Behringer EP2000 Fan Replacement
If you have a Behringer EP-series amp, well... you know all too well how loud those fans are. Now, imagine having nine of them come on at the same time! Sounds like a jet getting ready to take-off.
I've been putting this off for some time now, mostly because I have to remove them all from the rack. So, last night, I finally pulled out 7 of the 9 and replaced the fans. Still two more to do!
I purchased the new fans based on the recommendations from those who have come before me in this endeavor. I got 10 of them from Digikey, having one extra in case I ever need it. The fan used by others was P9739-ND, and that's what I've used here. It's been discontinued and now Digikey suggests P14751-ND.
The difference in sound is night and day! Huge difference. Now my dual Middle Atlantic rack fans (used to draw the hot air up from the front of the racks when the doors are closed) are what I hear.
Below is the step-by-step on the fan mod in case anyone needs it. Sorry for some of the fuzzy pics, but you get the point.
Of course - TURN OFF THE UNIT AND DISCONNECT THE POWER CORD FIRST!1) Top Bolts (4)
- Remove the four bolts with lock washers from the top of the unit.2) Left Side Bolts (4)
- Remove the four bolts on the left side.3) Right Side Bolts (4)
- Remove the four bolts on the right side.4) Rear Bolts (5)
- Remove the five bolts at the top of the back of the unit.5) Remove Cover
- Now lift on the back of the cover and tilt it forward. There are tabs at the front of the cover that need to be slid out of the front of the amp.6) Remove Fan Bolts (4) and Screen
- Remove the four long bolts that secure the fan screen and the fan itself.7) Remove the Fan Shroud
- Lift out the fan shroud from the front of the fan. It actually secures the fan in place with the four long bolts removed in step 6.8) Remove the Fan
- Lift out the fan.9) Cut the Fan's Power Lead
- Cut the power lead coming from the fan to the control board. I cut this about 1.5" from the fan to allow enough lead to work with on the other side.10) Prep Lead
- Remove about 3/4" of the casing on the power lead coming from the control board to expose the red and black conductors.11) Splice Connections
- I used the splice connectors below and they worked great. Connect the fan leads to the control board lead.12) Position Fan & Shroud
- Position the fan so that it pulls air into the amp. For me, this was having the sticker side of the fan face in. Make sure you are not pinching any wires. Place the shroud back in place and make sure you are not pinching wires.13) Mount Fan & GROUND
- There is a ground wire that goes between the fan and the shroud at the upper-left corner (looking from the back of the amp) of the fan. Don't forget to connect that. Mount the fan in with the four long bolts removed in step 6. Make sure all wires are neat inside.14) Replace Cover
- Align the tabs of the cover into the slots on the front of the amp. You have to tilt the cover to do this. The cover goes on the outside of the sides and inside the back.15) Test Fan
- With the cover in place, connect the power cord and turn on the amp to make sure the fan is working properly. When satisfied, turn off and disconnect the power.16) Replace the Cover Bolts
- Install the bolts removed in step 1 (top), then 2 (side), then 3 (side), then 4 (rear).17) You're Done! - Enjoy!Edited by RedTopDown - 6/13/12 at 8:17am