Hi All
After few week . I received some part for fix my k2000
First I replace LM399H(U141) and TL1124(U139) . good have 7v and almost 14v
But problems "OVRFLW" still appear . nothing better
Second I replace all U166, U132, U138, U137 and MUX U163 . and check some diode CR105 108 around AD section but dont have any better
In AD in (TP105) measure 0V in all self test ( first 100.1 )
Have any ideal ? Only U165 I cant replace
Thanks all