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Viewsonic N3251W tv, sound cuts off. Changing channel brings it back.

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I don't know if this was really a fix but I haven't seen the problem since I switched the sound mode from "user" to "soft" in the menu under the sound button on the remote. I'm not incline to go looking to see if I can recreate the problem under "user". Unless it reapears, I consider my problem solved.

Posted on Apr 23, 2008

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My viewsonic keeps changing channels which makes it impossible to use. We've unplugged it and everything. once you power it on, thats all it does. it continueusly changes channels. please help


The first thing to try is to see if a button is stuck on the remote or on the TV.
Remove the batteries on the remote and see if that helps. If it fixes the problem, you'll need to replace the remote.
If that doesn't help, look close at the buttons on the TV to see if one is jammed on. If changing channels continually up, then check the channel up button on the TV, if down then check the down button.
Worst case, you might have to take the back off the TV and unplug the cable feeding the external button panel on the TV and only use the Remote (for safety, rememeber to unplug the TV while doing any work on it).

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I have a n3251 viewsonic and only the sound is working,


With the tv on some channel (and sound working), take a strong flashlight or other light and bring it up to the screen. Do you see a faint picture? Sounds like the backlight has failed. Could be the power supply for it or the inverter board or one of the lamps. Are you qualified to open the unit and look around? Do you have a voltmeter?

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1 Answer

I have a Viewsonic flat-screen tv, it displays "menu locked" ??


Try holding the VOL + and VOL - buttons on the TV (not on the remote) down together. You should see a "unlocking buttons" message on screen. This might work. However, I tried it repeatedly, as told to by the Viewsonic "service" rep, and it didn't work for me. Viewsonic is ****, and so is its "service"!

Jun 06, 2009 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

ViewSonic TV sound but no picture


I have same problem (power light is on, and I have sound, but no picture ) and found that a small capacitor on back of power supply is blown. Seems to be common problem. But viewsonic doesnt stock. Part number is b-00005352 and im trying to find one too

Jul 29, 2008 | ViewSonic N3251w 32 in. LCD HDTV

2 Answers

Viewsonic LCD TV n3251w problem


If the TV will not turn on and you do not have a "red" power indicator light you will need to replace or fix the power module. This is easy to replace, approx 125 USD, but also can be fixed. I fixed mine for about 1.97 USD with parts from Radio Shack.

-jerry.nelson.nj@comcast.net

Jul 18, 2008 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

Viewsonic n3251w not power on


Do you have sound? If your have sound then the mains are working correctly but the High voltage to the screen is not. The screaming sound like the High voltage is shorted or at least drawing very excessive current. In either case the power supply for this unit is specific and made by JeanCo in Taiwan and good luck finding a supply. The LCD modules are made by CMO and they have an office in Califronia and might have a power supply.

Good luck!

Jul 04, 2008 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

T.V. abducted by aliens!


The controller eprom is in a fatal error and cannot be repaired. The pink indicates that a channel in the LVDS interface is gone and that cannot be repaired. This most likely is caused by a failure in the LCD module itself which then shorted out the driver on the main board. If your unit is under warranty, take it in as the LCD panel itself should be covered.

Good luck

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