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HP 41C DOES NOT BEEP
08-27-2014, 06:53 AM (This post was last modified: 08-27-2014 06:54 AM by aurelio.)
Post: #5
RE: HP 41C DOES NOT BEEP
(08-27-2014 03:52 AM)Les Bell Wrote:  
(08-26-2014 02:55 PM)aurelio Wrote:  I've checked if the BEEP could be enabled/disabled by a flag (actually I dont remember so) but it seems to be not.
This nice 41c I hold in my hands, does not beep and even "tone", just I see on the display "BEEP" Smile when I execute the command

So strange is that this is a "serviced" calculator, I guess: the display is rounded like in the halfnut, but the calculator is a "C";by the way I've tested the calculator, writing a couple of programs and crunching a few numbers without to find (it seems up to now) any other "strange" behaviour

The wires that connect the beeper to the PCB are quite fine and easily damaged while the calculator is in pieces. Is it possible that whoever "serviced" the calculator accidentally broke one of them, probably at the point where they're soldered to the beeper? If so, then two minutes work with a soldering iron will give you the fix.

It means that to solve the problem I must absolutely open the calculator.
let me say, Les, that I've not a good feeling with "posts"
Anyway that's a good chance to know a little more about servicing performed .
I thought that rounded displays need a different driver, so that maybe has been swapped the PCB as well
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Messages In This Thread
HP 41C DOES NOT BEEP - aurelio - 08-26-2014, 02:55 PM
RE: HP 41C DOES NOT BEEP - Jim Horn - 08-26-2014, 09:30 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-27-2014, 06:42 AM
RE: HP 41C DOES NOT BEEP - Les Bell - 08-27-2014, 03:52 AM
RE: HP 41C DOES NOT BEEP - aurelio - 08-27-2014 06:53 AM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 03:25 PM
RE: HP 41C DOES NOT BEEP - Geoff Quickfall - 08-30-2014, 04:13 PM
RE: HP 41C DOES NOT BEEP - Mark Hardman - 08-30-2014, 04:46 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 05:31 PM
RE: HP 41C DOES NOT BEEP - jebem - 08-30-2014, 06:44 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 07:00 PM
RE: HP 41C DOES NOT BEEP - Mark Hardman - 08-30-2014, 06:29 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 07:33 PM
RE: HP 41C DOES NOT BEEP - Mark Hardman - 08-30-2014, 07:41 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 07:56 PM
RE: HP 41C DOES NOT BEEP - Geoff Quickfall - 08-30-2014, 07:02 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 08:13 PM
RE: HP 41C DOES NOT BEEP - Geoff Quickfall - 08-30-2014, 08:25 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 08:54 PM
RE: HP 41C DOES NOT BEEP - Geoff Quickfall - 08-30-2014, 09:27 PM
RE: HP 41C DOES NOT BEEP - aurelio - 08-30-2014, 09:56 PM



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