*Update
So I ended up switching to a new PCB:
Buy PCB/BMS/PCM - providing low prices and significant value. 11A Limit. For more information see item for specifications and datasheet.
power.tenergy.com
1. The results were that the screen did come back clearer, but there is still some noticeable static on the screen even when the system is at full charge. I re-wired the connections of the LED screen to the system motherboard and yet still no result on obtaining a perfectly clear screen.
2. A positive is that the batteries did begin charging again, and at a higher level since the switch though.
But, upon charging I noticed that only 1 cell was being used (as low as 4.03v) while the other remained at full charge (4.10v). Maybe that has something to do with the screen being still showing noticeable static?
Does anyone have an other suggestion as for what I should do to obtain a completely clear screen?
Could the size of the wires be the issue?
*Update
I read some other forums and they said that it's best to use 18 AWG wire for the voltage portion of the portable and 28 AWG for the cart relocation portion. I will make those changes in my wires and will see what happens.