MP4000 "Dead"

[tcs04]

Have a customer reporting that their MP4000AD sometimes loses all power. NO lights on the op panel, including the power save and that switching off the main machine power switch or even unplugging from the wall has no immediate effect.

If the machine is left off for a while it will boot and operate normally.

Whenever a technician has attended the machine is working and shows no service codes in the history.

The lead IS secure in the plug at the rear of the machine!

I'm thinking Power Supply but would imagine that would be a more frequent problem.

Ideas???

[aabarnes1]

If, in a perfect world you had another psu to try in this machine wouldn't life be fantastic! Seriously I'd check the customers mains. I had it once years ago with a Toshiba fax, same as what you said and it turned out to be really shitty wiring in the premises

[cobiray]

If you have one, put a line monitor on the outlet. If not, have them plug something else into the outlet (pencil sharpener, clock, back massager) to verify the outlet isn't going dead.

[kentala]

Check harnesses as well.A shorted rail can cause the power supply to shut down.This can give one the impression of a power supply issue.
Check you have no pinched wires.Check the rails when machine goes down to see if any are missing.Sounds like fun.

Good luck

[Jomama46]

If you have one, put a line monitor on the outlet. If not, have them plug something else into the outlet (pencil sharpener, clock, back massager) to verify the outlet isn't going dead.

This what I would do, its sounds more like its loosing power at the wall. Do this before spending any parts on it.

[Wishbone]

On the other hand having a dead MP4000 isn't such a bad thing.

[CableGuy]

I had a customer call me for a dead fax machine once.... On investigation, found a PC on the same extension plug. I asked if that worked, they said it had worked fine in the morning. Asked them to switch it on and it too was dead.... Followed this lead, which went through a plaster wall into the next office. At the end of the lead, I found the plug laying on the floor and a kettle plugged in in it's place.....
This won't help you much, but thought I'd share it with you.....

[Jomama46]

On the other hand having a dead MP4000 isn't such a bad thing.

HAHAHA, Roger that last transmission!

[tcs04]

On the other hand having a dead MP4000 isn't such a bad thing.

As the song says "Always look on the bright side of life...."

Written for these machines??? (you ALL know the words, don't you!?)

TEE HEE

[E Winter]

ground fault switch?

[jummamaster]

check power supply.

[stephend]

It looks like power supply problem. Could be a bad contact if your machine works OK when is cold and dies when starts to warm up.
BICU could be another source for this behavior.

[tcs04]

I've not been able to tie down exactly when the fault occurs. Several techs have attended and the machine is either working when they arrive, or responds to a reboot and will not then duplicate the problem. Having thought about this, the customer is not pushing too hard (yet) and being a school will have a holiday at the end of May, also they have a few MP4000's so I will swap the PSU when they are out and monitor to see if the fault moves with the PSU as a first step. Thanks for the input, I will update as I find more info.

[stephend]

I've not been able to tie down exactly when the fault occurs. Several techs have attended and the machine is either working when they arrive, or responds to a reboot and will not then duplicate the problem. Having thought about this, the customer is not pushing too hard (yet) and being a school will have a holiday at the end of May, also they have a few MP4000's so I will swap the PSU when they are out and monitor to see if the fault moves with the PSU as a first step. Thanks for the input, I will update as I find more info.

Check the power line. They are famous for having problems and multiple devices connected through cheaters. A power line monitor will be great but is damn expensive. When we have issues of this nature at my branch we rent one. SMC report does not showing anything suspicious?
Good luck

[tcs04]

Nothing on the SMC to my knowledge! may take a new "Kettle lead" in just in case thats duff.

I'm sticking this one on the back burner for now, only 3 more days at work then training on the Pro c900 (AKA BIG MOTHER F*****R) which should keep me busy for a while!