Originally Posted by W1zzard
are you sure you got the right datasheet?
the capacitors in the psu should be electrolyte ones (little cans)
and the capacity should be 1000 uF not 1000 pF
Nope, it's a ceramic disc cap.
And it's 1000pF. The datasheet for it says:
Capactiance: Expressed by four figures. The unit is pF. The first and second figures are significant digits, and the third figure expresses the number of zeros which follow the two numbers.
And it says 102M on the cap = 1000pF with a +-20% tolerance.
Anyway, I just teared the entire printer apart and I think I found the culprit: There's a component on the fax controller board (named SW1 on the PCB and it's called Shinmei A5X-G-24E-908 | 1A 320VDC 1A 120VAC) that is completely burnt and a big chunk of the board is burnt as well. Lightning maybe? It's very common that people unplug everything but forget the fax. And there's a ground cable that goes from the PSU to the fax board so I guess that's why that cap blew and the fuse blew as well. Maybe. I'm just guessing here really.
The electronics for everything else looks fine though. The motherboard and the boards for the motor and evrything looks pristine. SO, if I can replace the cap (the fuse is already replaced) I think I should be able to just unplug the fax board and use the printer as normal. If the software allows for it that is.
And there are shops here that repair electronics, if I ask nicely maybe they can sell me something.
Originally Posted by streetfighter 2
In the USA I can buy a pretty darn nice inkjet printer for €25
I hope this printer is actually worth repairing!
It's a Brother MFC-7420
and while it's pretty old it's pretty much unnused.
And the major reason I'm doing anything at all can be summed up in one word: Learning! I grab every piece of electronics I can get my hands on just to get experience. And I think it's fun.