C253 with black display and no initialization.

[habik]

Just orange light around Start button and panel POWER is green, and Orange + Blue light on front white panel of scanner base.

Tried FW flash = NG
NV RAM recovery = NG

Tried Monica FW = NG (Thanks ezzysi (http://www.copytechnet.com/forums/members/ezzysi.html))

any suggestions, going to dig through manual right now ..

[blackcat4866]

Does it come to Ready, then print, even with a blank display. Maybe the connector is loose.
(It's a bad sign that the firmware is failing.) Are you sure you've got the correct, current firmware? =^..^=

[habik]

I tried Konica, develop and olivetti FW and none of them are working toget the flippin display back to life, connector checked, tried it with all IU toners out and still DEAD

[emujo]

swap the 2 ram chips around, turn power on. If symptoms change (specifically lcd shows ready but is unresponsive), replace both DIMMS. I would try to reload the original KM firmware after you change the chips before you try to bring MFP up to full ready. Emujo

[Gaffers01]

Its the PRCB i have had this problem with C203 and C253.

[emujo]

I agree, it could be the PCRB, but I would at least take the RAM chips with me as this is the cheapest fix, and from my experiance, it's been about 70/30 in favor of the chips. EMujo

[scoonered]

I had this exact problem & it was the MFP board

[Darren King]

I had this exact problem & it was the MFP board

I have one in the shop with the same symptoms and it is the MFP board as well.
Darren

[habik]

I can't believe i have not finished this thread. It was one of the memory chips.Many thanks, Emujo.and to the rest, all the best with your machines.