be OK... these resistors now usually either open or remain close to their value. The resistor ALSO may be a fusible resistor intended to act as a fuse... Is the resistor open or not? is it near a resistance with a "1" as the first digit? If it is not open I suspect it is not all of the problem. In that case, look for a burned circuit trace on the board. If it is open, then MEASURE the voltage across the resistor with the power applied. If you find 5 volts, then it MIGHT be a 10 ohm used to limit the USB current to 500ma. Get back to me with your findings... I have unraveled many of these things...

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1 Answer

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Hello Gio, Hi, a burned resistor is usually caused by a shorted part like a semiconductor or regulator, there are two things you should do, find the value of the resistor and what caused the resistor to burned, for the Resistor, the value is usually written on the board, If not you can find the value on schematics diagram (which is usually hard to find, but if you have one, fine), and on the same working model (very remote a possibility). IF this are not available, you now need the assistance of a technician.

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1 Answer

I need a manual for a 22" AOC monitor


Suggest you go to AOC Support, Downloads>Manuals, and type the exact model of AOC monitor that you have.
Download the User Manual.

For example:

http://us.aoc.com/support/downloads

Product Category:
Left-click on the blue down arrow, to the right of this box.
Left-click on LCD Monitors

Model Number:
Left-click on the blue down arrow to the right of this box.
Scroll down, and left-click on the model number of your AOC LCD monitor.

After you have done this, a drop down menu will appear.
Where it states your monitor's model number, and the word - MANUAL, go to the right, and click on the white - Download.

The User Manual is in PDF file form. Give it a few seconds to download.


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1 Answer

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What is the serial number of your monitor!!

And which parts that's burned, can you tell me the exact locations...

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if its a 4 band resistor, use the following calculator...
http://www.dannyg.com/examples/res2/resistor.htm

if the resistor is a 5 band, use the following link....
http://www.sizes.com/materls/resistorcolor.htm

hope this helps!

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Sometimes you will need to reinforce the whole circuit with new soldering metal as well. Mass produced circuitry sometimes uses very little of the stuff or uses soldering metal of poor quality.

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