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Blu-Ray discs cannot be played properly without remote control. You must have its original remote control. No universal remote control will work with Blu-Ray. Contact the nearest Vizio authorised service center to buy an original one. Download the user manual to your player. Click here to download it. It will give you specifiction of the remote control.
This is a common problem in blu ray discs, the reason why it won't play is because they play at a faster speed and demand a higher precision to produce the high definition signal required to play the program. The only way to fix this is to replace the whole laser pickup assembly which would not be cost effective.
The best advice I have to offer for the Vizio VBR120 is to replace it with a better player from LG, Sony or Samsung. I replaced mine with a LG BR540 and haven't looked back. With Vizio you get what you pay for, junk. There is no update for a Vizio VBR120.
Hi the link below will talk you to the manual
http://www.manualowl.com/m/Vizio/VBR120/Manual/157593
Hi I'm not 100% sure what dynex model you have however i am aware that not all models have the red/yellow and white composite plugs. So you best bet is to use an hdmi cable it will give you best picture and can be brought of ebay from £3.
If the tv as a scart plug connector, you can get a red/yellow/white adepter to Covent it to scart like the images below:
I have had this problem with the NEWER discs.. There is a change in Format that does not work on some of the older Players... has to do with Language and Technology used...