Recent content by benzinerwin

  1. B

    evil print head instantly kills printer electronics (i865/ip4000/etc)

    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...
  2. B

    evil print head instantly kills printer electronics (i865/ip4000/etc)

    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...
  3. B

    evil print head instantly kills printer electronics (i865/ip4000/etc)

    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...
Top