Mains filter is not for emissions from the device, though there are some from the rectifier diodes, but more for conducted EMI, so there is no unwanted operation. Plus also a convenient place to put a mains fuse, so likely this was added as belt and braces, using a part they already had in the production line for other parts. As well you can see the socket inlet is class II, with no PE connection, though the filter assembly has provision to connect the 2 class Y capacitors to the PE terminal, but this is not connected. Showing a part used because it had one function they needed, fuse and cable terminations, but the rest was extra, however leaving it in also ensures that EMC compliance will be passed, with absolutely no issues, so far as radiated and received power line emissions.
AND since this unit dont run hot at all, you can also score those for other DIY projects, another idea : the PIC is also easy to reprogram , and the motor connectors got end switch signals, so this means you can reuse the board to almost anything needing two motors, and some sensor inputs, like a robot. endless posibilities
Hej Thomas. Jeg er helt ny til og experimentere med styresytemer og dc motore. Er det muligt og bruge motoren fra en af disse linak uden control enhed og med et 12v batteri?
I'm surprise to be able to find a video of such a niche product, vey nice, thanks Thomas 🙂 I wonder how much voltage that controller output? I assume 24V would be fine, although the label on the Linak actuator says 18V and the transformer says 22,7V. (I did some testing, I can actually move the actuator by as low as 5V@3A, going slow of cause).
Hi Thomas I have a linak CBD5006-02. When I plugin everything works fine. But after some seconds of no interaction with the desk the height is not shown any more and I can not move it up or down. Do you have any idea what the reason could be? It seems for me that it goes ina standby mode but can not come back. Thx 🙏🙏
Hi Thomas, I found your video because my adjustable desk is broken since a few days - it only drives downwards but the upwards function is not working. I already checked/measured through the DPF1K00 Buttons - they are working perfectly. So it must be something with the control unit. I have the CBD6SP00020A-009 - do you maybe have any idea how to fix it? I think due the buttons are good and also the motors driving downwards it must be something with the control box? Thanks in advance!
the buttons can be defective, the wire, connectors, but also the power supply, imagine it uses alot more power to go up versus go down, also its motor drive can be broken
sure, when you take this out for reuse, just score all connectors and all cables, and write down what color wires go to what, switches and motors and such, then it can be reused for many other fun things
Another item I also have in my workshop that I haven't yet taken apart, although my Linak motor controllers are 3 channel and an older generation (~2004). I also got them from someone who didn't have a need for them anymore, but with the big heavy desks still attached including built-in rack mounting.
cool, yes the linear actuators (motor units) are very desirable items for many types of DIY projects, many videos exist about them, so i did not see any point mention them again :-)
I would love to see an extended video guide on what to look for when those goes down, as i do have the same model bord and box as the one from video and its not responding at all, on first inspect it doesnt seem anything obvious.
Hi, I have a desk with the same Linak Controller. If i turn it up or down the motors work for like 1 second and then stop. Do you have any idea how i can find the problem? An answer would be great!
maybe the motors stop due to end stop detection, maybe just change all capacitors ? and see if voltage is nice and stable and now not trip the end stop, you could also have a fault inside a motor or gear, so it uses a lot too much current, this way the protection will stop it from moving.
@@TeardownOZ2CPU I have already removed the engines. The end stop that is implemented via the contact switch should not be the case. What is the best way to check whether I have a fault in the motor and whether it is drawing too much current?
I connected LEDs and the LEDs only light up for 1 second. Capacitors all look good. Do you still have any ideas? Is there a way to reset the controller or something similar? It would be great if you could help me.
@@tobiasg.9876 then it can be one of the power transistors that is shorted, this way when it try to move the motor , the system measure too much current, and stops, you need to measure power consumption
Hi, I came across this video looking for a solution for my own linak psu that I think is broken. The unit was on my giant standing desk. It is the 110v three motor version. After unplugging the unit to rearrange desk cables (not motor cables), the plug sparked a little at the outlet as if it were a large consumer starting up. The desk no longer responds to any command. I opened the psu and found the fuse to be good so idk what else it could be.
it is impossible to figure out where it sparked from or what you did, re connected something wrong and then blown it, is my best guess, nothing i can do to solve that from here.. sorry
Hi Thomas, great video, i wonder if you could give me some advise. ive been given a desk uses this controller, but unfortunetly it didnt come with the cat 5 linked dpa controller or the othe little cat 5 loop plug. I believe the dpa is basically a basic switch, but Im not sure of the pin connections to use with the cat 5 connetor. any chance you could give me some advise ?
yes, I also think it is just a switch, my idea : first voltmeter all combinations, then take a series resistor to limit current / potential damage, and then try to map the pin to pin switch function via a resistor, please comment your finding here
It is a long shot but I am asking, I got these and one did not go up, you hear a click. Now I hooked up another screen to test if the unit was broken and the actuator it seems broke the other unit... So down works, up does not. Does anyone know about this issue?
THIS model dont have relays so this one you dont hear the clicks, your model must be different type number, some got relays, so you hear click is a good thing, this means the relay gets its control voltage, but contact must be dead, replace the relay will most likely solve your problem
Hey just chiming in, I've also got this exact board with the power supply filter has a relay that's connected to the free header J10 you can see at 2:08 . My units works perfectly, except that after a few seconds after any input the relay clicks, and the whole thing browns out after a few seconds. I think this is some sort of eco mode to reduce power usage, but I don't understand how that is supposed to work if it just turns off it's own power supply. I'm gonna try unplugging the relay to see what happens! Edit: It immediately shuts off when removing the wire to the relay. I'll have to try tracing the board then.
Hi Thomas, very nice... i have the same board and any ideas to pimp up my desk. (control with arduino and add a memory function etc.) Do you think that the controller also has a height detection (e.g. calculated from the motor current) ? kind regards, Dirk
@@dirkdeeken661 no, it dont know its current height, it only know when to stop, when current is over a limit, from that point, you can only go the other direction
