i took down my control panel when doing some building work and decied to test it before installing

ive put a brand new battery on it and link all the factory tamper links back and even temp link on cover switch

metered out the tamp circult back to cpu and it all looks fine

 

when putting power to it the speaker on the remote key pad go off and i cant reset it

on remote keypad the power and back ground led all light up and that all ,,,, the keypad make a nose when keys are pressed ad traced it all the way back to the cpu and it looks fine

 

try putting my code in and this does not disarm it

tryed the reset reset as soon as i plug it in 

tryed prog 9999 set 

no mater what i do it will not disarm

 

thank you in advance for any ideas

how old is it?

it ok been working on it all day and found a post that told me how to reset the nvm with a wire phew thanks anyway