Proscan remote code for PLED1960A-F - Sylvania LC420SS8 LCD TV

This is somewhat bad symptom indeed. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

GE & or RCA should be your most likely universal remotes to operate the unit. Keep in mind that the universal unit most likely will NOT operate all the functions that the original transmitter did.

Try it and let us know how it works out

They make universal bases, but first I would suggest contacting Proscan: http://www.proscanvideo.com/contact-us.asp.

If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common set-up codes to check with TVs and other devices are given, in the order of the "device's brand name list" in alphabetical order. Pull up older posts. Surf the site with patience. Surf the sites by type in the brand name to your set, in its search box.
Electrohelponline

Call COX...They know them all! 760-599-6060 Go through the phone menu amd wait for tech support for cable tv

Set-up (Programming) procedure is too much to type in here, and is not practical and it will differ brand-to-brand remote controls. If you wish to get more; check the site linked here. It has set-up code list & set-up procedure to many popular brand remote controls. See it in "Mosaic" or "Magazine" view. It will make surf easier.
http://electrohelponline.blogspot.com/
http://remotesearch.blogspot.com/

I need programming instructions for proscan universal remote control. I have code.

Found these codes on the website for PROSCAN. www.oncorpus.com, for you model television.I hope this help you with your problem. UNIVERSAL REMOTE CONTROL CODE LIST
For Universal Remote Control brands listed below, please use accompanying Proscan codes
and refer to your Universal Remote Control User Manual for basic instruction for changing TV code to
operate Proscan model.
Proscan codes for Sony TV=8003,8012
Proscan codes for Philips TV=1005,1006,1007,1035,1064,1216
Proscan codes for other universal remotes=272,132,134,116,040,016,024,056,019,262