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

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ViewSonic Model. N2750W. turning on TV the screen powers on just for a "Blink" then shuts off, green led power on light stays on. I have noticed when the power cord for the TV is unplugged a spark emits from the ground connection. I suspect the PO1 power supply board SN-H 000247171some device is shorted to ground Please Help Thank you

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Yes, look for bad caps in the power supply module first.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20N2750W_MARCH%202005/

Spark from the GROUND prong? You may have to do the Gnd LEAKAGE testing on the TV.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Posted on Mar 28, 2011

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MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:

UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER LIGHT COMES ONFOR A MOMENT AND GOES OFF.

PRESS AND HOLD "device" and "menu"buttons on front of tv for at least 5 seconds and then release both together.


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1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

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SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES ANDTHEN TO GET IT TO REPEAT MORE YOUHAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


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Look at the power supply first; look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
If you do have the voltages then the problem can be the main controller board.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=n2750w
Please post back what you find

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