Drobná elektronika je rozbitá, takže ji nevyměníme.

In Czech, elektronika is normally a singular feminine noun. It often works like a mass or category noun, meaning electronics as a type of goods or equipment.

That is why the sentence uses:

• je = is
• drobná = feminine singular
• rozbitá = feminine singular

So Czech treats it as one category, not as a plural noun.

Drobná literally means small, minor, or small-sized. In this phrase, drobná elektronika means something like small electronics or small electronic devices.

It is a common way to talk about a product category, for example:

• headphones
• chargers
• small gadgets
• similar consumer electronics

So drobná here is not mainly about something being tiny; it is more about the category of small electronic items.

Because both words agree with elektronika.

Elektronika is:

• feminine
• singular
• nominative here, because it is the subject

So the describing words must match it:

• drobná elektronika
• elektronika je rozbitá

This kind of agreement is very important in Czech.

Je is the 3rd person singular present form of být = to be.

So:

• elektronika je rozbitá = the electronics is broken

Czech usually keeps je in this kind of sentence. It links the subject (elektronika) with the description (rozbitá).

Ji means it here, and it refers back to elektronika.

It is used because vyměnit needs a direct object:

• vyměnit co? = replace/exchange what?
• ji = it

Since elektronika is feminine singular, the pronoun is also feminine singular.

Because ji is the correct accusative form for a feminine singular direct object.

Here is the basic idea:

• ji = her/it in the accusative
• jí is usually a different case, especially dative or genitive
• to is neuter, so it would not match elektronika, which is feminine

So in this sentence, ji is the right form.

Because vyměnit is a perfective verb.

In Czech, perfective verbs do not normally have a true present meaning. Their present-tense forms usually refer to the future.

So:

• vyměníme = we will replace / exchange
• nevyměníme = we will not replace / exchange

This is very common in Czech and often surprises English speakers.

The main difference is aspect:

• měnit = imperfective
  means changing/replacing in a general, repeated, or ongoing sense

• vyměnit = perfective
  means a single completed replacement or exchange

In this sentence, the speaker means one specific result: we will not replace it. That is why vyměnit is used.

Because short pronouns like ji usually stand very early in the clause in normal Czech word order.

So:

• takže ji nevyměníme sounds neutral and natural

If you said:

• takže nevyměníme ji

that would sound marked and would usually put special emphasis on ji, as if contrasting it with something else.

Takže means so, therefore, or as a result.

It connects the two parts like this:

• it is broken
• so we will not replace it

It introduces the consequence of the first clause.

Because takže connects two clauses, and in Czech a comma is normally written before it in this kind of sentence.

So the structure is:

• Drobná elektronika je rozbitá,
• takže ji nevyměníme.

The comma helps show the result relationship: it is broken, so we will not replace it.

Usually rozbitá suggests broken or damaged. With electronics, it can mean that something does not work because it is broken.

A related word is pokažená, which often means faulty or not working properly.

Very roughly:

• rozbitá = broken, damaged
• pokažená = malfunctioning, faulty

In everyday speech, both may be possible for electronics, but rozbitá often sounds a bit more like actual breakage or damage.