cervin-vega A 1800 schematic needed - diyAudio
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Old 21st October 2006, 10:51 AM   #1
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Default cervin-vega A 1800 schematic needed

This cervin-vega A 1800 arrived divided in parts and i don´t know what`s wrong with it. best would be to find a schematic.
In attachment you will find some pictures. Any help and support are welcome
Wolfgang
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Old 21st October 2006, 10:52 AM   #2
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Default cervin-vega A1800

driver board
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Old 21st October 2006, 10:54 AM   #3
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Default A 1800

output board
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Old 5th March 2010, 09:23 PM   #4
RS232 is offline RS232  United Kingdom
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Default A-1800 Service manual

Old thread but need your help guys
Got a A-1800 in need of some service and tlc and need the service manual for it
Anyone?

Ric
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Old 4th November 2012, 01:22 AM   #5
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Quote:
Originally Posted by RS232 View Post
Old thread but need your help guys
Got a A-1800 in need of some service and tlc and need the service manual for it
Anyone?

Ric
Hello Ric.
Have You got'n Your amp up and running?
I have repaired one some years ago. The most difficult part to get was the LM3100 or CA3100 integrated circuit. The connectors between the driver board and the power board, was dirty, and had to be cleaned. As output transistors I used MJ15024 / MJ15025. Regards Soeren Poulsen Denmark
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Old 7th November 2012, 07:58 PM   #6
RS232 is offline RS232  United Kingdom
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Hi
No still on the shelf with the to-do things.
My problem is one of the driver boards (MPSA10/60 if I'm mistaken) and broken fuse holders.
I got the service manual but I had to pay for it (+/-14 dollars).

Ric
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Old 8th November 2012, 05:03 PM   #7
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Default Cervin Wega A1800

Hello Ric.
Well, I kind of recognice the situation! If I start to mention the number of fine power amplifiers I have, waiting to be repaierd, I will fill this area!. I have an A400 waiting to be repaired. It is kind of like the same schematic. I have the component placement and some picture of the heatsink with the output transistors. Thats all, so I would be very glad to have the schematic of the driver board with the CA3100 ic. On another forum I have just picked up an old thread about an old Rodec HDA450 amplifier. Funny, people have not recognised, that Rodec made a bummer in that amp, They have put the current sharing emitter resistors in the collector of the lover output transistors!
Regarding the Cervin Wega: Is the driver transistors obtainable?
Regards Soeren Poulsen soeren-poulsen"at"hotmail.com
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