When your Canon PIXMA TR7520 not turning on becomes a reality, it can disrupt your entire workflow—whether you're printing documents for work, school assignments, or family photos. This all-in-one inkjet printer, known for its compact design and five-color individual ink system, typically powers on with a simple press of the ON button. When it doesn't, the cause usually falls into one of several fixable categories: power supply problems, internal hardware resets, or button/sensor malfunctions. This printer repair guide walks you through systematic troubleshooting to get your TR7520 back online without unnecessary service calls.
Initial Power Supply Checks
Before assuming serious hardware failure, verify that power is actually reaching your printer. Many Canon PIXMA TR7520 not turning on cases resolve at this basic level.
1
Verify the Power Cord Connection: Firmly press the power cord into both the printer's rear port and the wall outlet. The TR7520 uses a two-prong detachable cord—ensure it's fully seated, not loose. Try a different outlet that you know works with another device. Avoid power strips or surge protectors initially, as these can fail silently.
2
Inspect the Power Cord for Damage: Examine the entire length of the cord for fraying, kinks, or exposed wire. Check where the cord enters the molded plugs—this is a common failure point. If you have a compatible Canon power cord from another PIXMA model (such as the TR8520 or TR8620), test with that replacement to isolate the issue.
3
Test the Wall Outlet Voltage: Use a lamp or phone charger to confirm the outlet delivers power. If you're outside North America, verify your outlet matches the printer's voltage rating (100-240V auto-switching on the TR7520, but physical plug adapters must be correct). Voltage fluctuations from old wiring can prevent startup.
Printer Reset and Hardware Troubleshooting
If power supply checks pass, the issue likely involves internal electronics or the power button mechanism itself. These steps require more attention to detail but often yield success in printer support scenarios.
4
Perform a Hard Reset (Power Drain): Unplug the power cord from the wall outlet. Press and hold the printer's ON button for 60 full seconds—this discharges residual power from the capacitors. Release the button, wait two minutes, then reconnect the cord and press ON normally. This troubleshooting technique resolves approximately 30% of unresponsive TR7520 units by clearing temporary firmware hangs.
5
Check the ON Button Mechanism: The TR7520's power button is a capacitive touch sensor, not a physical switch. Clean the button area with a slightly damp microfiber cloth—skin oils and dust can interfere with capacitive sensing. Press firmly on the exact center of the button for 2-3 seconds; quick taps often don't register. Listen for any faint click or feel for vibration feedback indicating the printer recognized the press.
6
Inspect for Overheating or Paper Jam Indicators: Though the printer appears off, open the scanning unit and the front cover. Remove any visible paper fragments, especially near the rear feed slot. Check if the print head carriage moves freely when manually slid (with power disconnected). A seized carriage from dried ink can trigger a protective lockout that prevents the TR7520 from powering on until resolved.
⚠️ Important: Never attempt to disassemble the printer's power supply module or internal components while troubleshooting. The TR7520 contains high-voltage capacitors that retain charge even when unplugged. Opening the chassis voids your warranty and creates serious electrical shock risk. If these steps don't resolve your Canon PIXMA TR7520 not turning on issue, professional printer repair is the safest next step.
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Why does my Canon PIXMA TR7520 not turn on after a power outage?
Power surges during outages can trip the printer's internal protection circuit. Unplug the unit for at least 30 minutes to allow this circuit to reset, then perform the hard reset procedure described in Step 4. Consider using a quality surge protector to prevent future occurrences.
Can a bad ink cartridge prevent the TR7520 from powering on?
While rare, a severely malfunctioning cartridge with a shorted chip can theoretically cause power issues. However, the TR7520 typically powers on briefly to display an error before shutting down. If you get no response at all, the cause is almost certainly power-related rather than ink-related.
How do I know if my TR7520 needs professional repair or replacement?
If your printer is under warranty (typically one year from purchase), contact Canon directly for warranty service. For out-of-warranty units, consider repair costs versus replacement—the TR7520 retails around $180-230. Professional tech support diagnosis typically costs less than $50 and can definitively determine if repair is economical.