I've got many defective printer heads - most of them were rejected (yellow flashing light). You could easily see the burnt traces on the flex-film-pcb. However, my evil killer head looks perfectly healthy on t he outside. The flex pcb shows no damages. It's a pity.
I guess I have no choice but...
Thanks for your replies!
Well, I had a closer look at the hardware and it made me very disappointed in Canon: the expensive parts are left virtually unprotected. The MPU's I/O lines go directly to the printer head contacts. Ok, there are inline fuses, however, these fuses are strong enough to...
I've had a couple of defective printers (i865, ip4000, mp750, mp760, mp780) that were basically ok but with bad print heads - which were either clogged or completely burnt to death.
One of the heads did only print colors but no pigmented black on one of the printers.
I found out that this...