Have you ever bought or wanted to buy a vintage radio that Hummms?

When looking on eBay you may notice many people say the radio Hums or has a Hum. Don't let it scare you. This is a common problem that is not real serious.

Before you waste money, buying tubes (valves), I must tell you that will rarely correct the problem with a Hum.

The Hum is usually cause by leaky Electrolytic Filter Capacitors.

These are not very expensive & can be readily available. Once the Filter Capacitors have been replaced, they should last for many years, as the originals did.
 
I do recommend they be installed or replaced by a qualified person with knowledge of electronics.
If installed backwards (positive where negative should be and negative where positive should be), they may Explode & / or do more damage to your radio.

You can find people that are qualified, without spending a lot of money.
Look for a school that offers an electronics course & speak with the instructor. See if they will take your radio as a teaching project.
Usually they only charge you for the parts & you pay only the wholesale rate with No Tax.
You might also look for a vintage radio club (do a Goggle search for 'antique radio club' plus the name of your city or a city near by).
Most clubs have members that will be willing to help you with out a high labor cost.

 I hope this helps you make your decision on whether to buy that nice radio or not.
Regards, Rusty