Hello guys im repairing an xl7 turbo xt motherboard i tested all ics with tl76. And all memory with pico2 dram teater
Replaced 2 44256 ics
Burned an 267c64 with ruuds diag rom
Installed cga
When im boot i see on screen ruuds screen but test freezes
Checked lines on CPU
Reset clock ok
Adtess lines i have activity qnd after 3 sec cpu stop activity on adress lines
Replaced cpu but no luck
What i have to look
Thanks in advance