MX-M264N cooking DC power supply

[skookumchuck]

I had one of these cook so bad that it melted the fuser rollers together. The fuser heater actually came on as soon as the machine was plugged in. It seems like we might have another one like like that as well in a remote location. Has anyone seen anything like this? Just trying to see if this is a common problem with these.

[igi]

Re: MX-M264N cooking DC power supply

no not me

[Akitu]

Re: MX-M264N cooking DC power supply

I have 5+ of these machines working without issue. You're just lucky.

[harleyrider]

Re: MX-M264N cooking DC power supply

Haven't seen it yet. Looks like I have something to look forward to

[faxman28]

Re: MX-M264N cooking DC power supply

There is a bulletin about a coil failing on the power supply, (machines before mid dec 2012) but the machine doesn't turn on as a fuse goes out on the power supply. Only had 1 machine that had blown coil on power supply, others are running well . I would contact Sharp , to find out if there are any issues and if they want the power supply as this could turn into serious problem.

[skookumchuck]

Re: MX-M264N cooking DC power supply

I have seen that bulletin. Our first machine had the new style power supply and still cooked badly and did not blow the fuse. We have about a dozen of these in the field, all but one on ships. We can access these machines only briefly during the week and we are hoping they have a spare available at their warehouse here so we can bring it into the shop. Reported "bad burning smell and dead machine" virtually the same as the first one.

[Ri Webb]

Re: MX-M264N cooking DC power supply

I have a M314N doing the same thing. How do I solve it. I am not a sharp dealer.

[coopers1305]

Re: MX-M264N cooking DC power supply

Have you checked the line voltage?

[skookumchuck]

Re: MX-M264N cooking DC power supply

This is an ancient thread. Ended up sending the machine back to Sharp and getting a new one. Still was a pain in the ass. Put a new DC PWB and it still cooked the fuser rollers. Not sure, never found it, but there may have been a separate AC driver mounted to the frame or a shorted wire.

[Ri Webb]

Re: MX-M264N cooking DC power supply

Thanks

[what_moustache]

Re: MX-M264N cooking DC power supply

I've discovered the hard way (our shop smoked two fusers with this issue) that one of the plugs on the DC board doesn't plug in where it looks like it should. There are two nearly identical two-prong connectors on the board, and if you pick the wrong one, you send power directly to the fuser lamp as soon as you plug it in. It's surprisingly easy to do (even though it's red to match the harness) because the correct plug is hidden behind a heatsink. I think it's kind of weird that there is a live, exposed plug up front on the board, but that's the way they made it. I hope this helps out.
IMG_20170313_160310809 (1).jpgIMG_20170313_160339225 (1).jpg

[blackcat4866]

Re: MX-M264N cooking DC power supply

Good catch. =..^=