Toshiba es352 no display, fans run

[mntech]

No display, no panel response.
Power supply fan runs, hard drive runs, fuser heats up. No motors engage, scanner lamp doesn't come on, no network response, but network leds light up.

Checked fuses, swapped fuser, tried power on with doors open and hard drive disconnected, no change. Couldn't see anything obvious.

Customer stated they would have to reboot machine sometimes in the morning because the display wouldn't come on.

A couple of the control panel wires were flattened behind fax board, but still had insulation, I played with the harness a bit to see if the screen would flicker but didn't make a difference.

I'm going to try the harness and see if that is the culprit, but they didn't seem that bad.

Any other ideas?

Thanks

[Acme]

ive got a control panel if it turns out to be that. Ive had to change a few from customers trying to adjust them out of range.

[CCS]

Replace HDD, some need to do restore jig as well and current f/w

[canonbundy]

No display, no panel response.
Power supply fan runs, hard drive runs, fuser heats up. No motors engage, scanner lamp doesn't come on, no network response, but network leds light up.

Checked fuses, swapped fuser, tried power on with doors open and hard drive disconnected, no change. Couldn't see anything obvious.

Customer stated they would have to reboot machine sometimes in the morning because the display wouldn't come on.

A couple of the control panel wires were flattened behind fax board, but still had insulation, I played with the harness a bit to see if the screen would flicker but didn't make a difference.

I'm going to try the harness and see if that is the culprit, but they didn't seem that bad.

Any other ideas?

Thanks

Machine should cycle over to complete initialisation, try removing RAM & cleaning contacts or replacing.
Clean all Addon PCB contacts, reseat all connectors on all PCBs.
To eliminate Control Panel, unplug connector & boot up, machine should still cycle over or cause an Error beep.

[mntech]

Tried replacing power supply board, control panel and harness, memory. still doing the same thing.

Seems after the machine sits powered off for a while when turned back on the screen will come on, the machine will cycle but screen freezes at the picture of the copier, and then do nothing.

I got it into 05 mode once but it just sat at please wait warming up. After power cycle, display went blank again and only fans ran.

Any suggestions? I'm leaning towards the system board as the culprit, but my parts machine didn't have it.

Also I saw another post that a guy used a recovery jig to get the machine back up, but I believe his was due to a corrupt firmware upgrade

Thanks!

[blackcat4866]

Can you get into 49 mode to load firmware? I'd try that first. =^..^=