@darryl123
SOME SUCCESS !
Retracing what I just said in case I was wrong, I was. The two cables to the display are both 10 pin and thus interchangeable. I had my end right, black and gray as they should but checking inside the controller they were swapped. Fixed that and I have a FUNCTIONING DISPLAY !
Now it's just a matter of following the setup instructions. So thanks for all the help, you kept me on track.
I recently inherited a somewhat disassembled T-rex from a friend who suddenly passed away. Lots of extra parts but NO documentation and I'm lost. My experience is several years on a CR-10 so I know my way around printing but I'm lost getting this one going. Can someone direct me to a source of knowledge? Too many questions to ask individually!!!!
Tried repeatedly to set up an account on Thingverse forums but maybe Firefox problems or something. I know I sound stupid but I'm only 82.
@darryl123
SOME SUCCESS !
Retracing what I just said in case I was wrong, I was. The two cables to the display are both 10 pin and thus interchangeable. I had my end right, black and gray as they should but checking inside the controller they were swapped. Fixed that and I have a FUNCTIONING DISPLAY !
Now it's just a matter of following the setup instructions. So thanks for all the help, you kept me on track.
@alankilian Again, thanks for sticking with me. I've determined that I have a Trex-2 converted to a -3, don't know if + or not.
The black and blue terminals on the interconnect board are for the heater solid state relay, which I don't have, apparently the heater controller has been used alone, not with the software heater control. That make sense? The display is shown in one of the pictures, it is labeled T-REX and has a cheapie red knob. Since the backlight works I assume the cables are connected correctly, there's not much you can do wrong when they are 10 and 12 pin connectors!
So the basic problem now is the lack of characters on the display. Of course it's possible that the unit failed before Phil died but that doesn't seem likely. Or it may be deeper than that, I've tried blindly turning the knob and pushing it, holding down while I turn, etc. Seems like I would stumble into something happening but not so far.
I'd like to go back and try the trex-2 controller but still don't see how/where to connect 24v. After all, I'm in Oklahoma and we'uns aitt tew teknicle.
@darryl123 And the one fan unit seems to be T-rex 3 https://www.formbot3d.com/products/t-rex-30-mother-board-111
But I still don't get any display!
@darryl123 The "two fan" unit seems to be Formbot Trex 2+ per https://www.google.com/imgres?imgurl=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0180%2F7671%2Fproducts%2FMotherboard_2000x.png%3Fv%3D1571262573&imgrefurl=https%3A%2F%2F3dprintersuperstore.com.au%2Fproducts%2Fformbot-t-rex-2-motherboard&tbnid=37_72u8nj0dFBM&vet=12ahUKEwiDxfrKmZvxAhVNRawKHUbCCbUQMygMegUIARC7AQ..i&docid=bebAK5TL0xDrFM&w=1935&h=1935&q=formbot display pinout&ved=2ahUKEwiDxfrKmZvxAhVNRawKHUbCCbUQMygMegUIARC7AQ
Above is the inside of the "one fan" unit. Note than there is a large green connector 24v input
Above is is the inside of the "two fan" unit. Note that there is no provision for 24v input as is shown in some of the web photos.
Above is the interconnect board. There is no connector for 24v unless it is the black terminal block but it is not labeled as such and I'm afraid putting 24v there will let the smoke out. (You do know that all this stuff doesn't run on electrons, it runs on smoke. Let the smoke out and it no longer works). So, at this moment it seems the "one fan" unit is the only choice since it has 24v input. But that doesn't get me any display (just the backlight) so I can't test extruders etc.
Of course that leaves the question, what is the two fan unit for?
Your turn
@alankilian First, thank you immensely for the help and sticking with me. I had found an assy manual for model 3 but it skipped over connecting the cables. Likewise a YouTube video. I had not v
found the dropbox files. Thanks.
Both of my controllers are different than shown in the Trex 2 or Trex 3 pix. One has the large green 24v connector and that agrees with the power supply so I assumed that is the right controller. It has one larger fan the other controller has two smaller fans. Neither seem to have all the needed connectors. So I'm still lost!
At least the two-fan unit says Formbot. That's something I guess, but the connections are all wrong.
Your turn.
@alankilian Not sure which T-rex. No model number visible. Probably a 3, included was the laser, several extra extruders, another CPU unit. The CPU I have installed has one fan, the unused one has two. Like asking how many fish in the ocean I know, but I sure appreciate any help.
@phaedrux No idea. The display backlight is on, the CPU fan runs, Two red LEDs are on, a blue one flashes monetarily on power up. Rather useless I know, but that's all I have.
I recently inherited a somewhat disassembled T-rex from a friend who suddenly passed away. Lots of extra parts but NO documentation and I'm lost. My experience is several years on a CR-10 so I know my way around printing but I'm lost getting this one going. Can someone direct me to a source of knowledge? Too many questions to ask individually!!!!
Tried repeatedly to set up an account on Thingverse forums but maybe Firefox problems or something. I know I sound stupid but I'm only 82.
