ELEKTRONIKA MK 61 display and keys dont work (Pictures)

[jebem]

(08-06-2015 12:16 AM)lechuck Wrote:  A few months ago I bought a calculator Elektronika MK 61, after a few weeks began to fail the 2nd digit but soon he returned to run the digit, but increasingly took longer, but one day that stopped working and with it the following keys: "П→X", number "6" and "/-/"

Hi, welcome to this forum.

Are you using batteries or the AC adapter?

The AC adapter can create issues on the calculator.
When using it, first plug the adapter to the calculator and only then you may connect the adapter to the AC outlet.
This is necessary because the adapter power is not regulated.

Also, after powering off the calculator, always wait at least 30 seconds before powering it on again!
This is related to the dc-dc converter switching power supply operation inside the calculator.

These two procedures will protect your calculator from being damaged due to over voltage.
And these are documented in the calculator users guide (in Russian language).

In you case, I would open the calculator and check for liquids in the mainboard and keyboard areas.

You my find more information here.