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Old 3rd October 2008, 04:33 PM   #1
Phil50 is offline Phil50  United Kingdom
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Default Faulty Audiolab 8000P

I have aquired an old Audiolab 8000P and it is rather faulty.

On one channel it has a diode that is illuminated RED? some special Zener gadget?
T
he other channnel has two resistors that tend to fry after 30 seconds R145 and R144. I have removed all 8 power transistors and wound the amp up on a variac and it pulls 230ma for about 30 secs and then these two resistors fry.

I have pulled out and tested every transistor and diode and they all show ok?

I am thinking it may be easier to put it in the bin and get something less complex but I hate to give up. Audiolab themsleves were not helpful and refused manuals or circuit digram. Not a firm to buy from in future I think.
Any help would be great.
thanks
Phil
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Old 4th October 2008, 12:28 AM   #2
eyoung is offline eyoung  Scotland
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Hello,

Do you have a schematic you can post, or have you done a search on the forum for it???

Regards, Elwood
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Old 4th October 2008, 01:26 AM   #3
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Default Re: Faulty Audiolab 8000P

Quote:
Originally posted by Phil50
I am thinking it may be easier to put it in the bin
Or gut it an use the chassis & power supply.

dave
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Old 4th October 2008, 01:31 AM   #4
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http://www.diyaudio.com/forums/showt...?postid=662633
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Old 5th October 2008, 01:01 AM   #5
eyoung is offline eyoung  Scotland
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Hola...

I have a schematic thanks to a previous post/thread.. All of the components have values assigned but no r1,c1,q1,etc...What are the value of the resistors and what other component are they near or points they go between??? or maybe a schematic with more info???

Regards, Elwood
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Old 5th October 2008, 02:21 PM   #6
Phil50 is offline Phil50  United Kingdom
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I was hoping for a reply to my post. I dont actually see that I have had one? I have an 8000P not an 8000A they are totaly different animals.

Perhaps scrapping it is the right idea instead of asking about it.

I have been told before that no one actually knows much about these complex amplifiers except the company themselves who will repair it albeit a very high price. thanks anyway.
regards
Phil
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