It has ceased to function, it is bereft of life, it has shuffled up the curtains and gone to join the "choir invisible". It is an ex-camera.(Monty Python.- you wanted the humour).
I would not give it a moment's thought, but go out into the wide world and see what you can get for cheap. The Zenit E was selenium metered cheapest of the cheap non-TTL metering unsophisticated, built like the "battleship Potemkin " and a step down from the East German PrAkticas which I listed after in 1972. almost anything is better. (avoid Holgas and the execrable "Olympia" whichever seems to be sold by some sort of cult on Craigslist)
Get yourself a nice, small SLR from t the late 70-s to early 80-s that takes silver oxide batteries minolta XG 7 and XD 11 can be had for a song sometimes and enjoy taking pictures. Meanwhile the Zenit can be a paperweight, Or hammer.
(the next poster will disagree and say that the Jupiter lens on the Zenit is a copy of the Zeiss bio on and has a unique Bokeh when Hp5 is developed for extended time in diluted Rodinal,,,, nuts.)
David