12-07-2014, 04:15 AM
Hello Folks!
i have a HP85A , and this not working. i check the voltages, and the bad are -5 volts
this drop to near 2 volts. also the i/o chip 1MA8 0101 and the cpu chip 1MB1 0101
goes very hot. y remove this chips and the voltages come to a good value of -4,98 volts. so i suspect as this two chip as bad.
anybody kown where i can get these chips? the ones in the board are ceramic with gold plate parts. i saw these chips in plastic carriers as udes in the hp85B is true this?
thanks in advance by the help , and sorry by mi very bad english.
jj
i have a HP85A , and this not working. i check the voltages, and the bad are -5 volts
this drop to near 2 volts. also the i/o chip 1MA8 0101 and the cpu chip 1MB1 0101
goes very hot. y remove this chips and the voltages come to a good value of -4,98 volts. so i suspect as this two chip as bad.
anybody kown where i can get these chips? the ones in the board are ceramic with gold plate parts. i saw these chips in plastic carriers as udes in the hp85B is true this?
thanks in advance by the help , and sorry by mi very bad english.
jj