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I think your right - it doesn't sound like it's working. I could always tell especially when touching the heating unit itself that it was putting out some kind of heat. You might check your power connections to the heater. One thing I noticed when changing mine was that it could be really...

When you touch the lines or the heater unit itself after operation, does it feel warm at all. Do you think it's doing anything?

Sorry for the delay. I first stopped the pump via the standard fill-up process and filled the entire loop to as about as full as I could get it. Since I had the inside cover off exposing all the lines, pump, heater and reservoir, I could tell about how full it was, so, I filled it up until I...

Unfortunately, I don't have a great answer for you. I saw the same issue in regards to my temperatures appearing to always be in range and the problem growing progressively worse until an override was required for almost every print, (with the only consistent exception being that it always...

Your probably right about my overthinking as it still could be something very simple. That said, my environment is pretty well fixed at 72 F and 45% humidity 24x7 and nothing else environmentally has changed that I can tell in the three years since we've had the machine. We have other printers...

Thanks - I think that's what I'll have to accept doing for now. I generally make sure its heats up the first time by checking the temperatures and then override the process for subsequent prints.

It seems my issue has changed in consistency to hanging now each time I try to print. With that said, there are two exceptions. Every time after a reboot, it will print after the expected, (normal), Head Temp Control time without the need for an override. Any subsequent prints, (regardless of...

So, I received and installed the new pump a few days ago and have seen some improvement, but, occasionally it still does get stuck in the 'Head Temp. Control' state for a short time. That said, the issue has improved and the temperatures always look within range, (even when occasionally...

I did the same today and ordered a new pump via overnight shipping. Hopefully it will get here quickly and that will fix the issue, but, I'll let you know what happens. - Thanks

Thanks for your reply. I thought the same as well and have been trying to take air out from the output port, but, so far nothing has changed. I also opened up the inside panel to expose all the tubing and at least based on what I can see, coolant is flowing. That said, I'm not ruling out air...

Hi - I'm having the exact same problem. Not sure if it's the pump or the heater, (or something else). I've listed my machines temps below, but, I unfortunately have no documentation as to what the ranges should actually be: Head 1a = 45 C Head 1b = 49 C Head 2a = 49 C Head 2b = 49 C Water...

I've had something similar happen and shaking all of the color ink bottles followed by an ultra level cleaning seemed to work. That said, it could just be a coincidence that this worked and it actually sorted itself out since it was my impression the colors never needed shaking, (just the...

Thanks - That is true. Overall, I've actually been very pleased with Mimaki 6042. Other than the two gas struts that support the main cover, this is the first piece of hardware I've had to replace after a little over two years of use.

I received the new board this morning and completed the replacement. This issue appears to be gone as I've been running now for more than an hour without the machine attempting to cycle the power, (which was occurring once every few seconds) . I had a new cable as well, but, I did not replace...

I have this exact issue on a Mimaki UJF-6042 MKII UV Printer. I took apart the display panel so that the PCB board is bare, (i.e. none of the plastic external buttons are touching the actual board), but, it still behaves as if the Power/End button is continuously being pressed. Unfortunately...