I got a SE/30 which has a dead Floppy Drive and Hard Drive. But there were no vertcal bars (jail bars) on the screen. Things just going wrong and I don't know why it has vertical bars on the screen now.

I tried to reseat and replace RAM but it doesn't help. Any other possibilities for this problem?

Originally it has 8 256K RAM and I tried to install only four of them (same brand) in bank A (SIM1, SIM2). Later I replaced them with RAM from my dead IIci, same brand with unknown capacity (reported to be n*4=16MB)

(ref.: http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html#JailBar)

Now I can boot the Mac with the floppy drive I dug from the IIci... since the mother board of my IIci is dead.

Ideas? Thanks