Şofben düzelir düzelmez duş alacağım.

This is a very common Turkish time expression meaning as soon as ...

So:

• düzelir düzelmez = as soon as it gets fixed / as soon as it starts working properly

Even though düzelmez by itself would mean it does not get fixed, in this pattern it does not carry a literal negative meaning. The whole structure:

• verb + aorist
  • same verb + negative aorist

functions as a fixed expression meaning the moment X happens or as soon as X happens.

Examples:

• Gelir gelmez aradı. = He called as soon as he arrived.
• Eve varır varmaz uyudum. = I slept as soon as I got home.

So in your sentence, düzelir düzelmez should be learned as one time expression.

Düzelmek means to become fixed, to improve, to get better, to start working properly again.

In this sentence, it refers to the şofben being broken or not working properly, and then becoming okay again.

Important distinction:

• düzeltmek = to fix something
• düzelmek = to get fixed / become fixed

So:

• Şofbeni tamirci düzeltti. = The repairman fixed the water heater.
• Şofben düzeldi. = The water heater got fixed / started working again.

Here the sentence uses düzelmek, not düzeltmek, because the focus is on the condition of the water heater, not on who fixes it.

Şofben is a water heater, especially the kind used to heat water for washing or showering.

In everyday usage, this sentence most likely means something like:

• As soon as the water heater is fixed, I’ll take a shower.

A learner might wonder whether it means the shower itself is broken, but grammatically şofben is specifically the thing that is getting fixed.

Yes, almak often means to take or to buy, but in the expression duş almak, it means to take a shower.

This is a set phrase:

• duş almak = to take a shower
• banyo yapmak = to bathe / have a bath / wash
• kahvaltı yapmak = to have breakfast

So duş alacağım means:

• I will take a shower

This is very similar to English, where we also say take a shower rather than do a shower.

Alacağım comes from almak (to take) and means I will take.

Breakdown:

• verb stem: al-
• future marker: -acak / -ecek
• 1st person singular ending: -ım / -im / -um / -üm

So:

• al-
• -acak
• -ım

becomes:

• alacağım = I will take

The k in -acak changes to ğ before the personal ending, which is normal in Turkish:

• alacak
• alacağım

So:

• duş alacağım = I will take a shower

In Turkish, subject pronouns are often omitted because the verb ending already shows who the subject is.

Here:

• alacağım = I will take

The ending -ım tells you the subject is I, so ben is unnecessary unless you want emphasis.

Compare:

• Duş alacağım. = I will take a shower.
• Ben duş alacağım. = I will take a shower (with extra emphasis on I)

So leaving out ben is completely natural.

Because şofben is the subject of düzelir düzelmez.

In this sentence:

• şofben = the thing that gets fixed
• duş alacağım = the main action done by the speaker

So şofben does not need an accusative or dative ending here. It is simply the noun undergoing the change of state.

Compare:

• Şofben düzeldi. = The water heater got fixed.
• Şofbeni tamir ettiler. = They repaired the water heater.

In the second sentence, şofbeni has the accusative ending because it is the direct object of tamir ettiler. But in your sentence, şofben is not an object; it is the subject of düzelmek.

No. Turkish has a few ways to express when or as soon as.

For example:

• Şofben düzelince duş alacağım. = I’ll take a shower when/as soon as the water heater is fixed.
• Şofben düzeldiği zaman duş alacağım. = I’ll take a shower when the water heater is fixed.

But düzelir düzelmez is especially good for immediately after something happens. It often sounds a bit more immediate than some alternatives.

So:

• düzelince = when it gets fixed
• düzelir düzelmez = the moment it gets fixed / as soon as it gets fixed

The sentence follows a very normal Turkish pattern:

• Şofben düzelir düzelmez = time clause
• duş alacağım = main clause

So literally it is something like:

• The water heater gets-fixed gets-fixed-not, shower I-will-take
• natural English: As soon as the water heater is fixed, I’ll take a shower.

Turkish often puts time expressions before the main verb, and the main verb usually comes at the end of its clause.

Yes, in natural English translation it often comes out that way, even though Turkish uses düzelmek.

That is because English sometimes prefers:

• as soon as it is fixed instead of
• as soon as it gets fixed

Turkish düzelmek focuses on the result/state change, not necessarily on the person doing the repair.

So depending on context, good translations include:

• As soon as the water heater is fixed, I’ll take a shower.
• As soon as the water heater starts working again, I’ll take a shower.

Both are natural.

Yes. Duş almak is the standard expression for to take a shower.

• duş almak = natural
• duş yapmak = not the usual standard expression

So in this sentence, duş alacağım is exactly what you would expect a native speaker to say.