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carlday1
carlday1, Engineer
Category: Printers
Satisfied Customers: 329
Experience:  Self Employed Hardware Engineer
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Cannon Pixmar, MP810 no longer switches on Checked the connecting

Customer Question

Cannon Pixmar, MP810 no longer switches on
Checked the connecting cable which is OK
Had been doing a nozzel clean and for no apparent reason went off and now won't switch on.

Have cleaned the print head as recommended elsewhere but still nothing
Submitted: 3 years ago.
Category: Printers
Expert:  carlday1 replied 3 years ago.

carlday1 :

Hi,

Thank for using Just Answer my name is Carl and I will help you with your question.

I am sorry to hear you are having trouble with your printer, does your printer appear to be dead?

I have come across this problem before with this model of printer and it is usually the power supply that is at fault, there is a small component in the power supply that fails and stops the printer from powering up.

A replacement power supply is available here

http://www.crc-tasktron.co.uk/index.php?app=ecom&ns=prodshow&ref=MP600PS


JACUSTOMER-1tx6aauf- :

The printer is dead.

JACUSTOMER-1tx6aauf- :

Before spending money on a power supply I need to check that it is dead (ie the item to be replaced) can you say what component usually fails?

JACUSTOMER-1tx6aauf- :

(Internet comments suggest others have replace the power supply and still fails)

carlday1 :

I suspect it is the regulator in the power supply I cannot remember what type it is, If you are able to solder it is quite an easy job to do.

JACUSTOMER-1tx6aauf- :

Thanks Carl, I can solder I will investigate the voltage regulator .

carlday1 :

Sometimes when I have changed the regulator I have known it to blow again within minutes but other times it has been fine. The only thing I have found that can make it blow is a damaged print head on one printer when I changed the regulator and the print head the printer carried on working.

When you start thinking about changing the print head it is often cheaper to look at a new printer.

JACUSTOMER-1tx6aauf- :

I had heard that printer head fails were expensive. I cleaned it in the hopes that would help. I assume that by damage we mean that the minute nozzles are blocked

carlday1 :

The regulator is available from Cricklewood electronics it is only a small transistor like reg.

JACUSTOMER-1tx6aauf- :

Thanks for that.

carlday1 :

I think it is more like a short on the head I have never investigated it to narrow it down.

carlday1 :

I would try the reg and see what happens it should only be a couple of pounds it might be cheaper on ebay. I am sorry I cannot remember the part number

carlday1 :

Thank you for the image. I would suggest checking the diodes with a meter. I have circled the regulator on the image for you.

carlday1 :

Full Size Image