Hi all.
I have a defective Hitachy li-on charger, dead, a 1 meg resistor was open and came from the high voltage to the switch circuit, there is an ic with 6 pins 3 on each side one where the resistor was is short circuit. ic looks like a zener array or so.
It is very small, need 25 x magnity to see what is on it.
I can read 72 =pin1,6
50 =pin2,5
94 =pin3,4
from up to down, do not now pin 1 so can be also reversed but look a readable tekst this way.
measuring it looks like diodes, because some smps have a startup resistor and a zener I think about this. or does er excist smps controllers with 6 pins?
picture is example not the charger, asking hitachi for help does not work, this company is quite environment unfriendly as most japanese producers are.
regards
I have a defective Hitachy li-on charger, dead, a 1 meg resistor was open and came from the high voltage to the switch circuit, there is an ic with 6 pins 3 on each side one where the resistor was is short circuit. ic looks like a zener array or so.
It is very small, need 25 x magnity to see what is on it.
I can read 72 =pin1,6
50 =pin2,5
94 =pin3,4
from up to down, do not now pin 1 so can be also reversed but look a readable tekst this way.
measuring it looks like diodes, because some smps have a startup resistor and a zener I think about this. or does er excist smps controllers with 6 pins?
picture is example not the charger, asking hitachi for help does not work, this company is quite environment unfriendly as most japanese producers are.
regards
