[Premium-Rx] spectrum Analyzer to use as a signal monitor

[Jacobi Ilan-BIJ001]

Hello dear group,

I seem to have a problem on a WJ-8888B-18.
It is A frequency display problem, not showing the whole range of the rx although it is receiving OK all. 
Could possibly be a defective A22 card ( the card with the battery). 
Does any one of  you know by any chance how I can remove this card from it's specially secured slot? 
It seems to be under two metal brackets which I have no idea how to release. 
Perhaps you have done it before and could help. 
Looking for a rapid way without tarring the whole rig apart.
Best Regards, 
Ilan, 4X6MU.