つきません

doesn't come on, doesn't turn on, doesn't form, doesn't develop, can't tell

→ 付く
verb · formal, present tense Rare #38,045
doesn't come on, doesn't turn on Negative polite form of 付く; commonly used for lights, TVs, and other devices.
JA: テレビがつきません。
EN: The TV won't turn on.
doesn't form, doesn't develop Used for abilities, strength, and similar qualities that develop or build up.
JA: 毎日練習しても、すぐには力がつきません。
EN: Even if you practice every day, you won't build strength right away.
can't tell, can't make out Used in expressions such as 区別がつきません (can't tell the difference) and 見当がつきません (have no idea).
JA: 二人の声はよく似ていて、区別がつきません。
EN: Their voices are so similar that I can't tell them apart.
Conjugation of 付く
Indicative present
ついてる付いてるつきません

彼には私と彼のお兄さんの区別がつきません。

He can't tell me and his older brother apart.

見当もつきません

I have no idea.

— レベッカ (1940)

好きな勉強だけしていても実力はつきませんよ。

You won’t improve just by studying only the things you like.

テレビがつきません。

The TV won’t turn on.

てんで見当がつきません。

I haven't got the faintest idea.