Hello
I got a homebase 2 and my dog chewed a bit the power cord and the homebase stopped working.
So I first thought the power cord was out so I decided to cut it and resolder it nicely and the power cord was working again because I measured a 12v output.
But my homebase was still off and no blue light flashing, not even a red one. I tear down the homebase and I mesured some 12v on the pcb of the homebase so it has power. But I don’t know why it doesn’t turn on. I supposed it’s a power issue and I wonder if I can fix it
I would ponder on something has shorted out ~ blew a fuse.
Did you try the reset button?
Yes I tried to hold the reset button but nothing has changed, I wonder how can I spot the faulty chip
I don’t know what the board looks like but, I would assume they’re using a surface mount chip fuse.
They’re difficult to visually see if they have blown. Magnifying glass may help.
They should be located near where power comes in.
When you tested the power cord for 12 volts DC, the inside of the barrel is positive correct?
Do you have another power adapter available to double check? Needs to be 12 volts DC with a minimum of 2.0 A.
Yes I put my red wire tester inside the barrel so it’s positive and it’s still the genuine power adapter so it is a 12v 2A but I’ll try that.
And here’s the inside of the pcb, the black thing is the power inlet and do you think it’s the thing I marked with the arrow ?
I’ll try to do a continuity test on each of these
Update :
I think the fuse is the one in blue and it passed the continuity test
The two others in red are the only two that passed the continuity test, does that mean they are faulty or all the others are ?
Edit : I saw somewhere that if those capacitors have full continuity they are faulty, so I need to replace those but how can I do this
I’m more of a tube repair guy. I know just enough to get me in trouble with the modern stuff.
The capacitors will show continuity because they have a charge in them, after you test them a few more times they will have none. That’s with an old school capacitor and an analog meter but, if they still show continuity then they are bad.
For the surface mount capacitors I don’t know what they should read.
What I circled in the photo is the fuse.
Is the HomeBase still under warranty?
Unfortunately the homebase is not on warranty.
The two red capacitor show constant continuity so they both faulty and the blue resistor shows constant continuity too, is it faulty too ?
I should test continuity on the fuse to see if it needs to be replaced also.
And it seems that the SMAJ didn’t do his job well… as it could event protect the board from bad current
The blue resistor will show continuity. It’s a 75 Ω resistor.
For the capacitors you would need to remove one side from the board to test it.
And as far as knowing the value in pF uF would need to research it based on its color. SMD capacitor.