My 37PFL5322D 37" LCD has no picture and no

Before opening the back of your set, pull the plug and allow to sit; preferably overnight.
There are nasty voltages inside that you want to avoid.

The main power supply is often on a separate board, will have larger-than-average parts on it, with cylindrical parts (mostly capacitors) and some larger squarish parts (chokes and transformers) and most likely a 'heat sink,' a finned aluminum structure with parts attached to it.
Look for a tag with a part number on it and have this available when you start looking for service or new board.

I suggest you contact the service center for your area and inquire about the cost of board repair or replacement. If the latter, keep the failed board since there are small shops (I was one before retirement) with the skills to repair these at a more reasonable cost.

These assemblies are nearly always only plugged into the rest of the set with clearly dissimilar plugs so incorrect connections are somewhat prevented.

If you are unsure of yourself, take several pictures of this area before disconnecting anything that you can then refer to if uncertain.
Remember, many assemblers of most of these just recently came in from small farming villages in Asia so assembly is kept simple.

Good luck- Before opening the back of your set, pull the plug and allow to sit; preferably overnight. There are nasty voltages inside that you want to avoid. The main power supply is often on a separate board, will have larger-than-average parts on it, with cylindrical parts (mostly capacitors) and some larger squarish parts (chokes and transformers) and most likely a 'heat sink,' a finned aluminum structure with parts attached to it. Look for a tag with a part number on it and have this available when you start looking for service or new board. I suggest you contact the service center for your area and inquire about the cost of board repair or replacement. If the latter, keep the failed board since there are small shops (I was one before retirement) with the skills to repair these at a more reasonable cost. These assemblies are nearly always only plugged into the rest of the set with clearly dissimilar plugs so incorrect connections are somewhat prevented. If you are unsure of yourself, take several pictures of this area before disconnecting anything that you can then refer to if uncertain. Remember, many assemblers of most of these just recently came in from small farming villages in Asia so assembly is kept simple. Good luck-

Thank you for the information. I will let you know what happens. Thanks again for all your help! Thank you for the information. I will let you know what happens. Thanks again for all your help!