Hi everyone. A few months ago I received a Beomaster 1900 with Beovox C30 speakers from my girlfriends grandparents, that after many years of service was left to gathering dust in a studyroom. Everything seemed to be working well, however there was a slight humming sound in the speakers that unfortunately got significantly worse over the last months. Nowadays I experience a loud humming sound when I power up the Beomaster that I can reduce by leaving the unit powered on for a while with the volume on minimal, before setting the volume to normal and playing music. I'm not an expert in electronics but I read in this forum that a humming sound in this model is generally caused by leaking and/or dried-out electrolytic capacitors, especially in the power supply. Can anyone confirm if this is likely the case with my Beomaster 1900? Furthermore I read something about a repair kit; could this be an option for me? 

Thanks very much in advance,

Rob

Hi Rob,

Welcome to Beoworld !

First check that the mains voltage setting (at the bottom of the Beomaster) is correct for your area.
Some Beomaster 1900's are prone to hum a bit if the supplied mains voltage is a bit on the low side.
If f.e. you live in a 230V area and the Beomaster is set for 240V - if it hums set it to 220V. It will not be damaged
by on overvoltage of 10V. Just remember to ALWAYS unplug from mains when setting the mains voltage.

Having said that; The humming, from your description, sounds like aging capacitors indeed.
A cap kit is available (from me) for convenience, it's huge kit with more than 60 components and I would recommend
you replace the lot.
There can be other reasons for a Beomaster 1900 (/2400) to hum, like a rectifier fault, bad voltage regulation or a
wrong power supply load, wrong wattage panel lamps etc. (a lamp kit is also available) but the hum pattern you
experience screams capacitors.

Martin

Hi Martin,

Thanks!

I've checked the mains voltage setting and its on 220V, which should be correct. I left out that I currently have a broken panel lamp (on one of the FM channels), but I never expected this to be relevant in relation to the hum.

The capacitator kit with 60 components, how much does this cost? Furthermore, is this a task that can be performed by a novice like myself? Finally the lamp kit, how much would that be as I have one broken anyway?

Med venlig hilsen, Rob

Hi Rob,

One broken lamp will not be the reason for the humming.

If you can handle a standard electronic type soldering iron and can tell the positive
lead of a capacitor from the negative, you can do the recap.

Alternatively, your Beomaster is welcome here for repairs (I'm also in Denmark).

You have a PM regarding kits (check your inbox at the extreme top right corner of this page).

Martin