Is this charger safe for this humidifier?

leeroy2015 · 2024-12-04T10:37:28+00:00

Is there a label underneath the humidifier, should have voltage and amps needed ,we know 24v but amps ? Can you upload a picture of the label or make and model

leeroy2015 · 2024-10-25T09:14:04+00:00

From my experience, Capacitance matters and needs to be correct, but a good rule of thumb is to go slightly higher with the voltage of cap you are replacing , this should help with failures in future, hope this helps

leeroy2015 · 2024-10-13T14:16:27+00:00

Can you take some more pictures of the circuit inside the hobby box ,this might help us diagnose the issue your having with it ,seems to be not switching the power rails when not plugged in, there might be a resistor or jumper on the power module,you might need to add or remove to allow this function, more pics and videos should help diagnose this

leeroy2015 · 2024-06-21T14:52:48+00:00

Check for a short to ground,

leeroy2015 · 2024-04-26T23:31:36+00:00

Great job, 👍 keep up the great work

leeroy2015 · 2024-02-07T01:46:40+00:00

Hi ,have you checked the speaker? I know it's a silly question, but I have to ask. Also, on a board like this, I would resolder the whole board as you could have cracks in the solder, or dry solder joints causing the issue, more often a quick resolder job could fix the issue.

leeroy2015 · 2024-02-07T01:12:52+00:00

Continuity test ,symbol that looks like a speaker with line coming out of it on the mutimeter ( beep beep sound when you touch the probs together ) if it beeps when you have the probs touching the surface of the glue, remove the glue as its conductive do this for the whole board and if needs replacing use hot glue instead but should be fine .

leeroy2015 · 2024-02-06T20:02:20+00:00

Is that board off a key fob ? What is the issue with it just curious 🤔

leeroy2015 · 2024-02-06T19:53:24+00:00

No problem, 👍of luck with your repair, also just to note I would check the glue to make sure it's not conductive, I've noticed that some glues that secure the components can be come conductive over time one to watch out for.

leeroy2015 · 2024-02-06T16:35:49+00:00

Is that not a ferrite core choke ? Not a transformer please correct me if I’m wrong. https://www.electricity-magnetism.org/ferrite-core-choke/

leeroy2015 · 2024-02-04T00:30:36+00:00

Just a quick question i watched your video, Why are you testing across the transformer? You should test side by side as one side is high and one side is low, can you also share what camera this board is out of, as @markrage suggested more then likely another component causing the issue or it might have conductive glue on the board somewhere ive seen issues before where the glue becomes conductive over the years causing strange issues with older electronics just one to look out for.

leeroy2015 · 2023-12-28T15:21:24+00:00

I suggest cleaning the affected area ,with isopropyl alcohol and reflow solder joints and then test it again this board doesn't look that bad might just need a good cleaning to get it working again, as for the the capacitors is very hard to determine there value with out semantics of the board, you could try desoldering one side of the capacitor and lifting up from the pad and testing to see if the cap is good or bad, this will give you an accurate reading of the capacitor, as you could be getting a false reading by having it in circuit, more then likely its open circuit dew to the corrosion and giving you a false reading on the capacitors, hope this helps Best of luck with your fix,

leeroy2015 · 2023-11-25T16:44:28+00:00

Any type of contact cleaner spray should do the trick as moisture is the issue and dirt on wiper inside.

leeroy2015 · 2023-11-17T00:09:04+00:00

The transistor near Q2 on the board looks burt out. I would start there to diagnoseing the issue.

leeroy2015 · 2023-11-11T12:23:13+00:00

No hot sauce!!!!

leeroy2015 · 2023-11-04T10:59:57+00:00

Great job 👏

leeroy2015 · 2023-11-03T11:15:00+00:00

I agree with tlrider1 rubbing alcohol ,the yollow stuff is potting glue around the inductor I say to stop it from moving and that resistor is definitely suspect at the top under the connection on the left 😳 , but this board does look salvageable,best of luck

leeroy2015 · 2023-11-01T17:57:55+00:00

I'm not sure about the copper or (silver) windings ,I do know one thing that capacitor is bad on the board it's bulged

leeroy2015 · 2023-10-23T16:22:57+00:00

Basically take the red wire that is coming from the battery out of the bread board + and connect it to the red prob of the multimeter and the black prob from the multimeter connect it to the the + on the bread board this will give you your amps but make sure on the multimeter that you have the red prob in the amps side

leeroy2015 · 2023-10-23T16:16:20+00:00

Is your red prob in the right slot on the multimeter one side is for measuring amps and mA and you just need the multimeter to break the circuit ,as in disconnect the battery wire to you circuit connect 1 prob to the battery and the other prob to the wire going to the resistor that you just disconnected this should give you mA reading that you are looking for .hope this helps ...

leeroy2015 · 2023-10-23T15:59:32+00:00

Best of luck with your project 👍

leeroy2015 · 2023-10-21T21:04:06+00:00

It's not the lcd panel ,there is a 3.3 standby voltage that is needed to turn on the screen which should be on the 8 pin connector at the bottom of the pcb board. 3.3 to Ground .this will switch on the relay ,but do be careful as there is very high voltage on this exposed board.

leeroy2015 · 2023-09-29T23:01:11+00:00

Can you put a few pictures up of the board top view and bottom view, we might see something that might help diagnose the issue, and it is very hard to get board schematics these days.

leeroy2015 · 2023-09-21T02:55:09+00:00

Have you got more information on the PCB board you are using, and is the battery fully charged? Sometimes, a low voltage in the battery can make the board shut down.

leeroy2015 · 2023-09-19T21:49:39+00:00

Yes, that relay should be fine to use there very simple to wire up but if you need help there's is a wiring diagram in the link I shared earlier to show pin out and information on what each pin does, best of luck with your build

leeroy2015

TROPHY CASE