MX-7040 No Boot or Display

**xring1958** · 01-13-2017

We have a MX-7040 that wont boot up. No display, no home light the led that is beside the display that tells you when its ok to turn on is blinking and there are fans running. I checked the DC Power supply and Sub DC power supply both are giving me correct voltages but the DC PS had to be tested at other end of connectors since sharp hides the board behind other boards but they seem fine. I guess I will start tracing back from display and se hat goes. If any of you have seen this issue any help is appreciated as always.

**ZOOTECH** · 01-13-2017

Originally Posted by xring1958

We have a MX-7040 that wont boot up. No display, no home light the led that is beside the display that tells you when its ok to turn on is blinking and there are fans running. I checked the DC Power supply and Sub DC power supply both are giving me correct voltages but the DC PS had to be tested at other end of connectors since sharp hides the board behind other boards but they seem fine. I guess I will start tracing back from display and se hat goes. If any of you have seen this issue any help is appreciated as always.

Check the service manual where it shows the contents of the memories - most likely the SD or CF card will have the 'boot' info, reseat or replace it.

**JLSam** · 01-13-2017

Originally Posted by xring1958

We have a MX-7040 that wont boot up. No display, no home light the led that is beside the display that tells you when its ok to turn on is blinking and there are fans running. I checked the DC Power supply and Sub DC power supply both are giving me correct voltages but the DC PS had to be tested at other end of connectors since sharp hides the board behind other boards but they seem fine. I guess I will start tracing back from display and se hat goes. If any of you have seen this issue any help is appreciated as always.

It could also be the data security kit ROM gone bad.

I had one MX-5111 with MXfr33u not boot because of the corrupt ROM, and I had to replace perform an emergency firmware update.

Sent from my ONEPLUS A3000 using Tapatalk

**kentteam** · 01-14-2017

Originally Posted by xring1958

We have a MX-7040 that wont boot up. No display, no home light the led that is beside the display that tells you when its ok to turn on is blinking and there are fans running. I checked the DC Power supply and Sub DC power supply both are giving me correct voltages but the DC PS had to be tested at other end of connectors since sharp hides the board behind other boards but they seem fine. I guess I will start tracing back from display and se hat goes. If any of you have seen this issue any help is appreciated as always.

Perform emergency firmware update

**kentteam** · 01-14-2017

perform emergency firmware update

**jp74msj55** · 01-17-2017

SD card most likely problem.

**xring1958** · 01-18-2017

I have one on order will let yall know if it corrects issue.

**xring1958** · 01-25-2017

.
SD Card didn't correct issue have MFP PWB on order

**harleyrider** · 01-25-2017

they have changed the pwb rom. Be sure and order the right pwb or you may need a rom also. See MFP-TB-785. I ran into this.

**xring1958** · 01-27-2017

OK everyone thanks for your input. It turns out that replacing the MFP PWB solved the issue.
If everyone ends their post with the solution we may add to our recourses for troubleshooting.

Thanks Again