Financial calculator won't accept initial input (behaves as if it is in sleep mode)

[Amplemann]

Recently purchased a new HP 17bII+ financial calculator to replace my previous HP financial calculator that I used for 12 years. I am very familiar with this model, albeit an earlier generation. Frequently when I enter a number for a calculation  the display remains blank.  I have to press the keys a number of times in order to activate the device.  I know that it is not a key problem, because it happens whenever the unit is idle for a period of time.  Once it has been activated, it works flawlessly.

Has anyone experienced this problem?

Thanks

Amplemann

[BartdB]

Hi,

Interesting behaviour. I have not noticed it on mine, but then I only do occasional calculations on it - switching it on then doing a caculation and switching it off again.

Have you tried to reset the calculator?

http://support.hp.com/us-en/document/bpia5291

Regards,

Bart

[andy11]

This can be effect of bad connections somewhere inside the unit, so

-check voltage of the batteries

-check the batteries for leakage and corrosion

-check the contacts inside the battery compartment for corrosion and loose connections

-chech the screws which tight the the body of the unit if they are fasten enough.

If the above not help dissassembling the unit and looking for bad connections or corrosion inside can be necessary