Serviser će proveriti napajanje zbog pregrevanja.

Yes. će proveriti is the future tense in Serbian.

• će = the clitic form of hteti used to build the future
• proveriti = to check / to inspect

So Serviser će proveriti... means The technician will check...

A very useful pattern is:

• ja ću
• ti ćeš
• on/ona/ono će
• mi ćemo
• vi ćete
• oni/one/ona će

Then you add the infinitive, for example:

• Serviser će proveriti
• Oni će doći
• Mi ćemo videti

Because Serbian clitics usually tend to come in the second position of the sentence or clause.

In Serviser će proveriti napajanje..., the first element is Serviser, so će comes right after it.

That is why:

• Serviser će proveriti napajanje.

and not normally:

• Serviser proveriti će napajanje.

If the sentence began with the verb phrase, you could also get the fused form:

• Proveriće napajanje.

That is the same future idea, just with a different word order.

Proveriti is the perfective infinitive. In this sentence, it suggests a single completed check: the technician will check the power supply.

Serbian often uses:

• perfective verbs for one whole, completed action
• imperfective verbs for ongoing, repeated, or habitual action

So here:

• proveriti = to check once, to verify, to inspect and complete that action

A more imperfective-style idea would be something like repeated or ongoing checking, but that is not what this sentence is expressing.

Napajanje is the direct object of proveriti, so it is in the accusative case.

However, napajanje is a neuter singular noun, and for many neuter singular nouns, the nominative and accusative forms are the same.

So:

• nominative: napajanje
• accusative: napajanje

That is why it looks unchanged.

Napajanje most often means power supply, power, or electrical supply, depending on context.

In a technical sentence like this, it usually refers to:

• the power supply unit
• the electrical power source
• or the system supplying power to a device

So even if English might translate it in different ways, in Serbian napajanje is a very normal technical word.

The preposition zbog means because of / due to, and it requires the genitive case.

That is why you get:

• zbog pregrevanja

The noun pregrevanje is in the genitive singular here.

Useful pattern:

• zbog problema = because of the problem
• zbog kvara = because of the malfunction
• zbog pregrevanja = because of overheating

Pregrevanje is a verbal noun. It comes from the verb pregrevati se / pregrejati se and means overheating.

So in English, overheating can also function like a noun, and the same is true here.

• pregrevanje = overheating

In this sentence, zbog pregrevanja means because of overheating or due to overheating.

Serviser usually means a service technician, repair technician, or someone who services and fixes equipment.

It often implies someone who works with maintenance, repair, or diagnostics, especially for:

• electronics
• appliances
• machines
• vehicles
• IT equipment

So serviser is a bit more specific than a very broad word like worker.

Because Serbian does not have articles like English a/an/the.

So:

• serviser can mean a technician or the technician
• napajanje can mean a power supply or the power supply

The exact meaning depends on context.

That is completely normal in Serbian, and learners have to get used to understanding definiteness from the situation rather than from an article.

Yes. Serbian word order is more flexible than English, although not completely free.

For example, you could say:

• Serviser će proveriti napajanje zbog pregrevanja.
• Zbog pregrevanja, serviser će proveriti napajanje.
• Napajanje će serviser proveriti zbog pregrevanja.
  This is more marked and gives special emphasis.

The most neutral version is the original one. Different word orders usually change focus or emphasis, not the basic meaning.

Yes, it can be somewhat broad unless context makes it more specific.

Zbog pregrevanja simply means because of overheating or due to overheating. It does not by itself tell you exactly:

• when the overheating happened
• whether it is still happening
• whether it was suspected or confirmed

Serbian often leaves that to context, just like English sometimes does.

If the verb phrase starts the clause, Serbian often combines the future clitic with the verb:

• Proveriće napajanje zbog pregrevanja.

This corresponds to će proveriti, but the form changes because the clitic attaches to the verb.

So compare:

• Serviser će proveriti napajanje.
• Proveriće napajanje.

Both are future tense. The difference is mainly syntax and placement.

It sounds neutral to formal, especially because of the technical vocabulary:

• serviser
• napajanje
• pregrevanje

It would fit naturally in:

• a service report
• a technical explanation
• a repair notice
• customer support communication

It is not slangy or especially casual.