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If what has been previously mentioned holds true about these things being able to power on with the print heads disconnected I will try to determine which cable to remove and disconnect! Thanks about the upside down scenario and I guess making a mark on the connector with a Sharpie would be a...

Thanks stratman

Oh and I always purchased ink cartridges while on sale and in bulk because I am quite a ways away from getting them. This is another reason why I flog these possible lemons to work because the cartridges are EXPENSIVE!

So if I'm reading your responses correctly? A defective print head can prevent the MP830 to power on, can damage a logic board OR a defective logic board can damage a PH? IF the logic board is okay but the PH is defective, this can prevent a power on but the print head can be disconnected and...

PeterBJ Thanks for your reply to my post and all of the information you have provided!! Here is a quote from a link from the link you were kind enough to provide. Schematic diagrams and other electronics info are rare in Canon service manuals, but the service manual for Canon Pixma 4200 has...

The sad part about these printers especially the one I purchased new is they have very little use making me wonder if most are expensive junk! I decided to spend a great deal on this lemon fooling myself into thinking you get what you pay for but this wasn't the case. Even though I don't print...

jimbo123 have you recently found any information on these power up problems? As for poking around craiglist, I decided to look on Kijiji and ended up wit a second one BUT it won't print black, then recently I was stupid enough to purchase yet another from an estate sale, where the owner died...

http://forums.steves-digicams.com/photo-inkjet/148955-3-canon-mp830-1-ip4300-dead-after-changing-print-head.html Who knows? This could be the culprit to croaked logic boards. It would almost be safe to say if the board is replaced (if this is actually my problem?) replacing the print head at the...

jimbo Re trigger's manual mentioned in the above link. Is it different than the actual Canon service manual PDF available online or is it more extensive? BTW I phoned Canon customer support today as well and that wasnt much help with only the suggestion of a loyalty discount on a new printer...

Thanks jimbo! Earlier today after giving up trying to get a discussion going with you after the suggestion of throwing out the printer because I kept getting blocked with the reason of my material was like spam and/or wasnt appropriate but in reality was very descriptive of what i was trying to...

Replacement parts depending on what I actually need. That's why I'm presently trying to determine where the print head cable is connected to for the disconnect test to see if anything happens. This printer has probably only printed at most a couple hundred pages and cosmetically it looks like...

Okay no response to my question. Instead of disassembling the entire printer to disconnect the print head, is there anywhere else I can disconnect it?? Where does this ribbon cable connect to? Anybody out there know how to access the print head without total disassemble of this unit. Help and...

I have an Pixma MP 830 that up to now has been working very well with very little use since I bought it new when this model first came out. I got sick and tired of my Lexmark printers always acting up and decided to step up to the plate and finally buy something considerably more expensive and...