Your EEPROM is defective in the main board, if you have the equipment and skill to change it that's the way to go but unless youve done soldering on small devices replace the entire main board. I'ts possible this TV has a main-power combo board
Use code search on your GE URC to find something that works. You may need separate codes for TV and DVD player. If a search through all codes stored in the URC fails, try a different one.
I dont see an LED back lights listed for that unit. This means it uses CFL lights. The link I am posting for this is a major parts supplier, as you can see the power supply for the back light is out of stock, you can use the info there to get the OEM part number and then search for it on ebay etc. Good luck because the unit is obsolete and you may end up having to get the board repaired. https://www.shopjimmy.com/catalogsearch/result/?q=1913+tdxb+
If you will go to your remote and look on the back, or just the name of it, you can look it up online and it will give you all the codes to the TV's it will hook up to. It's going to depend on which Polaroid TV you have too.