I tried searching about for a definite answer to this, but I wanted to be more certain. I have a device (a rotary engraver) that turns on and parts of it work, but not enough to use it.
I opened the enclosure to look for issues on the boards and first there were 2 capacitors that were piping out smoke like nobody's business. I replaced those and it worked as it should, intermittently.
Now when I have it opened, I hear a "crackling", or "fizzling" noise coming from a rectifier diode (KBU6K).
My ultimate question is, a rectifier diode should not be making noise, right?
If it's making noise, it has shorted or something, right?
Thanks
Jonathan
I opened the enclosure to look for issues on the boards and first there were 2 capacitors that were piping out smoke like nobody's business. I replaced those and it worked as it should, intermittently.
Now when I have it opened, I hear a "crackling", or "fizzling" noise coming from a rectifier diode (KBU6K).
My ultimate question is, a rectifier diode should not be making noise, right?
If it's making noise, it has shorted or something, right?
Thanks
Jonathan