Need Help sp540v blowing yellow magenta fuse

[lukamascia]

Hallo, i'm writing from Italy and i hope you can help me.
i'm looking for capacitors near f1 f2 fuses in sp540v main board, where can i buy it?
main board blowing fuse always and cables are ok.

I replaced black cyan head with no problems and it's printing well.

thank you...
P.S: sorry for my bad english

 

[Bluealert]

Do not know where to buy your fuses or capacitors in Italy. I can offer you this. If the head keeps blowing - you checked the top and bottom sides of the ribbon cables. The tend to get pinholes from spilled ink. In addition you need to check the printhead board that you could have spilled ink on. Hope one of these were overlooked and that is the issue opposed to chasing capacitors.

 

[Jodean]

hi,

2. on a mainboard, check tranzistors C4131 and 1746, usually one of C4131 gone.

where do i find these transistors? i dont see any lables like that?

 

[Solventinkjet]

It's easy to find the transistors once you realize they are the things attached to the large heat sinks on the head board / main board depending on the machine model. They are black and have 3 metal prongs that connect to the board. That being said, transistors are not easy to test like fuses and replacing them can be difficult as well even if you have basic soldering skills. It's not a simple fix.

 

[Jodean]

not a problem used to solder boards in college for daktronics......is the upper or lower bank related to the meganta yellow head?