HP 19C Printer

[Raymond Del Tondo]

(04-05-2014 12:09 PM)hoshikawa Wrote:  I have opened it up but it was pretty clean inside.

Looking at the pics of your next post, I can assure you that it isn't "pretty clean inside", but rather corroded. There are battery acid remains (the green stuff) all over the pcb and on the electronic elements. There's a big chance for the corrosion beeing the cause for the malfunction;-)