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Acer( LCD Tv ) AT3201W no picture after sometime but sound is ok

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  • vs_bangera Sep 07, 2010

    Dear Sir / Madame
    If i donot get a response at the earliest i kindly request u to refund my money.

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  • Master
  • 8,619 Answers

Hi


Thanks for using FixYa. Hope you already know that this cannot be corrected through the MENU options. To resolve this issue you’ll have to open the back of the unit and check the inverter board which is the power supply source for the backlights. The issue can be a bad inverter board and/or the inverter board is not getting 20vdc from the power supply maybe due to the connector that has gone bad/loose.All this is only recommended to be done by someone who has electrical expertise and knows about the internal circuitry of the unit. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Sep 07, 2010

  • Rylee Smith
    Rylee Smith Sep 07, 2010

    Please check the response has already been sent to you.

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My lcd Tv Acer AT3201W made a loud pop which caused the circuit breaker to trip I no get no power to the tv


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Acer model AT3201W no picture?? Sound is great, everything is connected tightly. Checked the manual ...no help..


There are several things that could be the problem, as usual. However I did manage to get a set working with the following characteristics:
- Set powered on ok and displayed the Acer logo fine.
- All of the inputs had very low brightness and poor colour.
- The backlight was working and appeared bright.
- The picture was barely usable with brightness/contrast set maximum.

I figured the issue here was a loss of the picture settings in the eeprom in the unit. So I set about to find how to get to the factory menu to set these things. This assumes you can get a menu to display on the set.
To enter factory mode on the remote control press menu/menu/234/menu. You will see the menu displayed with some info in the top bar that is normally not shown.
Then on the front of the TV press Volume- and Channel+ at the same time and hold until the factory menu appears.
You may see that the RGB gain and bias values are low or 0.
If that is the case set the colour temperature mode to Standard and then adjust the RGB gain and bias values to the following:
R gain: 434
G gain: 482
B gain: 484
R bias: 270
G bias: 270
B bias: 264


Then set the colour temperature to Cold and enter the following values:
R gain: 434
G gain: 482
B gain: 484
R bias: 270
G bias: 300
B bias: 310


Similarly, for Warm adjust the values to:
R gain: 434
G gain: 482
B gain: 484
R bias: 300

G bias: 280
B bias: 264


Then, if this was the problem, the picture should be fairly adequate.

Hope this works for you...
BTW I must give some credit here to another poster who provided a similar solution to a different problem here:
http://www.fixya.com/support/t154524-tv_losing_its_channel_memory

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I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please post a comment if you need additional assistance so that I can help you further.

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Acer would not sell me a replacement power supply.

Note: I needed to solder wires the new power supply to the old one,
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