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AOC P/N : 41A50-144 service manual U200-DATA Output, PANEL-POWER Circuit, Mainboard

Models: P/N : 41A50-144

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PANEL-POWER CIRCUIT

check R225 should have response from 12V to 0V When we switch the power switch from on to off

OK,R225 have response

NG

Check the PPWR panel power relative circuit, R223, Q200,U202(pin 5,6,7,8)

In normal operation, when LED =green, R223 should =0 v,

If PPWR no-response when the power switch Turn on and turn off, replace the U200-GMZAN1

Measured the U202 pin 5,6,7,8= 5 V?

OK

OK

NG, no Voltage

Yes

Check U202 pin 1,2,3,4= 5V

Replace U202 ( Nmos, SI9933)

NG

Check U304 relative circuit.(R905,T300..)

INVERTER Control Relative Circuit

Measured the inveter connector CN303 Pin 1=12V, pin 3 on/off control=5V (on)

NG, still no screen

Replace INVERTER to new-one, and Check the screen is normal ??

OK

NG

NG

Check the Bklt-On relative circuit, R315, Q304, R311, In normal operation, when LED =green,

R315 Bklt-On should =0 v,

If Bklt-On no-response when the power switch turn on-off, Replace the MCU

Replace INVERTER-module & Re-do white balance

OSCILLATOR BLOCK

Measured U201 Oscillator output R215= 50mhZ ?

OK, has transition

Measured X300 Crystal output R340= 20mhZ ?

OK

U200-DATA OUTPUT

Measured PCLK(L207) PVS,PHS (pin 73,74 from U200 ) Is there have any transition? Pclk around 47MHz to 57MHZ , PVS=60.09Hz , PHS around 67 KHz ??(refer to input signal=640x480@60 Hz 31k, and LED is green)

OK

NG,no transition

Replace Oscillator U201

NG,no transition

Replace Crystal X300

NG , no transition

Replace GMZAN1 (U200) or replace

MAINBOARD.

If MainBoard being replace , please do the DDC – content reprogrammed

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AOC P/N : 41A50-144 service manual U200-DATA Output, PANEL-POWER Circuit, Mainboard
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P/N : 41A50-144 specifications

The AOC P/N: 41A50-144 is a versatile and high-performing monitor that caters to both professional and casual users. With its sleek design and array of features, this model embodies the epitome of modern display technology.

One of the standout characteristics of the AOC 41A50-144 is its impressive display resolution. Equipped with a 1920 x 1080 pixels Full HD panel, it delivers sharp, vibrant images and ensures that text and graphics appear crisp and clear. The monitor boasts a wide viewing angle that allows for consistent color reproduction, making it perfect for collaborative workspaces or multi-screen setups.

In terms of refresh rates, the AOC 41A50-144 supports a 144Hz refresh rate, catering exceptionally well to gamers and media consumers who seek responsive performance. This high refresh rate reduces motion blur, providing a smoother experience during fast-paced gaming sessions or action-packed videos. Coupled with a 1ms response time, this monitor minimizes ghosting and lag, delivering a seamless visual experience.

The monitor utilizes advanced technologies to enhance the viewing experience further. One notable feature is AMD FreeSync support, which synchronizes the monitor's refresh rate with the GPU's frame rate, effectively eliminating screen tearing and stuttering during gameplay. This leads to a more immersive experience and ultimately gives gamers a competitive edge.

Another critical aspect of the AOC 41A50-144 is its connectivity options. It comes with multiple ports including HDMI, DisplayPort, and VGA, making it compatible with a wide range of devices. This versatility ensures that users can easily connect their computers, gaming consoles, or multimedia players without any hassle.

The AOC 41A50-144 also places importance on user comfort. It incorporates features like flicker-free technology and a low blue light mode to reduce eye strain during extended use. This focus on ergonomics allows for a more enjoyable viewing experience, regardless of the tasks at hand.

Overall, the AOC P/N: 41A50-144 combines high-performance, advanced technologies, and user-centered design. Whether for gaming, professional tasks, or entertainment purposes, this monitor stands out as a reliable and efficient solution that meets the demands of various users. Its features and specifications make it a compelling choice for anyone looking to enhance their display setup.