Hi , got this scope from ebay for parts , replaced all smd electrolytics caps almost all errors gone excepr one regarding tp heat
but when i replaced nvram chip DS1650Y , getting more trouble ..cant read the old chip by programmer seems destroyed while
removing it then i download an backup and installed the new chip then booting but now i get eror message while try to check
the errors log ..when pressing menu before to arrive to Error Log menu it hangs on CAL never reach Diag/Err
SHIFT+UTILITY -> CONFIG -> IO -> CAL -> Diag/Err
and show this:
this the start up log banner:
then i found this opamp running very hot the measurement is different from schematic
compunents surrounding is fine no shorts .
if someone has working nvram pls upload . Thanks