Quick question while waiting for some replacement FETs to arrive -
What might cause the pins of Q3 to smolder and smoke, but not necessarily Q5, or the others?
What might cause the pins of Q3 to smolder and smoke, but not necessarily Q5, or the others?
Maybe they are smoking cause there is some kind or organic residue (flux maybe) on the pins of Q3 and not the other devices.
And by smoking - I mean overheating to the point of smoking.
Yeah - it's definitely a flux/solder smoke, so something's will cause those pins to heat up that much.
Yeah - it's definitely a flux/solder smoke, so something's will cause those pins to heat up that much.
This is why I say replace Q4.
It should be controlling the current of Q3 but it isn't.
You might have destroyed it some how while probing around.
It should be controlling the current of Q3 but it isn't.
You might have destroyed it some how while probing around.
Ah! Gotcha.
Well replacement transistors + fets should be trickling in. I'm going to move everything over to some clean PCBs. All this soldering/de-soldering seems to be causing the pads to lift.
Well replacement transistors + fets should be trickling in. I'm going to move everything over to some clean PCBs. All this soldering/de-soldering seems to be causing the pads to lift.
Do you know they're genuine? (My possible fakes measured differently too, but they were on the low side; 0.8V - 0.9V IIRC.)
I bought them from the member of this forum, not very sure that they are genuie or not
Hi,
Just want to know how accurate of the 1 ohm resistor value will give the correct voltage value? My resistor was measured 1.1 ohm, not exactly 1 ohm. But I doubt that a 10% difference will give a 30% error on the voltage? What do you think?
Just want to know how accurate of the 1 ohm resistor value will give the correct voltage value? My resistor was measured 1.1 ohm, not exactly 1 ohm. But I doubt that a 10% difference will give a 30% error on the voltage? What do you think?