Converter In-Rush Thermistors etc, UPDATE -4
UPDATE on 17 Nov, Update 2 on 22 Nov, Update 3 on 16 Jan 14, Update 4 on 19 Oct 14. --------------- In a recent thread there was mention of how you can wreck your gizmo (in my case a converter) ...
Forum Discussion
I only use the converter as a charger so it has only run for at most two and a half hours at a time a few times- maybe once a month over a year average. No idea if that is enough to accumulate heat wear and tear.
Ok, how fussy do you have to be installing those thermistors on the circuit board? Those 020s come with very long legs.
Last time, I just turned the board upside down and found the blobs of solder where the two legs go and drilled a hole (matching drill to leg diameter) in each place. Then I stuck the new legs in the holes and got it down to about the right height and snipped off the legs underneath sticking out, then heated up the solder and added some more as well to hold it.
I did see some instructions about how long to hold the soldering iron in place and temps etc. Also there was something about how long the legs of the thermistor were supposed to be for different values or whatever it was about and all that happy stuff. I ignored all that and just stuck them on.
Now it looks like there is enough of the previous legs on top that maybe I can just join the new legs with the old on the upper side of the board and get them stuck together instead of drilling out the circuit board. Does it matter how much "contact" there is, or is it sufficient to just make sure they are touching so there is contact?
I will do my best, but it would be helpful to know if I have to be perfect or it won't work at all. ( I did get it to work before, for a while anyway :( )
Ok, how fussy do you have to be installing those thermistors on the circuit board? Those 020s come with very long legs.
Last time, I just turned the board upside down and found the blobs of solder where the two legs go and drilled a hole (matching drill to leg diameter) in each place. Then I stuck the new legs in the holes and got it down to about the right height and snipped off the legs underneath sticking out, then heated up the solder and added some more as well to hold it.
I did see some instructions about how long to hold the soldering iron in place and temps etc. Also there was something about how long the legs of the thermistor were supposed to be for different values or whatever it was about and all that happy stuff. I ignored all that and just stuck them on.
Now it looks like there is enough of the previous legs on top that maybe I can just join the new legs with the old on the upper side of the board and get them stuck together instead of drilling out the circuit board. Does it matter how much "contact" there is, or is it sufficient to just make sure they are touching so there is contact?
I will do my best, but it would be helpful to know if I have to be perfect or it won't work at all. ( I did get it to work before, for a while anyway :( )
