Re: 82143a printer Message #3 Posted by Vieira, Luiz C. (Brazil) on 6 Jan 2003, 10:59 p.m., in response to message #2 by Frederic
Hi;
let's get this thread, then.
I have once my own 82143A with a problem closer to this one. Mine is an earlier model, and it has a problem: if the AC adapter is connected without the batteries (or at least one low-voltage reference), one of the printer's IC (Integrated Circuit) seems to burn out. I found it out by doing it! Inadvertently. I simply connected the AC adapter and turned the printer ON. It worked for less than 20 seconds and stopped with the BAT indicator ON. Then I saw the battery outside the compartment (I used to take it out when I was not using the printer for a long time). Bye-bye printer...
At that time, HP still repaired this model (198x) and I sent it to the Brazilian repair center.
Maybe you have a related problem, because a lot of them appeared as I insisted using the printer that way. After a few minutes switched to ON the BAT LED lit even with the AC adapter plugged in. Then it printed unsual characters and, suddenly, an all-black "banner" in all lines. At that point I switched it off. I believe if I insisted I would have the drivers and/or the current boosters burnt out. Maybe that's what happened to yours.
I'd try an old 82143A and replace one particular IC that seems to be the one that burnt. The IC I'm referring to is right between the Vac input connector and the interface connector and it's code is 1026-0287. At least this was the only component HP repair center replaced. I draw a single PCB layout with all components and compare with the printer after it returned (I waited for twelve months till warranty expired): the only one change was this one. Even the power supply was the same (the little printed circuit board you're probably comparing to a chair).
You should expect other posts about this subject to confirm what I experienced once. Not too much probable, but maybe it's a big coincidence, who knows.
Hope you have success.
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