[I am buying] I am looking to buy a power supply for the canon k30290 printer

I am looking to buy a Canon k30290 power supply.

Input: 100V 89A

Output: 24V 0.5A

32V 0.85A

Contact via PW.

Canon PIXMA MP 520 The printer won't turn on. only turns on for a second after a long time of non-use.

This symptom occurs when the head makes a short circuit. Take it out and turn the printer back on.

I took out the heads and still won't turn on.

I unscrewed the printer, disconnected the display and the board from the control panel. I was able to turn it on, unfortunately I do not want to print a test page, i.e. it prints but as if the ink is running out. The printer has not been used for a long time, can the printhead be dry ??

This is what the power supply looks like from the inside.



I connected the black and red wires to the output plug, the red wire to pin 2 and the black wire to pin 1 and then to pin 3.



On the display of the meter I got 7.5 with the settings and cables connected as in this photo



Does it mean that the power supply is broken? The output on the housing is 24V and 32V ??

Hello,

did a colleague manage to solve the problem with the said power supply?

Buddy, avatar225, the inverter, i.e. the power supply is good. This is not a self-excited converter, so at idle it has an output voltage of 10.5V and 7.5V, but looking at your picture of the terminal block, it is counting from the left: pins 2 and 4 are ground. So between pin 2 or 4 and 1 you will have about 10v and between pin 2 or 4 and 3 it will be about 7.5v. only when you give the 5V voltage from another power supply to pin minus and pin 5, the converter will start working and pin 1 will be 33V and pin 3 -24V. From this a simple conclusion. You have damage in the printer. The protection is simply triggered, which blocks the power supply from firing.
I have this device in the workshop, when I repair it, I will write what was the cause, because it also came with a damaged power supply

aldek51 wrote:

I have this device in the workshop, when I repair it, I will write what was the cause, because it also came with a damaged power supply

has the printer been repaired?

I have a similar problem with the Canon Pixma ip4500 printer. In the free state, the first pin is 9.93 volts, which is correct, while the third pin is 6.5 volts should be 7.5.
after connecting to the printer cube, the first pin has a difference of 10v, while on the third pin the voltage drops to 0.4 volts.
after manual excitation and giving 5 volts to pin 5, the voltage on pin 1 increases to 32v, i.e. correctly, while only 21 volts on the third money, it should be 24v
Could this make the printer refuse to start at all?
Or rather, the power supply is ok and there is a problem with the printer board?
It makes no difference if I take the head out ..