I have an older laptop ASUS UX510UWK bought in January 2019. In about last 2 years I have random few seconds dropouts on my external 4K monitor connected over USB-C.

I think the problem maybe be caused in the lifetime expiration of electrolytic capacitors on the laptop PCB. I think their lifetime is about 3 000 hours. When I replaced one electrolytic capacitor 22 uF by a new tantalum capacitor, I measured the capacity of the old one just 7 uF of which is 32% of the full capacity.

Do you think it is worth to replace 10 electrolytic capacitors by tantalum capacitor?

Which tantalum capacitors to select to replace these electrolytic capacitors?
EAW25 330 2.5V
EAW41 220 6.3V
EAW42 22 25V
33EHS 286 (hybrid capacitor)

 

Do you think it is worth to replace 10 electrolytic capacitors by tantalum capacitor?

I doubt your dropouts are due to capacitor failure, but it shouldn't hurt to replace them.

(A nit, but tantalum capacitors are also electrolytic. The common capacitors called electrolytics are aluminum electrolytics).

 

"No User Serviceable Parts Inside"

Select a more modern Mother-Board, they're not all that expensive.
Computers need to be up-graded from time to time.
Besides that, you'll probably get a performance boost and more modern features.
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It seems unlikely that will do much of anything for 5-year-old capacitors. You do know that garden variety capacitors have a wide tolerance like +20% and -80% unless you are willing to pay extra for them to get a tighter tolerance and better temperature characteristics.

 

I doubt your dropouts are due to capacitor failure, but it shouldn't hurt to replace them.

Can you advise me what type of tantalum capacitors I should buy?

The notebook is running well. I think the random dropouts of external 4k monitor are caused by insufficient power supply of USB-C to monitor caused by aged electrolytic capacitors.

 

The external monitor is powered via the USB port?

 

No, monitor is powered by power supply cable.

 

No, monitor is powered by power supply cable.

Then why do you think this?

I think the random dropouts of external 4k monitor are caused by insufficient power supply of USB-C to monitor caused by aged electrolytic capacitors

 

The monitor shows signal input source USB-C ->90W. "by insufficient power supply of USB-C to monitor" I mean just the power supply of USB-C line not actually the monitor itself.

 

It is highly unlikely that the USB output would be the only symptom of insufficient power. The amount of power used by the USB signal lines is minuscule compare to the laptop as a whole.

 

We are a little off topic. My question was which type of tantalum capacitors to use for electronic capacitor replacement?

 

Tantalum capacitors are a type of electrolytic capacitors.
You don’t need tantalum capacitors. They will not correct dropout problems.

 

Whilst MLCCs are susceptible to aging, polymer tantalums achieve long-term stability over an operational lifetime of 20 years

 

Whilst MLCCs are susceptible to aging, polymer tantalums achieve long-term stability over an operational lifetime of 20 years

They also explode, violently sometimes.