Tuner for Spiderbox7000HD -Help needed

[vkumar]

Hello
My Spiderbox 7000HD tuner was found defective after few months of usage and since warrenty expired by the time the root cause of the defect.
Now can any one help or guide me in getting the tuner for Spiderbox 7000HD.
The tuner used SAMSUNG make DNDU1050111SD.

Thanks in anticipation