20 Most Recent Vizio VX20L 20 in. LCD TV Questions & Answers

Have you tried the user manual? There may be a setting in the menu indicating whether to use internal speakers or some other device run through say, a cable or HDMI output, or turn off sound for those using a cable input to the TV from say, a cable box, but the sound goes to a separate sound system. Also check that there is sound coming INTO the unit from your cable box if you have one and use RCA cables. If using HDMI input, there may be a menu item as well, to control whether to use input or not, as some people will have the cable box send the sound to a sound system instead of the TV.

If u had it apart and tried to turn back on and nothing happened then put a USB flash drive in back and power on then unplug

Hello
Reset the device to its factory settings. To reset it to factory settings, enter "Setup", select 'Reset All Settings", press [=>] button to reset the TV to its factory settings. All parameters, except the parential lock will be reset to it original factory settings. If you for got the pass code, just enter its factory reset passcode [0000]; Eventhough the set will report this to be wrong passcode, input [0000] once again. This will unlock the passcode, and you have to set a new passcode. OK.

The sound may be disabled in the menu settings. Check there first.

was the sound a poping sound or squealing sound? Sounds like the power supply. if you have experience - pull the rear panel and check the power supply for bulged/leaking or busted caps - if not replace the power supply using the part number from it. be careful though the voltages and amperage can kill you.

thanks,
michael

There is always a fuse. Usually on the back around the power cord. Unplug it (if you can) and see if the fuse is behind the socket where you plug in the power cord.

It may have the problem in the power supply/inverter board, you need to check for 12~18vdc power supply section for the backlights inverter circuits.
Boards: http://www.shopjimmy.com/catalogsearch/result/index/?q=Vizio+VX20L&stock=all

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: 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. Please post back what you find. Please leave rating if it helps.

The speakers are probably turned off in the Audio settings on either the Cable box or the TV menu. If you have a Comcast cable box i can tell you how to check those settings.

Hum Bars are caused by electrical interference. If you have other equipment hooked to the vizio such as a VCR, try unhooking the VCR and hooking cable directly to the tv bypassing the VCR. If you have a Cable signal amplifier hooked up that also can cause interference if it is going bad. Some tv's can handle the negative interference better than others. You could also try moving another tv into the room where the vizio is and see if that gets hum bars as well. In this situation the process of elimination is the best method. If it goes away using a different tv then it could be the vizio. If a VCR is the problem your best bet it to leave it unhooked. If an amplifier is the issue try it without the amp hooked up. Now with the change over to digital you may not need an amp and can leave it disconnected. If Not you can easily replace the amplifier. If these don't work I would suggest contacting your cable provider so they can properly assess the electrical problem and assist you in fixing the issue before causing and damage to your equipment.

You are going to need the main board (it has TV Tuner, source inputs, sound processor, etc)
http://www.shopjimmy.com/catalogsearch/result/index/?q=Vizio+VX20L+&stock=all&limit=100

http://s807.photobucket.com/home/budm/allalbums
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

HI u can find the memory eeprom and put a newone