Hardware, PMD, DF Player is not initializing

[nk25719]

Describe the Failure / Bug
The DF Player should initialize and display the menu, however the serial communication is not initializing therefor the module is noy responding if the SD card is found.

Device Under Test, aka DUT
Steps to reproduce the behavior:

1. Model Number: 20240421
2. Serial Number(s): LEB1
3. Location where failure / bug occurred: lebanon
4. Hardware configuration: connect the dfplayer to the board and the speaker to the df player and insert the sd card in the df player.
5. Extent of Failure
   ** Is failure intermittent? no
   ** Is failure fixed by power cycling? no
   ** Is failure permanent? yes

To Reproduce
Steps to reproduce the behavior:

1. Go to PMD_BOOTUP
2. Click on UPLOAD, THEN Serial Monitor

Screenshots
If applicable, add screenshots to help explain your problem.

Hypothesis

This is due to the insufficient voltage provided with 3.3V instead of 5V.