Yeah… that tracks 😅 — that’s exactly what happens when a power supply is undersized for a motor.

What likely happened

Your compressor needed:

• ~6A running
• 8–10A surge at startup

Your converter probably was something like:

• 12V 2A / 3A / 5A

👉 So it got overloaded instantly → overheat → pop / burn → failure

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Important question now

Is it:

• Just dead (no output) ❌
• Or actual smoke / spark / smell 🔥

If there was smoke or smell:
👉 Do NOT use it again (fire risk)

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Good news

Your compressor is probably fine 👍
Motors are tough — power supplies die first.

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What you should use instead

For that compressor, get:

• 12V 10A power supply (minimum)
• Better: 12V 15A (safer, cooler operation)

These are commonly called:

• “SMPS 12V 10A”
• “LED power supply 12V 10A”

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Pro tip (very important for motors)

Add:

• A fuse (10A) in series
• Or use a car battery (best for testing)

Car battery = perfect because:

• High current ✔
• Stable ✔
• No sudden failure ✔

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Reality check (so you don’t repeat this)

Motors ≠ LEDs or routers
They:

• Pull huge current spikes
• Kill weak power supplies instantly

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If you want, I can suggest a cheap setup under ₹500–₹1000 that will run your compressor safely.