Hello!
Far fetched, but maybe someone is familiar with electronics from this era and geographical origin? Also, sorry if I've opened this in wrong forum.
Last year purchased an Elektronika 7 wall clock - sort of vacuum tube clock made in early 90s. When I got it, opened it up, cleared the dust and was checking for any obvious issues - found none. Caps looked good, boards and ICs all in one peace and no burn marks to be found. Crossed fingers and plugged it in - all worked like a charm. There are three buttons on it - all worked correctly.
Then it sat until last week. There is an battery compartment, where if you supply 9v, the clock remembers the time when turned off. I wired in a 9v battery and hooked it up in my shed so that when lights are turned on, the clock also turns on. First three days it worked fine, only issue was that it had been slow and was few minutes behind each day (I thought it's an old clock from ussr, - this to be expected). Also I suspected, my 9v battery maybe not sufficient since originally it required 6 x 1.5v C type. Then came the yesterday - I turned on the lights, clock turned on also and time it was showing was few hours off. After about 15 minutes I noticed, it was not advancing - minute counter stayed at one value. I pressed the button for minutes - nothing happened. Hours also did nothing. The third button resets the minute counter to zero - pressing it did that. But that was the last successful input I got. Between there is a separate nixie tube, which blinks 'counting' seconds - that does not blink anymore. Except, when pressing and holding the minute reset button - then it sort of lights up, and stays lit until released.
Unfortunately I did not have time yesterday to check anything and was hoping to gather some materials today, before trying to diagnose it tonight, but internet remains silent about such issue - at least with my google kung fu.
I'm planning, to first, remove the battery I put in place. Then check the input buttons with multimeter - maybe something is stuck and being pressed all the time, blocking the clock from advancing.
Other than this, it is made with some logic chips (which are beyond me to diagnose) and a quartz crystal for the clocky bit.
Basically my question is (I apologize if this is long winded for this forum) - has anyone had to deal with such clock? Are there usual suspects? Could I have broken it with the inappropriate battery?
Adding a picture with the clock (source - google)
Best regards
Far fetched, but maybe someone is familiar with electronics from this era and geographical origin? Also, sorry if I've opened this in wrong forum.
Last year purchased an Elektronika 7 wall clock - sort of vacuum tube clock made in early 90s. When I got it, opened it up, cleared the dust and was checking for any obvious issues - found none. Caps looked good, boards and ICs all in one peace and no burn marks to be found. Crossed fingers and plugged it in - all worked like a charm. There are three buttons on it - all worked correctly.
Then it sat until last week. There is an battery compartment, where if you supply 9v, the clock remembers the time when turned off. I wired in a 9v battery and hooked it up in my shed so that when lights are turned on, the clock also turns on. First three days it worked fine, only issue was that it had been slow and was few minutes behind each day (I thought it's an old clock from ussr, - this to be expected). Also I suspected, my 9v battery maybe not sufficient since originally it required 6 x 1.5v C type. Then came the yesterday - I turned on the lights, clock turned on also and time it was showing was few hours off. After about 15 minutes I noticed, it was not advancing - minute counter stayed at one value. I pressed the button for minutes - nothing happened. Hours also did nothing. The third button resets the minute counter to zero - pressing it did that. But that was the last successful input I got. Between there is a separate nixie tube, which blinks 'counting' seconds - that does not blink anymore. Except, when pressing and holding the minute reset button - then it sort of lights up, and stays lit until released.
Unfortunately I did not have time yesterday to check anything and was hoping to gather some materials today, before trying to diagnose it tonight, but internet remains silent about such issue - at least with my google kung fu.
I'm planning, to first, remove the battery I put in place. Then check the input buttons with multimeter - maybe something is stuck and being pressed all the time, blocking the clock from advancing.
Other than this, it is made with some logic chips (which are beyond me to diagnose) and a quartz crystal for the clocky bit.
Basically my question is (I apologize if this is long winded for this forum) - has anyone had to deal with such clock? Are there usual suspects? Could I have broken it with the inappropriate battery?
Adding a picture with the clock (source - google)
Best regards
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