HP LJ 4250 Blank display

[alexkim]

after up grade firmware display (control pannel )keep say cycling power . when It power off & on , display is blank. engin is ok.
but I tried up grade firmware again
can't upgrade fimeware . do i have to replace Flash memory card (firmware)? or Is there any way?

please help any expert man.....

[prntrfxr]

Re: HP LJ 4250 Blank display

What firmware did you install? I think you may have installed the wrong one.

[alexkim]

Re: HP LJ 4250 Blank display

Thank you for reply mr. prntrfxr
here is firmware version If it correct this how can i do ?

Type:	Firmware
Version:	08_220_3 (13 Jan 2012)
Operating System(s):	Microsoft Windows 2000, Microsoft Windows 7 (32-bit), Microsoft Windows 7 (64-bit), Microsoft Windows Server 2003, Microsoft Windows Server 2003 64-Bit Edition, Microsoft Windows Server 2008 W32, Microsoft Windows Server 2008 x64, Microsoft Windows Vista, Microsoft Windows Vista (64-bit), Microsoft Windows XP, Microsoft Windows XP x64, OS Independent

File name:

lj4240_4250_4350_fw_util_08_220_3.exe (16 MB)

[prntrfxr]

Re: HP LJ 4250 Blank display

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=18972&prodSeriesId=412144&swItem=lj-25065-22&prodNameId=412146&swEnvOID=54&sw

Above is a link to the instructions, but I don't think you can install it with a blank display. I think the only thing you can do is replace the entire formatter. Use an OEM board if you are not sure of the vendor. If you accidently install a formatter from a 4240 it will downgrade the machine to 4240 speeds. Installing a 4350 board will bring the machine to 4240 level as well. OEM boards have been wiped clean so you can install it in any of those three without problems.