What's wrong with my HP Deskjet 400 printer??

I'm using HP Deskjet 400 for few years, %26amp; I can say this one is a nice %26amp; tough printer...


However, few days ago I don't know why it become so hard to turn on this printer..


I've checked all the cable, %26amp; all just ok..


I've already tried too in different place, I thought it maybe the electric source, but I found the electric just fine...


So, if anyone please can tell me any thought, what's wrong...it will helps a lot...


Thank you...What's wrong with my HP Deskjet 400 printer??
Once you turn it on, don't turn it off. Or perhaps it is time to invest in a new printer. I know the older model HP's were awesome, but it is a 10 year old printer. Most are lucky to get a year or two out of one.What's wrong with my HP Deskjet 400 printer??
I don't know what you mean by ';hard to turn on';. Is the off / on switch stuck? Does it not respond to the switch being put in the on position?


More detail pls.
it is now time to replace it, it served you well,