R/o filter not working

[Sense of nature]

This might not be the right forum & I apologize to the mods if there is a better section, but being a Newb @ this I thought it'd be a good place to start.
I'll start w/ I have been using an R/o system as my drinking water source for about 8 yr, so I'm not new to them .I've replaced filters & membranes several times ,no problems I picked up another 1 that I plumbed to use solely for my S/W
My problem is this: my system started to slow production down,It eventually just became a drip instead of a trickle so I ordered repl filters & a new membrane that was appropriate for the GPD flow.I rinsed everything as I have before , installed & bled the system.waited a few hrs for things to pressurize & work the air out & nothing, not a drip, trickle or flow coming out of the unit.
I swapped parts, cleaned everything, back flowed, re rinsed & started over, still nothing.
Just wondering if any one has suggestions, feedback, or had this happen to them as well
Thanks in advance
Sense ....

 

[austings]

Do you have enough pressure?

 

[bundybear1981]

+1 to pressure. Do you have a pressure gauge on your system?? I just had to add a pressure pump to my RO/DI system. The input pressure I had was down at 25 PSI to 35 PSI, I had zero output to minimal output from the system. With the pressure pump my input is now at 75 PSI (had to dial it back, it was hitting 125) and I am getting excellent output at 0 TDS.

 

[Sense of nature]

No pressure gauge yet, I cant imagine how the pressure would just drop? I'll install 1 & get back to the results.
Thnx