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Old 5th June 2006, 08:25 AM   #1
Aug is offline Aug  England
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Default Harrison Power Amplifiers

Hi, I wonder if any of you guys can help me out?

I am trying to find some service details for a Large Harrison Power Amplifier - Model Compu-tec 5000.

I've had very little success in finding any info about the company ever existing, but I know they had several pro audio products on the market some time ago.

I keep coming across a Harrison Labs that speacialise in Car stuff, I don't think it's the same company.

I beleive this Harrison were based in UK, possibly Cambridge.

Any info on Schematics, Service Agents, where are they now etc, would be very much appreciated.

Thanks
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Old 6th June 2006, 01:47 AM   #2
Leolabs is offline Leolabs  Malaysia
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What's the problem with it???
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Old 6th June 2006, 11:11 AM   #3
Aug is offline Aug  England
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Default Harrison Computek 5000

Hi Leo, thanks for taking time out to reply.

The Power Amps themselves are fine, but there is a fault on the Soft Start, Thermal Protection PCB.

Unfortunately someone has attempted to repair before, some of the components look a little dubious, that's why I would like to get hold of schematic.

Can you help?

Thanks

Aug
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Old 6th June 2006, 11:34 AM   #4
TroelsM is offline TroelsM  Denmark
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Hi.

4 years ago I tried to find a schematic for a Harrison Xi600 amp.

A company called "high end musikservice" ( I think...) in Denmark had schematics, and would sell me a copy for approx 10-20Euro.

Here's a link: http://www.highendmusik.dk/21.html

I don't know if they are able to help you.

Regards TroelsM
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Old 6th June 2006, 08:53 PM   #5
Aug is offline Aug  England
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Hi Thanks TroelsM, I'll give them a try.

Aug
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Old 11th June 2006, 08:43 AM   #6
Aug is offline Aug  England
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Hi Guys, thanks for your help.

Not much luck with tracking down any data, although the links you provided did respond.

Problem solved now, as I suspected someone had previously attempted a repair and put the wrong pin configuration triac in the soft start circuitry.

Regards

Aug
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Old 19th June 2007, 02:16 PM   #7
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Default Harrison circuits

I have Harisson circuits but i have to scan them in, time is the killer here. if you let me kow which ones you need i can let you know if i have them and see if i can get it down to a smaller size (some are on A0 paper so bear wih me

thanks
Lee Basham
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Old 19th June 2007, 02:34 PM   #8
TroelsM is offline TroelsM  Denmark
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I would be very grateful to get a copy of the schematics of Harrison Xi600 amp.

It seems to include some novel aspects and folks might be interested.

Regards TroelsM
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Old 17th July 2008, 01:27 PM   #9
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I have a Harrison Xi2000 which has a fault in the standby circuit on one channel. It would be great to get a schematic for it! I got it for 20 which is nothing even for the scrap value of it. It's built really well! Full dual monobloc!
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Old 24th March 2010, 06:14 PM   #10
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I need a schematic of the K4000 and have therefore start a thread:
Harrison type "K4000" (K 4000) MKII 2x1000W/4ohm
unfortunately without success.
Perhaps one of you have an idea, where I can ask
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