Question about ViewSonic N3250W Television

1 Answer

Cap placement on psm217-404-h-r power board with coresponding values picture would be nice

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Contributor
  • 29 Answers

This power supply board is also used in Viewsonic VX2835W. The main problem are 4 bad/defective capacitors and shorted legs due to bleeding of soldering lead (brownish color).

1. 22uf 400v
2. 47uf 50v
3. 1uf 100v
4. 22uf 35v

You can find them near the PWM IC controller (U601). Replaced all these capacitors regardless they look good. I pulled them out off the board and tested them with my Blue ESR and capacitor tester and found 3 were defective.

Next, you need at least 97% Isoprophyl alcohol and toothbrush to clean the soldering paste. Due to overheating on the primary section / HOT section the soldering leads tend to produce brownish paste which is causing the component parts to SHORT. Concentrate at the back of the board, especially at the U102 (16-pin IC) and Q202 by scrubbing these IC and transistor carefully. I used magnifier to make sure the legs are clean and shiny. Clean the rest of the back and some part on top of the board. Let it dry for 2 hours at least. I did 2 times this cleaning to make process.

On my VX2835W main board has 2 bad capacitors at C124 and C126. I replaced them and cleaned also the board with alcohol.

That's it. Good Luck.

Roan Mac
Computer Tech
Chapel Hill, NC

Posted on Nov 12, 2011

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Power board


The capacitor kit with the correct values and rating for temp, ESR and ripple current is available here:
http://www.ccl-la.com/catalog/product_info.php?products_id=327
There is pictures for the power supply board with the capacitors that need to be replace shown marked.
I hope this helps,
BuddyMc

May 01, 2013 | HP w2207 Monitor

1 Answer

Green timer light no picture


Also known as the Green Blinking Light of Death.
The repair on this is cheap but very time consuming and wit no gaurentees.
There are 4 Capacitors on the DM board and 4 Capacitors on the Formatter board that are more than likely defective and need to be replaced.
On the DM board the locations are C81A2, C81A3, C81B3 and C81B4. They will probably be swollen.
On the Formatter board the locations are C8F19, C8F21, C8F22 and C8F27. Also will probably be swollen. The values of all 8 capacitors are the same. 1000MF/16V. Replace with value 680MF/16V.
While you have the chassi ripped apart, check the power supply board as well. You should fine some swolle caps on it also. Replace with same value of the one you remove.
Now once all of this is done and you put everything back togeather, you have a 50/50 chance of success. I have found that many surface mount caps can also go bad on the formatter board. If your repair does not work, then replace all of the surface mount caps on the formater board that are 10 and 16 volts.

Good luck to you.

Mar 19, 2013 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

Vizio model VP322 HDTV10A It started as a clicking sound whenever the TV was turned on. It would click repeatedly until it finally came on. It progrssively got worst, then today it would not turn on at...


More than likely you have some swollen capacitors on your power supply. With a soldering iron, remove the swollen caps and replace with the same value. This should cure your problem.
The caps will be easy to notice because they will be rounded and puffed on top. Good caps are nice and flat on the top.
Remove the board from the set and unsolder the legs of the caps and pull them out of the board.
It is very important that you install the new caps the same direction that they came out. There is a line on them with - - - that side of the cap goes in facing the mark on the board.

Apr 19, 2011 | Vizio Televison & Video

1 Answer

Dots in picture (red, pink, etc.). Will go away after power cycling the set. please help.


is this a Samsung LN or LNT model?
if so there are two or three bad capacitors in the power supply...all of them located in upper right hand corner of the board between the heatsink up there and the wiring harness that jumps over to the main board. Look for the capacitors that have their tops buldged up.
Change them with same value
1000uf 10v or
2200uf 16v
or however they are marked (different size screen used different value caps)

Apr 13, 2011 | Televison & Video

2 Answers

I have a samsung 26" LN26b360c5d lcd tv. the unit acts to power up, makes the start up sounds, but there is no picture. I tried putting a flashlight to the screen to try and see any image. but saw nothing....


hi,
your lcd ip board (power board) capacitor had already exhusted.
got to replace the ip board. even if the caps look fine you would not know if the transformer coil is working ;)

Feb 12, 2010 | Samsung LN26B360 26 in. LCD TV

1 Answer

I have a Polaroid TLA-01511C 15 in. LCD Television that has no picture but does have sound. Solution #1 in this page says "a bad cap in the power board, the can like device will have a puffed up top from...


Radio Shack is your best bet. I replaced two 680uf 10v caps and one 1500uf 10v cap. It now works just like brand new. The caps I replaced had higher voltage values hopefully this will help prolong the life of them.

Nov 27, 2009 | Polaroid TLA-01511C 15 in. LCD Television

1 Answer

Picture doesn't come on but i sounds comes through good. I can turn it on then off and the picture comes in fine this only happens if the tv has been off more then 1 hour


you have one or more bad caps in your power supply board the board is the on where the ac cord connects to the caps in question are can shaped and will have a puffed up top the values are wrtten on the top if you feel comfortable rplace them if naot call a tech

Nov 24, 2009 | Televison & Video

2 Answers

I have 3 Polaroid TLA-01511C 15 in. LCD Televisions that have no picture but does have sound. Is this a common problem with this model?


I replaced three capacitors on my power supply board and the unit started working again, There was two 680uf 10v caps and one 1500uf 10v cap bad.

Nov 20, 2009 | Polaroid TLA-01511C 15 in. LCD Television

1 Answer

Half of screen blacks out


sounds like power supply caps or caps in the dm board
http://www.auctioncreations.com/wd62525a.JPG

The DM board is the one with the digital connectors on the back panel. If you already have it appart, you may as well check the caps on all of the boards. The caps that go bad are typically Jamicon brand caps in 1000 uF and 330 uF values. There are also a couple of 3300 uF caps in the PS that cause problems.


Mar 22, 2007 | Mitsubishi WD62628 62" Projection HDTV

Not finding what you are looking for?
Televison & Video Logo

1,646 people viewed this question

Ask a Question

Usually answered in minutes!

Top ViewSonic Televison & Video Experts

Cindy Wells

Level 3 Expert

6063 Answers

The Knight
The Knight

Level 3 Expert

76204 Answers

lubomir73

Level 1 Expert

4 Answers

Are you a ViewSonic Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...