HP 41-CX no power up



#6

My HP 41-CX will not power up. Any time I press the power button it just beeps. I have checked the contacts and put new N cells in, checked the cell polarities twice. Did a PWR/ENTER reset, tried removing cells overnight, tried removing the Advantage module, tried shorting the battery contacts in the calc, still nuttin.

Is it just a display issue, that is, the unit is powering up but the display is dead?

Anyone have any suggestions on other things to try? I am not really familiar with these units, I still use a 21 myself.

Thanks in advance for any ideas or suggestions.

Regards,

Bruce G.

PS if emailing, don't forget to take out the TRASH.


#7

Hi;

maybe it's just a typo, but the HP41's reset is not

[ON][ENTER]
Instead it is
[ON][<-]  (left-arrow)
If you did it right, just forget it.

Anyway, if it is beeping at the [ON] key, try the following:

1- keep e fast finger over the [R/S] key
2- press and hold [ON] key
3- release [ON] key and, as fast as you can, press [R/S] key (do not use physical force, just a fast tap)

If it is a bad running program, you may stop it. A program like this would do that:

LBL 00
SF 11
OFF
GTO 00
This pogram sets the auto-RUN flag (SF 11), switches the calculator OFF, and when it is switched to ON, it will jump to LBL 00 and start all over again.

Success.

#8

To see if it is a display problem, try the keyboard BEEP command. If it plays a jaunty little tune, your problem is in the display.


#9

Gentlemen,

Thanks for your tips, Unfortunately neither one changed the situation. The keyboard BEEP command netted nothing so the problem must be deeper. Hitting the R/S key immediately following the on key release was unsuccessful also. I guess this is now a parts calc.

Thanks again.

Regards,

Bruce G.


#10

Hi;

is your HP41CX a fullnut or a halfnut?

If you do not know the difference, look at the picture below.

If you really believe it's a parts calcualtor, I'm interested on it mostly if it is a fullnut. Anyway, if you do not give up, I'll help you putting it back to business.

Let me know what you want to do.

Best regards and success.

Luiz CV. Vieira - Brazil


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