First post, by mt777
Hi
On startup keyboard diodes are blinking but keys not responding.
I desoldered accu and socket of rom and checked connections below them.
One trace was broken (A3 of the rom) . Other traces which go to A0-A9 of the rom are OK. I don't know what should I check also.
I don't know whats pinout of UM68663BF but pin #2 goes to the A0 of rom. #3 to the A1 and so on (up to A9).
Any ideas?