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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I have fixed oa4606 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.

Thanks for the help, I did add a few pics of the board in case you can see something I do not. I have a P that powers up fine. I also measured the diode as shown in the data sheet. They were the SAMXON brand which i remember reading on here that these were “bad” so i replaced the other caps as well.

Complementary Enhancement Mode Field Effect Transistor

ALL 6 pins are shorted I did reflow the transformer connections. SO this leads me to ask the question I replaced this cap. Using what you guys said i started probing around. How did you know the part number is AO?


AO Datasheet PDF – ETC

That typically has at least 3 different voltages, produced by bucking regulators. I started with the voltage across the big filter cap Originally Posted by Welchs Another quick question None of the buttons on the bottom work except the power on and off. Originally Posted by chomot Post I looked into the fuse and connector advise and could not find any issues.

If you have 5V and 12V, check the logic board. I guess I will replace the four uf x 25v, two uf x 25v and the one uf x 25v and see where that takes me. 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.

AO MOSFET Datasheet pdf – Equivalent. Cross Reference Search

I found one cap “near” the big filter cap which was “bad”. One end to the circuit while the other to the transformer pin. Does anyone know of any issues with qo4606. If those voltages are not present, check the voltage across the large cap – it should be 1.

I will get back to you with the results. I did attach photos of the front and back of it.

The rest of the buttons produce no set up or adjustment windows and I can see no datashee from my PC at all. Measuring the primary side of the transformer. Originally Posted by Welchs Could it be the transformer? I was looking at the signal board wich I also included a photo of and doing some searches on it but I could not find any silver bullet type fix for it.

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AO4606 MOSFET. Datasheet pdf. Equivalent

Thanks for the help and sorry for taking so long and the incomplete info. Originally Posted by Welchs You really think the burnt spots are just due to bad solder joints?

I looked at a few other caps which were not replaced. All it is is four buttons and an LED. Anyway this one has the good brand of Samxon for all but the big guy and that is a KM M but they rarly go bad from what I know.

I checked between gate and drain, source and drain Can you tell from the data sheet if D2 and D1 are shorted? 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.

Originally Posted by chomot Post 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. Should ALL of the inputs on the primary side be shorted? Right now, when i power it up