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VZ5000 problem 2 |
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vmh 
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Joined: 23 March 2008 Location: Portugal Status: Offline Points: 188 |
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 Posted: 30 January 2016 at 12:16am |
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Well, if i cant find a problem with the transistors i will put it back together and see if there is a way to get it back to the UK for repair.
I can probably find someone returning from the Freekuency Festival in april who can take it for me. |
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It's not how big it is, it's what you do with it!
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nev23
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Joined: 08 September 2008 Location: Taunton, UK Status: Offline Points: 99 |
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Posted: 04 February 2016 at 12:43pm |
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I repaired two of these amps recently.
You could post the module to me and I will give you an estimate. I can then repair it if you wish. I have the diagrams and I am familiar with the grounded bridge topology. The matched transistors can get expensive but I have some original spares. If they are the wrong grade, the modern equivalents are about £25 for a set. Two sets may be needed, but that is less likely. https://www.facebook.com/zenworksengineer |
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valve head777
Old Croc 
Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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Posted: 04 February 2016 at 1:12pm |
Nev, is that you?? from Brighton, worked in 'ahem' diy radio? if so you built me a 400watt amp in a plastic tub! |
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Freedom of choice, choice of freedom.
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nev23
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Joined: 08 September 2008 Location: Taunton, UK Status: Offline Points: 99 |
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Posted: 04 February 2016 at 5:50pm |
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That's me!
I don't remember the plastic tub, though. I did build or rebuild some odd things a long time ago. I would love to see a picture, as I have very few mementoes from those days. |
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valve head777
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Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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Posted: 05 February 2016 at 1:16pm |
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nice to have your expertise on here Nev..... you built the tub amp in the basemant of Trafalger Street!
sorry no pics tho- it got rebuilt into a rack mount in the end, and as far as i know is still running. Shame your not so close, have a lovely 600w valve beast running part of my bass section which i'd trust in your hands. hopr ya all good..... Ben
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vmh
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Joined: 23 March 2008 Location: Portugal Status: Offline Points: 188 |
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Posted: 05 February 2016 at 9:59pm |
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Well i tested the transistors following instructions on line and although they are not all exactly the same specs, they seem to be all working correctly.
I guess they won't be all exactly the same but have a tolerance they should be within. I'm running out of time now so i will probably just put it back together and decide what to do with it after the Freekuency Fest.  |
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nev23 wrote: