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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: 27 November 2015 at 10:37pm |
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Yea, i am getting 11.5 VDC from that channel, with the positive from the negative output on the amp.
I guess the clicking in and out is the protection circuitry working? |
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It's not how big it is, it's what you do with it!
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DjLeco
Young Croc 
Joined: 21 April 2009 Location: Bucharest Status: Offline Points: 817 |
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Posted: 28 November 2015 at 11:44am |
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More than sure!
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I'm A Stupid SMART Romanian...
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kedwardsleisure
Old Croc 
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 28 November 2015 at 3:52pm |
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don't connect your speakers again until it's fixed. If you need to use the amp in an emergency, remove the main fuse for the faulty channel.
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Kevin
North Staffordshire |
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vmh
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Joined: 23 March 2008 Location: Portugal Status: Offline Points: 188 |
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Posted: 29 November 2015 at 6:12pm |
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I won't be using it for a while. I was planning on building some new speakers before doing another night but it looks like that will have to be put on hold until the VZ is fixed.
I need to weigh up my options. Wether it is better to try to get it fixed here or send it back to the UK. |
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It's not how big it is, it's what you do with it!
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DjLeco
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Joined: 21 April 2009 Location: Bucharest Status: Offline Points: 817 |
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Posted: 30 November 2015 at 7:16am |
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Try to replace the output modules between them, if the trouble goes into the other channel, the fault is sure on the output module, and is a point where to start the fix. Modules are compatible between it. Pay great attention to rotate it 180 degrees reversed (cannot fit directly) also output screws too. Be gentle with output cooper foils between modules and binding post part, are very sensitive!
Edited by DjLeco - 30 November 2015 at 9:24am |
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I'm A Stupid SMART Romanian...
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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 November 2015 at 7:26pm |
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Ok That's an idea. I can try that first.
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It's not how big it is, it's what you do with it!
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DjLeco
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Posted: 30 November 2015 at 8:43pm |
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We wait for results!
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I'm A Stupid SMART Romanian...
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vmh
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Posted: 02 December 2015 at 6:56pm |
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ASAP. ;-)
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It's not how big it is, it's what you do with it!
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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 December 2015 at 12:02am |
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Yep.
When i swapped the output modules over the problem swapped to the other side. I don't have the tool to test the transistors for leakage only a multimeter but i guess if i take the modules to any radio repair shop they should be able to test them? And also the rest of the circuitry. |
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It's not how big it is, it's what you do with it!
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vmh
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Joined: 23 March 2008 Location: Portugal Status: Offline Points: 188 |
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Posted: 27 January 2016 at 11:04pm |
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Update for anyone interested.
Well i took the offending OS module to a local electronics repair shop who took one look and said no, there is no one in the town who can fix it!! So i went and asked the PA hire shop who directed me to a computer repair shop of all places. They said they could fix it but needed the whole amp. As we know the problem is in the OS module due to the problem swapping sides when i swap the modules over i left the module with them. Three weeks later they returned it saying they had tested it and found nothing wrong! As i understand it the Transistors cant be tested in situ and have to be individually removed and tested. They have not been removed so i am back to square one. This is the problems you get with 'professionals' in Portugal I have now removed the transistors myself as a friend has a multi meter with a transistor testing setting. I guess this only tests the values though not leakage but it is a step forward. It has also been suggested that i replace the transistors anyway as even if one is gone they all need to be replaced due to them being matched but i'm not keen on doing that until i know for sure that it is the transistors that is the problem. Anyone have any thoughts on this? |
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It's not how big it is, it's what you do with it!
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kedwardsleisure
Old Croc
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 28 January 2016 at 12:08pm |
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you need to find someone who knows what they are doing
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Kevin
North Staffordshire |
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Pinyorouk
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Joined: 31 January 2011 Status: Offline Points: 551 |
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Posted: 28 January 2016 at 3:24pm |
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You are playing a very dangerous game if you don't know what your doing. The problem could become much worse and the amplifier damaged more seriously in a matter of seconds. Please send it to an expert even if it means sending it away for repair on a pallet to the UK. kedwardsleisure is one such expert.
Edited by Pinyorouk - 28 January 2016 at 3:26pm |
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