Sir pharaon . . . . .
there's short(beep) between the blue circle leds
The beep should have been on the internal LED leads of that optical isolator and what was its reading in millivolts on the meter.
The OI's other section is the dual junctions of a light detecting transistor junction . . .thus the reason for about twice of what I am expecting to hear that the LED is being.
I dont believe that you have ANY problem with that item.
Can you give us the numbering that 16 pin flat pack IC just above the central 10 Ω pwr film resistor.
I am sort of thinking of an LTA 301P. controller.
I HIGHLY suspicion that one of its internal totem pole driver transistors inside of it was blown to bits, as the original,( just being referenced), central 10 ohm resistor was blown up by the blown power FETS drain source directly shorting together and also sending their high voltage level up the 10 ohm unit to that driver section of that PWM controller IC.
I may have its reference schematic prepped tomorrow.
73's de Edd
there's short(beep) between the blue circle leds
The beep should have been on the internal LED leads of that optical isolator and what was its reading in millivolts on the meter.
The OI's other section is the dual junctions of a light detecting transistor junction . . .thus the reason for about twice of what I am expecting to hear that the LED is being.
I dont believe that you have ANY problem with that item.
Can you give us the numbering that 16 pin flat pack IC just above the central 10 Ω pwr film resistor.
I am sort of thinking of an LTA 301P. controller.
I HIGHLY suspicion that one of its internal totem pole driver transistors inside of it was blown to bits, as the original,( just being referenced), central 10 ohm resistor was blown up by the blown power FETS drain source directly shorting together and also sending their high voltage level up the 10 ohm unit to that driver section of that PWM controller IC.
I may have its reference schematic prepped tomorrow.
73's de Edd
