Question about ViewSonic N2750w 27 in. HD-Ready LCD Television

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N2750W follow up

See my new note on the original post for my N2750W... it really seemed the first person answering the phone was pointing me in the right direction, and she was very unhappy when tech. support passed me back to her to find a service center without even trying to troubleshoot or confirm the problem. I thought the price on the power board might be worth a try as well. I found that one of three was probably a special version for europe that was free of certain hazardous materials, so that narrowed it down to just the two parts that were one number apart. Do you know if getting to the insides of the N2750W is simple enough?

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Yes it's easy for the most part. You'll want to lay it down on the LCD face (use a bath towel or comforter.) With the back facing up, remove the four screws inside the stand base and remove the stand. You can now access two other screws over the plastic back housing just near where the stand was, remove these. Now the tricky part. The back is just a shell or cover (no wiring connected to it which is good.) It is held on to the front half of the housing and LCD face by clips. Take off all the cable covers if you haven't already and use the square holes on the bottom center of the tv as a grip. I was able to get the bottom left corner started by grasping the area mentioned above while pushing in on the bottom half of the housing to separate the clips. You have to keep tugging up on the casing or it will just snap back in. Once you get a few inches started you can use an awl, ice pick or small screwdriver and slowly work the clips apart. Take your time and be patient. Once you have it apart you will see the smaller audio board and the power supply board. The main board is behind the shielded area in the center. I ordered the PSU on Friday from the viewsonic online store so I hope that does it for $68+tax and shipping. If not the main board is about $220.

Posted on Mar 29, 2008

  • 2000Intruder Apr 18, 2008

    Success follow up.

    So it wasn't the PSU board but Viewsonic Parts was kind enough to give me an RMA# and I shipped it back. After hearing about dc inverter problems on other posts and trying the "hold down both volume buttons on the top of the set at the same time check" and noticed that I got a big blue square in the center of the screen it was easier to see why it wasn't the PSU. Something was powering the LCDs blue pixels so obviouosly the 120V to 12V and 5V PSU conversions were happening. Wish I new of this button test before I ordered the PSU. So I ordered, received and installed the main board a week ago and it has been working just like new. I would highly recommend this to anyone comfortable swapping out motherboards or the battery in your first generation ipod. I just did this a couple of months back and this helped me in being able to remove the back case of the TV set off without damaging, or scratching it. This is probably the hardest step of the repair. See my other post for details on opening the LCD-TV. The main board is behind the shealding in the center back of the the screen. You have to unscrew the support screws that help reinforce the RCA connectors and remove the post screws from the VGA and DVI connectors. There are some cable connectors that also need to be disconnected. Again, if you've swapped out a motherboard before (other than a snap-in and screwless Dell) this should be no problem.

    There are two main boards listed on the web-site so call and confirm for your set. Mine was a B-00001786 Main Board priced at USD218.59 for an N2750W manufactured in Feb 2005

    Good Luck. I was glad to get my 2 yr old set back for about a fouth what I would pay for a new set.















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