mortal kombat 4 help

[xrodney]

i have a mortal kombat 4 rev 1 and i took it out to dump the roms.  when i connected back all the roms and switched it on on the mk4 cabinet, it said that rom u10 is bad.  i have the cp of from the mk4 since i am restoring it, so i have no buttons.

i plugged the ocb on my mk2 cabinet.. when i switched it on, i was hering same strange noises, low low frequences sounds and there was no picture.

when i connected it back to the mk4 cabinet, nohing came up, not even the part where it checks the roms. 

i tried another board on the mk2 cabinet and it worked.  i do not know why the mk4 did not work on the mk2 cabinet.  it seems that i have lost my revesion 1.0 of mk4

 

can someone help me fix it?

[Q*Bert_OP]

Are all of the roms inserted the correct way?

Are the sockets in good shape?

Did any pins miss the socket(look closely)?

[xrodney]

every thing seems to be in place.

the major problem is, that after i conected it to another cabinet.. dedicated mk2.. the pcb now wont even start...  the led's switch on but nothing happens