5.6V power adapter issue

[sira]

Hi Friends
Recently I got imported Altec Lansing M402 Clock radio from Australia and seems ok but when I increase the volume it gets cracking noise and LCD backlight gets dim when high bass sound. so I replaced the power adaptor with 5.0 v and now all issue was gone. is there any chance to repair the faulty power supply? I think the out current - amperage is low, it says 2000ma but I think it is not giving 2A. so the power adaptor which I replaced also 2 A

, is there any way to fix that issue?

 

[Harald Kapp]

Start by measuring the output voltage of the old adapter at full load (2 A).
If it is below the nominal 5.6V, open the old adapter and start with a visual inspection. The electrolytic capacitors may be leaking and have lost capacity, a common defect. Post some crisp images so others here can have a look at suspect parts, too.

 

[sira]

Start by measuring the output voltage of the old adapter at full load (2 A).
If it is below the nominal 5.6V, open the old adapter and start with a visual inspection. The electrolytic capacitors may be leaking and have lost capacity, a common defect. Post some crisp images so others here can have a look at suspect parts, too.

Hi

I open the unit and noticed 2 1000uf /10v cap were out of shape. then replaced them. now all ok. thank you