AO 30V Complementary MOSFET General Description Product Summary The AO uses advanced trench technology N-Channel P-Channel MOSFETs to provide excellent RDS(ON) and low gate VDS= 30V V charge. N-Channel:VDS=30V ID=6A RDS(ON) < 30mΩ (VGS = 10V) RDS(ON) < 42mΩ. AO datasheet, AO circuit, AO data sheet: AOSMD – Complementary Enhancement Mode Field Effect Transistor,alldatasheet, datasheet. AO Complementary Enhancement Mode Field Effect Transistor. AO Complementary Details, datasheet, quote on part number: AO

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Should ALL of the inputs on the primary side be shorted?

AO4606 Datasheet PDF

However with the video signal from my notebook PC the screen is solid bright white for as long as I care to look at it. SO this leads me satasheet ask the question There appear to be 6 pins on what i would call the primary side.

Originally Posted by chomot Post I looked into the fuse and connector advise and could not find any issues.

Thanks for the help and sorry for taking so long and the incomplete info. I have included a pic of the chip.

You really think the burnt spots are just due to bad solder joints? Right now, when i power it up Does anyone know of any issues with these. I replaced this cap. I thought the 2nd number was the part number. When i take a meter and measure the resistance from D1 to D2 i get a short A good method for checking a monitor with black screen and no power LED is to check the power supply outputs; typically 5V and 12V but this can vary. I did reflow the transformer connections. In the areas that are burned i see this chip.


ALL 6 pins are shorted If those voltages are not present, check the voltage across the large cap – it should be 1.

I started with the voltage across the big filter cap If that does not work I will ask if anyone wants a monitor for parts or repair as I will be outa my leage. One end to the circuit while the other to the transformer pin. I was looking at the signal board wich Adtasheet also included a photo of and doing some searches on it but I could not find any silver bullet type fix for it.

Can you tell from the data sheet if D2 and D1 are shorted? Show 40 post s from this thread on one page. How did you know the part number is AO?

AO Datasheet PDF, Alpha and Omega Semiconductor :

I did attach photos of the front and back of it. I checked ao4066 gate and drain, source and drain None of the buttons on the bottom work except the power on and off.


I have fixed about a doz monitors now with only the knowledge of replacing the PS caps and have had good luck with this as I have always found the bulged caps every time I opened one up.

I looked at a few other caps which were not replaced.

AO Datasheet PDF – ETC

Page 1 of 2. They were the SAMXON brand which i remember reading on here that these were “bad” so i replaced the other caps as dahasheet. I know this is an old thread but I figured since there is good advice here on the P I should see if my problem will add to it. So i will have to look a little deeper.

Measuring the primary side of the transformer. I found one cap “near” the big filter cap which was “bad”. I dataseet a P that powers up fine.