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Beosound 2300 no sound at the radio? Maybe factory reset?

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Master123456789
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Master123456789 posted on Sat, Dec 14 2019 10:23 AM
I have a Beosound 2300 where there is no sound on the radio. The cd-player works fine. What to do? Is there a way of resetting the beosound?

Ofen the CD player is defect, but not the radio as far as I know.

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W.Frankenberg / Gandalf
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a question, is a good antenna connected?

without a good antenna signal, noise suppression suppresses the sound!

in the worst case, the FM tuner is defective.

wilfried

Master123456789
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Yes the antenna is on and very good signal. The is also no fm noise when I turn on other frequencies.
W.Frankenberg / Gandalf
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I looked in the circuit diagram, the switching of the sound sources happens on the power / preamp board
if there is no signal from the tuner board then I would first
look for the connections between these boards
Preamp <-> tuner
P13 <-> P5 power supply connection
P21 <-> P7 DATA / CLOCK
P14 <-> P3 audio signal
none of the voltages passed on the P5 are intended exclusively for the tuner, so I would check the voltages, but I don't think that a voltage is missing (unless a wiring error has occurred).
DATA / CLOCK are only the digital signals from the RDS or frequency display
On the P3 / P14, a humming sound should be heard on the right or left when touched (audio signal output of the tuner); if there is no sound here, I suspect the defect on the tuner board

wilfried

Weebyx
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Weebyx replied on Sun, Dec 15 2019 11:57 AM

Master123456789:
Yes the antenna is on and very good signal. The is also no fm noise when I turn on other frequencies.

The Beocenter 2300/2500/Ourveture tuner boards(and also Beocenter 9300) often dies, and cannot be fixed. If you have antenna hooked up to it, and it cannot tune any stations automatically, then 99% the tuner board is dead. Nothing really that can be done, many people have tried to fix them, no-one has succeded  to my knowledge.

I have seen many of these die.

/Weebyx

W.Frankenberg / Gandalf
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Weebyx:

Master123456789:
Yes the antenna is on and very good signal. The is also no fm noise when I turn on other frequencies.

The Beocenter 2300/2500/Ourveture tuner boards(and also Beocenter 9300) often dies, and cannot be fixed!

/Weebyx

I have to agree with Weebyx

a normally equipped electronics technician cannot really repair the board because smd components are installed

@Weebyx: do you know whether b & o is still repairing these boards or is still supplying the boards as a spare part?

wilfried

Schletti82
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If your 2300 has the optional RDS Modul mounted remove that one. This one is often dying, and with a defective one the radio isn’t working.

the module is only clipped and has to wires to remove. Take it out when it is mounted and try again your Radio 

Weebyx
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Weebyx replied on Mon, Dec 16 2019 9:20 AM

W.Frankenberg:

Weebyx:

Master123456789:
Yes the antenna is on and very good signal. The is also no fm noise when I turn on other frequencies.

The Beocenter 2300/2500/Ourveture tuner boards(and also Beocenter 9300) often dies, and cannot be fixed!

/Weebyx

I have to agree with Weebyx

a normally equipped electronics technician cannot really repair the board because smd components are installed

@Weebyx: do you know whether b & o is still repairing these boards or is still supplying the boards as a spare part?

To my understanding, the problem is not SMD components(which there are actually few, if any) on the tuner boards. The real problem is calibrating and "tuning" the whole circuit correct after replacing dying components.

B&O will not repair these boards, and have never done it to my understanding, they just replaced the defective tuner board with a new.

/Weebyx

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