Question about Sony KV-36XBR250 TV

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No picture but only sound

I have a 32" LCD viewsonic TV. This morning when I switched on the TV, there is only sound but no picture. I checked if all the wires are in tact and it seems fine. I just have a cable box wire connected to the TV. There is a power cable .The coaxial connection is from the wall to the cable box. Please help!

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  • Sony Master
  • 586 Answers

Hi,
If you are expert and have experience then follow the instruction given below:

Check first Filament is lighten-up ? If yes then check ABL Voltages, if filament voltages not present check horizontal out put transistor. and check also safty resistances in surrounding area of H OUT Transistor.

And if you are not a tech person then i advise you to please contact any expert nearby, this problem bit technical.
Hope this will solve the problem.
Thanks for using fixya.

Posted on Jul 24, 2009

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6ya6ya
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Posted on Jan 02, 2017

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Download the repair book to this TV by net. It will have all details.

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Viewsonic 32 inch lcd t.v screen lights up for about 10 seconds and then goes off everytime,.pwer light is on and so is the sound,. but no brightness at all,.


Are you going to DIY repair and have all the tools needed?
See my pictures here:
http://s807.photobucket.com/albums/yy352/budm/VIEWSONIC/Viewsonic%20N3252W/

You need to check the fuse and caps in the power supply and at the inverter board.

Please read more here:
Basic LCD monitor and TV troubleshooting guide:
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
Parts: www.interliquidparts.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 and long life rating such as PANASONIC FM or FC series.

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1 Answer

Tv stopped working watched night before next morning no picture or sound


Inspect the power supply module for any bad caps with domed tops first.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20N3250W/

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

Basic LCD monitor and TV troubleshooting guide:
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 and long life rating such as PANASONIC FM or FC series.

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I have the above tv viewsonic n3260w and lost the picture but kept the sound any ideas what may have happened


Ur LCD inverter board is dead.This board help to get the backlight to the LCD screen to make the Tuner board get the tv signal throught.Replaced this LCD inverter board will get ur picture back.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long board in shape.

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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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if you still can see the menu then it might just be a source problem..if not then it needs servicing

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1 Answer

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If an LCD TV has sound but no picture do the following:

Use the source button to ensure that source is not set to the wrong input.

Try unplugging power cord for ten minutes, to ensure it is not a setting problem.

Check all the video cables at the back of TV.

Check Light /Color settings.

If problem persist and does not depend on external receiver or settings, then it is likely an internal fault.

If it has sound but no picture then one of the following parts is faulty, and must be tested and replaced:

Theinverter is the high voltage board that provides variable power to thebacklight lamp. This is the most common. When inverter is faulty youcan get no picture, or a very dim picture that can only be seen bypointing a torch light with a 45 degree angle on the LCD surface fromvery near distance.
The inverter must be tested by reading voltages with a multimeter.

The LCD ribbon cable/LCD display and connectors.
Thisis quite uncommon, but happens. If the TV had been hit or moved the LCDcable may have slipped out, or the LCD connector may be damaged.

The LCD controller board.
Thisis the board that controls the video signal, it is difficult to test,as there is need to read determined values on IC pins. To test thisboard you need to purchase a service manual and follow thetroubleshooting diagrams on service manual.

Input/Output Signal boards.
This are the boards where youconnect the video and audio cables, if a signal board is defective,then you may get no picture on particular inputs located on faultyboard.

If under warranty contact the manufacturer ringing the number on the user manual.

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

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Hi visceran,
I am happy to help, unfortunatly your main/input board is malfunctioning, it is a problem with the processor. I had a 32' Viewsonic on my bench last week with the same symptoms.
If the tv is new you should contact Customer Service asap, also check on the return policy of the store you bought it from. Many times it is alot easier to return to the merchant than to ship to repair facility.
Let me know how it goes and if you need further assistance.
Please rate this solution. Lone99star

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