I don't know if you're following this thread, but there seems to be some indication that the problem may be related to a low temperature environment.
More details in later posts.
All very interesting.
I eventually got mine going again, and as long as it’s asleep, rather than ‘off’ altogether, it seems to wake up reliably. I had attributed progress to reinstalling the firmware – but the ‘temperature’ story makes sense as I assume there’s a small amount of heat, even when asleep (consumption is not zero…).
After the first few days of ownership I had decided that it didn’t like to be turned off, as even at best it would cycle several times (? Warm up???) before finally getting going (maybe from a room at 15 degrees).
It is very possible that when it finally wouldn’t get going at all, the room was just too cold….
I too had looked at the spec and saw the “5 degree upwards’ specification so had assumed that was correct.
Is your printer behaving now?
I note that you posted in December, so I wonder if the cause of your problem is similar in any way to what mine appears to be.
I seem to have had some success by increasing the room temperature. More detail in other posts on this thread, and one other user is now investigating along those lines.
Have you persuaded your printer to behave?
I know it's a while since you posted, but I seem to have had some success by changing the room temperature. More detail in other posts on this thread, and one other user is now investigating along those lines.
Have you checked the room temperature where you have the printer?
I started having the problem a few days before starting this thread, when the weather was getting colder, and, cheapskate that I am, I didn't have the heating turned up.
Roll forward to a few weeks back, and, partly out of desperation, I tried pointing a fan heater at the printer (but not so close as to cause localised heating of the side panels). Once the temperature got up to about 14C the printer would start after a few attempts, >16C and it worked first time, every time.
According to the User Guide (p221) the printer is supposed to operate from 5C up, although with caveats about print quality. It says nothing about failing to start at higher temperatures below the lower optimal limit (15C).
I'm finally getting a handle on the issue.
Power supply is fine (see a previous reply to you), but room temperature is a problem. With a room temperature of 12-14C the boot loop problem recurs, but heating the area with a fan heater so the printer is in a local environment of >16C allows it to start, as does when the whole room temperature rises to that value with either central heating or warm weather.
Failure to start while in the 12-14C range (possibly below, but the room never gets that cold while I'm using the printer) should not be an issue according to the Xerox® Phaser® 6510 Printer User Guide (Version 1.4 October 2019), p221, which gives a lower operating temperature of 5C.