Quorum 128K

Hello caro So I finally decided to take care of the quorum 128 that was given to me. But something isn’t working out yet... anyway, I’m asking for help from more experienced people, and Thanks in advance everyone. In general, the BK06-1-4 board with minor modifications, kind of like a disk drive controller connected - in the upper right corner there is TM2, it looks like “not local”, not really yet I didn't understand her. ROM - 1) RF8a, apparently the main one, 2) 27128, written TRDOS. The clock is normal, the video works. For some reason the z80 has a constantly active reset signal. I don't think it should be like that maybe... I started to figure it out - instead of a resistor there was a diode, and a 1 micron conductor. I replaced it according to the diagram, it seemed to help. the screen is stable, vertical stripes (without ROM), with ROM - stable garbage. What signals should I check next? and what could be the problem? File: 1.PNG http://zx.pk.ru/attachment.php?attachmentid=3593