Hi Doug, is there any update on your mk1 repairs? 

Hello,

I would like to reopen this topic because i had the same problem and some other problems still remain.

I have a BeoSound 9000 mk1 suddenly it was completely dead. I managed to repair the power board (broken mosfet TR37, leaky capacitor C97, diodes D22 etc).Diode D22 i changed it to an SS36 instead of an SS34 because the beoguys did the same in the mk2 version. Now the standby led lights up. The main relay clicks. The glass door won't move when i push the button (maybe faulty motorboard?) The transformer outputs at first 10V then when the relay clicks 30V. When i push radio the standby led dims and the attached BeoLab clicks on. But nothing happens and the BeoSound goes back to standby. When i push cd all the red lights next to each cd lights up, but the sledge does not move and the lcd remains off. As i measured the 12V line on the powersupply pcb does not come up at booting. Does someone have experience in what components likely to cause trouble so the 12V line does not work? The 5V line is good.

I thank you

Kind regards

Kenny

Hello,

I would like to reopen this topic because i had the same problem and some other problems still remain.

I have a BeoSound 9000 mk1 suddenly it was completely dead. I managed to repair the power board (broken mosfet TR37, leaky capacitor C97, diodes D22 etc).Diode D22 i changed it to an SS36 instead of an SS34 because the beoguys did the same in the mk2 version. Now the standby led lights up. The main relay clicks. The glass door won't move when i push the button (maybe faulty motorboard?) The transformer outputs at first 10V then when the relay clicks 30V. When i push radio the standby led dims and the attached BeoLab clicks on. But nothing happens and the BeoSound goes back to standby. When i push cd all the red lights next to each cd lights up, but the sledge does not move and the lcd remains off. As i measured the 12V line on the powersupply pcb does not come up at booting. Does someone have experience in what components likely to cause trouble so the 12V line does not work? The 5V line is good.

I thank you

Kind regards

Kenny

Hello,

I would like to reopen this topic because i had the same problem and some other problems still remain.

I have a BeoSound 9000 mk1 suddenly it was completely dead. I managed to repair the power board (broken mosfet TR37, leaky capacitor C97, diodes D22 etc).Diode D22 i changed it to an SS36 instead of an SS34 because the beoguys did the same in the mk2 version. Now the standby led lights up. The main relay clicks. The glass door won't move when i push the button (maybe faulty motorboard?) The transformer outputs at first 10V then when the relay clicks 30V. When i push radio the standby led dims and the attached BeoLab clicks on. But nothing happens and the BeoSound goes back to standby. When i push cd all the red lights next to each cd lights up, but the sledge does not move and the lcd remains off. As i measured the 12V line on the powersupply pcb does not come up at booting. Does someone have experience in what components likely to cause trouble so the 12V line does not work? The 5V line is good.

I thank you

Kind regards

Kenny