I have ( Apex digital LD4688 ) I neeed the code. Thank you.

T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
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. Faults to all LCD screen are similar, irrespective of its brand and screen size.

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

Refer its user manual for details.

Sounds like a vertical scan out section ciruit problem. Contact any service technician.
Gopakumar Gopalan Google

http://www.retrevo.com
Try this link.

No It has only analog tuner.

Hello there blondie1091 and a warm welcome to FixYa. I see your having trouble getting your APEX codes to work. Sometimes depending on the remote they either accept three or four digit numbers. Let me give this code to you just in case you don't have the right one. Please see below.

Apex LCD LD4088 Television

Four Digit Code
0156

Three Digit Variation
156

Give both of these a go and hopefully you'll be all sorted out. I hope you found this information helpful and good luck. Thank you for using FixYa.

The set is slow to respond but you must have a clear shot at the lower right corner of the set. That is where the signal is received. Our sofa cushiopn sometimes gets in the way and must be moved. When a signal is received the blue light comes on.

Just call Charter customer service and they should be able to assist. I just had to do it for a Samsung I have. That is a bit of an off brand, so the Charter remote may not have a built in code available for that TV. Good luck.

Here is the PDF Owner's Manual:
http://www.apexdigitalinc.com/manual/AT3208S.pdf