I have the same printer and it turns on, but nothing beyond that and it can only be turned off by unplugging (as with the OP). There are a few things that might revive it like making sure the fuser temperature safety hasn't been thrown (do an Internet search on this; I did that but it didn't help me). Your printer like mine clearly has a circuit board failure. If you are willing and able to tear apart the printer and do the work yourself you can find (again through searches) replacements for the two main boards in the printer, and they would not be difficult to replace once you figure out the magic of taking the printer apart. However, you're probably looking at 100 to maybe 150 (or more) dollars for the two circuit boards and so you have to decide whether it makes sense to repair it. If you would have to have a repair shop do the work I'm certain you'd be wiser to take the printer to the electronics recycler and dispose of it.

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I am not delighted by that prospect but I may do that and be done with it. Why is it so hard for people to understand the issue here?

The problem I have had with my Samsung C410W (and from Internet searches I've done many others have had the identical problem) is that you press the power switch, the blue light around it comes on, and that's it. There is no sound, and you can only get the thing to turn off by unplugging it. Plugging it back in does NOT 'wake' the machine up, it does nothing.

The RJ45 (network) port is dead, the USB port is dead. If you connect the printer to your computer with a USB cable, operating system of your choice, the printer is invisible to the computer. You can't resolve this printer problem with software running on a computer that does not see the printer, obviously. I replaced the large board on the printer left side, no effect.

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I replaced the small board on the back right (with the USB and RJ-45 ports) and that fixed it. The board, JC92-02483A, is the central control board with the ARM chip. Samsung sold its printer division to HP a year or more ago.

I have exactly the same annoying issue. Spent a lot of money for toner and even sent it back for repair. They said it's working. When the printer setteled for a few DAYS it might come back once or twice - then going to deep sleep again. SyncThru does not recognize it and even through USB it's invisible for the computer. This really sucks. And why doesn't any technician or official at Samsung (HP as it seems to be.) admit that their is a BIG problem!

Anything I can say: keep your fingers off these machines! Hi, This is just a general check list, applicable to a lot of laser printers.

Remove the power cord. Open the front cover and remove and reinsert the cartridges. Before you close the front cover, (not quite sure if this is applicable to your model or not) check to see if there is any kind of 'safety switch ', which would be operated by the cover being closed. If there is it may be that it has become dislodged or disconnected. Ensure that the front cover is closed securely.

Reconnect the power cord and switch on the printer. Hi @davidprobasco. My advice is a common first step test.

It is called a Power reset (or refresh) and in a lot of cases it is surprisingly effective. This is done so that the equipment can reset by allowing the power to dissipate from the equipment and therefore to possibly restore any corrupted data settings back to their default values.

As I have no control whatsoever as to why my answer is rated up or who does so, (I cannot vote for my own answer, also the answer can only be rated up once only by the same person), one conclusion is that it must have helped some people to resolve their problem, at least enough for them to rate it as helpful. I have the same problem. The lights come on but it does not get recognized by the computer and it doesn't go into the warm up cycle. The blue light around the power button is on and this is supposed to indicate that it is in Standby Mode. The blue light doesn't light up on a successful start up. The only way to shut it down is to pull the power cord.