Norwood451
New Member
So, there is not way to get stereo.
Is there anyway to repair the left speaker? I have a manual and could fix it if I knew want to fix.
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Bang and Olufsen Beomaster 2400 /1900 left speaker channel no sound
- Thread starter Norwood451
- Start date
So, there is not way to get stereo.
Is there anyway to repair the left speaker? I have a manual and could fix it if I knew want to fix.
elnaldo
Lunatic Member
Hello. Welcome to AK!
Can you test if you have sound at the Tape out connector, in both channels?
You need to narrow the problem to the input connectors, speaker selector, preamp section or power amplifier section. You need to find where the signal disappear.
Can you post a link to the service manual or schematic?
Can you test if you have sound at the Tape out connector, in both channels?
You need to narrow the problem to the input connectors, speaker selector, preamp section or power amplifier section. You need to find where the signal disappear.
Can you post a link to the service manual or schematic?
Norwood451
New Member
Good question. I will need to check the tape connector. However, as I remember the same issue occurred with the turntable connection.
Below is a link to 2400 - I believe the same thing. Mine says Boemaster 1900 Model 2904 - everything does look is the same. There are two manuals attached. I also have the Schematic that came with the unit - when I bought it in 1975., which looks exactly the same as the schematic attached.
Service Manual / schematic for Bang and Olufsen Boemster 2400 type 2901
Below is a link to 2400 - I believe the same thing. Mine says Boemaster 1900 Model 2904 - everything does look is the same. There are two manuals attached. I also have the Schematic that came with the unit - when I bought it in 1975., which looks exactly the same as the schematic attached.
Service Manual / schematic for Bang and Olufsen Boemster 2400 type 2901
gslikker
Super Member
I think different units are just with or without a remote. My 1900 lacks the remote-circuitry inside.
Take care when lifting off the front....the "springs"for the selector touchbuttons are easily damaged (and when putting back together make sure they do align with the pins below.
Google how to open up a beomaster 1900 to get some beoworld forum info.
edit: I just realised mine is a 2300, which is probably the same anyway
Take care when lifting off the front....the "springs"for the selector touchbuttons are easily damaged (and when putting back together make sure they do align with the pins below.
Google how to open up a beomaster 1900 to get some beoworld forum info.
edit: I just realised mine is a 2300, which is probably the same anyway
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Norwood451
New Member
Thank you. The manual shows how to open and there is no remote. I have taken some of the unit apart and put it back together, as I figure if I can put it together I can take it apart again with ease
Service Manual / schematic for Bang and Olufsen Boemster 2400 type 2901
Without knowing where to look, it would take me a million years for me to figure out how to fix the left channel. If I had some idea what to check based on the problem symptoms, I would check that and replace that part.
Service Manual / schematic for Bang and Olufsen Boemster 2400 type 2901
Without knowing where to look, it would take me a million years for me to figure out how to fix the left channel. If I had some idea what to check based on the problem symptoms, I would check that and replace that part.
elnaldo
Lunatic Member
Reading the schematic (page 16 on the pdf file) , 1st tests I'd do are:
check with headphones, and move the "HT2" switch, several times to ON -Off, to check if the headphones or speakers have sound.
(Edited: I see a pict in the web,
https://2.bp.blogspot.com/-Laq6k1ph...LcBGAs/s1600/beomaster_1900_reassembly_01.jpg
and I don't see an "HT2" switch, but the schematic shows that switch labeled "7" and "8" next to the speaker connectors.)
Check at the Tape OUTPUT (half of the tape connector is the output for a recorder) if you have sound
If you have sound at the tape out, and no sound with headphones, the problem is in the preamp or power amp, further testing is needed, I'd check at the volume control.
check with headphones, and move the "HT2" switch, several times to ON -Off, to check if the headphones or speakers have sound.
(Edited: I see a pict in the web,
https://2.bp.blogspot.com/-Laq6k1ph...LcBGAs/s1600/beomaster_1900_reassembly_01.jpg
and I don't see an "HT2" switch, but the schematic shows that switch labeled "7" and "8" next to the speaker connectors.)
Check at the Tape OUTPUT (half of the tape connector is the output for a recorder) if you have sound
If you have sound at the tape out, and no sound with headphones, the problem is in the preamp or power amp, further testing is needed, I'd check at the volume control.
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Oldsansui441
Super Member
Hi alexis, try beoparts, he has the parts you need to repair your sliders. Absolutely no affiliation, I just know he has a great knowledge of B&O gear.
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