The red light is on but there is power to the unit. no visible

If the power light is on, then the unit is receiving power. The first thing to do is to check the thermostat settings and make sure they are set correctly. If the thermostat settings are correct, then you may need to check the fan motor and heating element for any signs of damage or wear. If there is damage or wear, then you may need to replace the fan motor or heating element. If there is no visible damage, then you may need to contact a qualified technician for further diagnosis and repair.

Based on the symptoms you described, it sounds like there could be a loose or faulty connection somewhere in the power supply of your TV. A power supply issue could be causing the TV to not turn on and the red standby light to not be on, and the fact that wiggling the TV allows you to turn it on and get the red light on, is a strong indication of this. Here are a few potential solutions to try:

1. Check the power cable: Make sure that the power cable is securely plugged in to both the TV and the wall outlet. If the cable is loose or damaged, it could be causing the connection issues.
2. Check the wall outlet: Make sure that the wall outlet you are using is working properly. Try plugging in a different device to the outlet to ensure that it is providing power.
3. Inspect the power supply: Inspect the power supply for any visible signs of damage, such as burn marks or loose components. If you notice any damage, it's best to have the TV serviced by a professional
4. Re-solder the power supply: It's possible that the problem is caused by a loose or broken soldered connection on the power supply board. This would require re-soldering the connections. This is a complex repair and it's best to have it done by a professional technician.
5. Replace the power supply: If the problem is determined to be a faulty power supply, it would need to be replaced.

It's always best to have a professional technician diagnose the issue as it requires proper diagnostic tools and expertise to know for sure what is causing the problem and provide a proper solution.

the main control board is fried from what you've described, you will need to dismantle it and remove the board (there will likely be visible signs of damage if there was a burning smell) relatively easy and cheap to replace

If you have the 5.3 standby it's the (main board)....sometimes when the main is shorted you won't have your 12 volt supply...

Sir try to check the fuse in the power supply may be damage. Remove the back cover of your unit but be sure to unplug the unit from the main ac outlet. Then look for the fuse, if the fuse is defective, before replacing it observe if the fuse is totally burned if you see this sign don't just replace the fuse it indicates that it has a shorted parts in the power supply common parts are the regulator and bridge type rectifier, but if the fuse is just broken or still you can see the wire you can replace it and try to check if the unit will power up. Good day and best regards.

from your suggestion, i think the problem is come from power supply unit, maybe the transformator was burned or damaged that make no power to the board
the other suggeastion is the power supply componen was damaged
try to check it

If a screw was bouncing around in the case it could have shorted something causing damage...

Make sure the power adapter is the EXACT one that is used for the unit.

Check the circuit traces from the power connector under a bright light. A short can sometimes "fuse" narrow traces burning them open just like a fuse.

If you haven't done so, check the power adapter with a meter to verify the voltage.

http://www.appliance-parts-warehouse.com

first examine part #166 and related parts for visible damage.
If the circuit board is burned out, then the above website is a suggestion for ordering.