HP 41 printer problem


I have a HP-41 printer that have a problem : With only batteries or with bat and power supp. when i switch on the 2 lights goes on and i can hear a noize from A PART THAT IS WRITTEN aztec 0905-0408, is about i inch and have the form of a chair. Also the print heat is very hot. No paper feeding at all and on the 41 i get "out of paper" message.



it seems you have a short-circuited current booster OR a burnet-out head "driver".

If you have paper in the right position and pull it up a little, you'll probably see a vertical black line right ounder the middle of the head (the burners are there). If the current boosters are shortened, almost all power supply is over the head burners (do not let the printer ON or the head will be definitely lost), what explains the ZZZZ (from the power supply) and the "there's_something_hot" smell.

If you want to try, open the printer (five screws, one under each rubber feet and another close to the battery compartment) and carefully detach the flex circuit connector that connects the printer head to the mainboard (there is only one flex circuit). You must use something to move the conector's contact (mainboard) away, because they "pinch" the flex circuit connector tabs. I use a small antistatic piece of plastic so it fits between the contacts and the flex circuit connector. I push it in and carefully pull the flex circuit connector, then I pull the plastic out.

Then you can briefly switch the printer ON and simply verify if the BATT LED is off and only POWER LED is ON. Take care not allowing the flex circuit to touch other components and do not attach the printer to any HP41 door.

I can have a look in my 82143A and try to identify the head components, but you should also wait for other posts to help more.


Possibly Related Threads…
Thread Author Replies Views Last Post
  HP-41(CL): The easiest way to transfer FOCAL programs from a Linux PC to the HP-41 Geir Isene 13 5,663 12-05-2013, 02:40 AM
Last Post: Hans Brueggemann
  Virtual printer for a virtual 41 Mike (Stgt) 6 2,338 10-30-2013, 10:32 AM
Last Post: Mike (Stgt)
  I am back ;) with a problem on HP 41 ;( wildpig 7 2,183 07-09-2012, 11:30 AM
Last Post: Mike Morrow
  HP-41 > USB printer simulation (82143A) Diego Diaz 25 6,720 02-17-2012, 06:38 PM
Last Post: Diego Diaz
  HP-41 printer interface question. (To the M-code gurus out there) Diego Diaz 2 1,353 01-29-2012, 12:18 PM
Last Post: Diego Diaz
  HP 9845A Printer Problem Mike 3 1,206 08-12-2010, 01:16 PM
Last Post: Mike
  HP-41 Card Reader NOT gummy wheel problem Rich Forest 19 4,547 01-12-2009, 10:59 AM
Last Post: Ignazio Cara (Italy)
  HP 41 Perpheral Printer/Ludlum 322 prinsron 2 1,283 11-13-2008, 10:52 AM
Last Post: Bill (Smithville, NJ)
  HP 41 CX cardreader problem Matti Övermark 4 1,473 09-06-2008, 09:41 AM
Last Post: Matti Övermark
  Thermal Printer Paper for 82143A Printer? Gordon Hamachi 1 1,100 02-03-2008, 03:05 PM
Last Post: Randy

Forum Jump: