Kula Sekar

Dears, I have an issue with the DPO4014B for quite some time.  I read back from Tek that the oscilloscope is out of service support. 
Actually, the front panel keyboard and controls, including the power button, are not working.  But the oscilloscope's main startup Channel 1 waveform seems to be updating fine, though we couldn't adjust anything.  I tried to reflash the firmware.  Same status.  I see probably the NXP microcontroller on the front panel board has issue. I replaced the chip and hoped to reflash firmware to load the corresponding firmware on this controller.  But the oscilloscope did not power up at all.  As power button is not working I couldnt make it to start.  so i replaced with old chip itself and somehow the output registers of that controller is stuck at power ON, the oscilloscope had powered on as before by default.  I would like to know how to flash the new keyboard/front panel NXP controller firmware. 
Secondly I thought i would write codes to mimic the front panel button presses from a PC using Labview.  I see that the oscilloscope is not responding to commands every time.  Sometimes it did respond, sometimes it did not and responded after many tens of seconds.  Then I closely noted the clock displayed on the front panel also froze once every 10 seconds for about 20 seconds.  When the clock is correctly counting, then the PC code is executed properly.  The same is with Openchoice software.  I used USB cable.  I tried the self test through the delayed software code, it threw 'Failed' error on Acquisition and Front panel. Would it be a problem with the battery?  Though the clock and date is maintained correctly at total power off but back offset from present time.  What else I could do to atleast make use of it.  It is very expensive for me at the time when I brought it, actually now also :D.
Could you please help in getting this back on some use.