Smd fuse replacement

[audiofreak19]

Re: Smd fuse replacement

It's gonna be hard to measure the voltage of the cap cause there are a ton of ribbon connectors and regular harnesses that plug into the main board and the cap is on the bottom of the board.

[paulstef]

Re: Smd fuse replacement

Then try to find out where the traces are going to. I bet you can find a spot which easier to access.

[audiofreak19]

Re: Smd fuse replacement

Also when I replaced it I just looked for one similar in size. Cause it didn't have any markings on it.

[paulstef]

Re: Smd fuse replacement

Mmh, not good.

I bet there other caps in parallel with that one but elsewhere on the board. Worst case I would remove one of those, measure them and replace the damaged one with the same value. I'd say they could be anything between 100nF and 1uF.

[audiofreak19]

Re: Smd fuse replacement

How do u measure what size cap they are.

[paulstef]

Re: Smd fuse replacement

Often multimeters have a capacitor measurement option built in. In theory you could also estimate it by connecting it in series with a resistor and measure how long it takes to charge to a certain value.

It won't give you good results for a small capacitor value and no scope, since then you will have to choose a high resistor value.

You could also connect it in parallel with a known inductance, excite it with a voltage and see what it's resonance frequency will be. Still needs a scope. :-)

[audiofreak19]

Re: Smd fuse replacement

so i looked at the circuit the cap was on and I cant seem to completely trace it. But i metered it and it showed 1.87v. I checked the two other caps that look like is in line with that one as well and their getting the same voltage. I dont know if maybe this cap could be the main cap for the other two and is supposed to have more voltage or something. Im gonna try to get a hold of a capacitance meter to read the other good caps.