Reply To: Beomaster 4500 – one channel only

#6224
spassmaker
BRONZE Member
  • Topics Started 3
  • Total Posts 36

Hi Tim

Well done so far that you could measure the signals ;-))

As you wrote that signals comming in the Hybrid IC on PIN 1 & 18, for me, there is no other possibility that the IC is in heaven.

I would buy a new one and try.

It costs about 10 € so it’s not that big invest in renewing the IC.

Thought about the muting PIN 6 but it mutes both channels (L&R) as far as I understand the Datasheet of the STK.

The B&O Service manual shows that the Muting Switch is tied to GND, the Muting comes via the Preamp section.

Hope you’re lucky!

Kind Regards

Christian