hi,
Thanks for your earlier replies. i tried to solve theis problem.
Before taking any step further, first what i did was just shook the
instrument gently and opened it. I took out the A6 and A7 boards and
inserted them back in again.upon turning on the power supply now the
error message has changed to "B: ROM check sum err 004". Please
suggest how to get it fixed.
thanks.
kristo