Question about ViewSonic N3250W Television
Hello everyone, i hope someone out there can tell me what i should do. My problem with this tv is the black display with no sound or beep when i press the power button and the Green light come on(everything connect right). When i press the power button again and there is no Red light. I thought there should be a Red light(power light?) come come on everytime turn off tv. I already replace the backlight inverter but the problem still the same. I brought the power board to Moniserve to get it check and they said it fine. I connect everything correctly on back. Can someone please give me some advice. Thank you so much.........Thanks
Check out this website, it's got everything you need. I have to give all the credit to Alain, a brilliant guy in France who dug in and solved the problems. he gives instructions for the professional to fix the problem, but he also gives the sources for the power supply board to be purchased and for the little chip that causes most of the problems. I decided to take a risk and save some money and bought just the chip for $20 and very carefully soldered it in after removing the old one. The tv is fine a month later. The board comes out with no soldering, just some quick connectors and the back of the tv will come apart after you remove all the screws and the base by gently prying the back case from the front bezel along the sides of the tv. if you look closely, you will see the small cavities to pry from.
here's the website:
Posted on Aug 06, 2008
I just replaced ALL the capacitors on the power supply and it fired right up. The 3 1000uf caps were swelled up so I replaced those first and tried it but it still did not fire up. Then I decided to just replace them all and sure enough, it works just fine. I could test them all now that they are out of the circuit but to be honest, you shoudl replace them all anyway since chances are one of the others would go soon. For the price, replace them.
Posted on Nov 14, 2009
My answer is for the original post by tphan80. You have a damaged video board(av in/out). You may be able to repair the bad solders yourself, I tried which fixed it for a while but still had problems where it would not shut off, change channel, or volume.
Posted on Feb 15, 2009
A major issue with these supplies is q7, a small surface mount npn transistor. When this puppy goes bad, the supply pulsates, meaning your +5v line may run from 4.0-5.9 and it oscillates back and forth. It also causes I believe c36 to fail as well. Replace this transistor, I use any reasonable npn transistor and u should be fine.
Posted on Jan 28, 2009
I have the same problem with this tv i bought it 2 years ago rarely use it and now is blinking on and off
maybe i just get another one but not this brand anymore
Posted on Jan 24, 2008
So where can I find this board??? viewsonic web site says out of stock - so where else are they available? Has a specific component on the board been identified as being the cause for the issue?
Posted on Jan 08, 2008
I have the same problem and I sent the unit to Viewsonic and they said that they have to replace B-00005963. The cost of this part is 61.68 + tax and 250.00 to install it.
Posted on Jan 02, 2008
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Posted on Jan 02, 2017
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