D52W19 RCA 46 inch t.v.

Just because you charged the battery it doesn't mean it is any good. Modern sealed batteries fail; just as you described, fine one moment and then nothing, they go open internally.

may have some loose connection inside the tv occur, or a tv circuit problem already

Hi Friend,
Please folliow the below steps one by one

Step 1: Turn on the TV

Step 2: Hold the ON/OFF Button for 10 to 20 Secs

Step 3:Without taking the hand from the ON/OFF button unplug the power cable connected to the wall outlet from the TV

Step 4:Without taking the hand from the ON/OFF button put the power cable back to the outlet

Step 5:Now take the hand from the ON/OFF Button and try to turn it ON again and check

If still you are having the same problem then please check the resolution configured in the Screen,try to reduce the Colour and the brightness of the TV

Even after that you are facing the same issue please check with the Display Card in the TV,

If you have any Clarification please feel free to contact us

Regards,
Ayyasam

internal / external selector switch on back of tv near inputs or setting in menu under settings or sound labeled - internal amplifier/ external amplifier.

No. You probably have a bad Cable Box.

A clogged air vent will cause the unit to overheat and not turn on.

Check capacitors cp150,cp114,cp120 if any of the capacitors are puffed up on top replace all 3 of them 2200uf 16v and (2) 220uf 35v

Does the set make any sounds. DOes the front green led light or flash when you try to turn it on.. if not then it could be as simple as a fuse, if it does flash then it can be many problems

tv chassis ctc 195 , hvt transformer, digital conv, power supply,

Is it in zoom 4:3 or zoom 16:9? Use the left/right arrows to change it.