Durable Laptop Batteries
How to repair a dead battery charger
lectricgenius.blogspot.com The battery charger had both diodes burnt out. I replaced them with some salvaged/recycled diodes.
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Oh, I would guess 25-30 yrs old. The last half of that being a shelf? sitter, because it quit working. Right now I have current through the AC circuit breaker to the switch (the broken switch) but no hum from the transformer. I’ve still got to make the switch contact, & check voltages to be sure I’m getting current to the transformer. Haven’t gotten to that yet. I might get lucky & its just the switch, but I’m not holding my breath.
How old is said charger?? Are you certain that its transformer is putting anything out? That would be the first thing I would check.
Hey, thanks for the video! I’m fixin to jump into an old Snap On (Associated) battery charger that was given to me. Your video gives me (at least) something? to check for if there aren’t any broken / corroded wiring.
i seriously thought he was talking? about a psp charger
I have to same charger as the one in the video except that mine is digital. Mine doesn’t come on at all. No display or fan. What am I looking at? Bad motor or? something else? Thanks!
They were diodes out of an industrial power supply. ?
what? are those components you used?
It is hard as hell for me to diagnose stuff without having it in front of me. As far as what you should replace its impossible for me to tell you? and be right
Hi lectricgenius I enjoyed that video a lot as I have a? $200, 30 amp charger that charges for a few seconds and then shuts off. I’m not bright with electrons but I notice things are hot in there and no fuses have blown what should I replace? Any help would be greatly appreciated thanks.
aww look at? the dog dingaling
I would need to see a picture of it (or a wiring diagram) to know exactly what? you have.
good job man/ just wondering I have a similar charger with the dial selector broken which selects between trickle /medium and high as well as boost, what? type of switch or dial should I replace it with? all help would be greatly appreciated.
Ahhh,? thanks.
They weren’t so much of a? dead short as it was an “open circuit”.
I have a car battery charger rated for 15 amps, and I was only drawing about 2 amps form it and then BZZZZZ and my lights dim. I took it apart, and plugged it back in for a few seconds, unplugged, and felt the diodes, they were hot as hell. The meter doesn’t move, but I know the diodes are shorting as they come before the meter. I was wondering, when your diodes died, did they just turn into a direct short? I need to fix this before my dad? gets a little unhappy *to say the least*
dude, a rectifier is made out of? diodes
That is exactly what they are doing. I understand that it doesnt look like a normal diode. It is just a diode that I got from a job I worked at, and they had a higher rating than any I culd find. I just wish that you would learn to believe me, I am an electrical engineer for christ sakes, why would I lie to you or not know what I am talking about. It is a diode because to make 24 vdc you need to have 2 of them hooked up? as a half wave rectifier, like I have here.
No they are not. They’re diode, when put together like this, a half bridge to be precise. See I am an electrical engineer and did not misspeak, and you are correct,? diodes work as a “one-way valve”.
aren’t they rectifiers?? diodes are for restricting flow to one direction if im not? mistaken.
There is nothing in this world that I have found that I could not fix actually. Of course it helps that I am an electrical engineer and have the mind to fix other? things as well.
Question: Can you fix dead Netbook chargers? My netbook is near out of power and? I don’t want to buy a new charger.
No doubt, it is definitely hot out there. We got a rain last night and this morning,? which cooled things off for now– at least until the sun comes out and warms it up again, then it will be miserable muggy!
I should be out playing with my new toy, but, it is still pretty humid and hot out during the day here. I just got a lincoln MIG welder, 30 to 180 amp. Also got me a good dewault cut off saw, purchased some oxy-acetalene tanks when getting the inert gas cannister for MIG. Had torch set from years ago. And, I went and got a bunch of steel channel, angle iron and tubing yesterday from local metal supplier. I wish it was a tad cooler, I would be out there striking up an arc.?
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No doubt. I can do all of that stuff, and even more. See, my 1st? job was working on a drill rig, taking core samples for a road in Tennessee. After that I worked in a body shop, painting and repairing cars. I then became an electrician. Then eventually, I destroyed my back, so I went to school and became an engineer. While studying engineering, I bought a huge bulldozer, and fixed it up. Oh, I forgot to say I worked for my grandfather in high school, running bulldozers,& dirt pans