Question about Canon PIXMA iP3000 InkJet Photo Printer
It's not the mains lead, (substituted).
As with most modern electronics, your unit has a 'switched-mode' power supply and most are built well enough to outlast the warranty.
They are very efficient but the kind of service some parts (especially electrolytic capacitors) are subjected to adverse conditions.
If you want to try a DIY analysis, remove the housing from your unit and locate the power supply; if it is modular, you may have to open a second case (much smaller).
Power supplies are easy to identify since they are clearly a different animal than found on the main boards, being made up of coils and larger semiconductors than the other functions.
If you gain access, look for cylindrical components mounted perpendicular to the circuit board with a plastic foil jacket and an exposed aluminum top, there may be a lot of different sizes but these are the most likely failures.
Since they can burst when failing, the aluminum is scored in a 'Y' pattern to enable a more gentle bursting.
Check them closely and look for domed (bulging) tops. These are close to dying and typically no longer able to function as designed.
They vary in quality so replacements can be better (longer-lived) or worse.
Most techs will know which replacements are best and the cost difference is low and negligible.
Posted on Dec 29, 2014
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Posted on Jan 02, 2017
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