Spot the deliberate mistake |
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jbl_man
Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11154 |
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Had one years ago with the input cable strands wrapped round the tinsle lead-in wires on a Goodmans driver, and then insulated with Sellotape! Owner obviously didnt own a soldering iron.
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Be seeing you.
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djgorey
Young Croc Joined: 29 December 2007 Location: S. Wales Status: Offline Points: 1306 |
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Why would you do that to a 218?!
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Gaffa tape is like the force in Star Wars - there's a dark side and a light side and it holds the universe together
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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Not really, those italian bass cabs have 16R drivers in them, I think the amp in virgin form would do maybe just over a hundred watts, particularly as they downsized the bus caps..the original ones being too big to fit in the enclosure. The little board glued or stuck with sticky pads to the back of the mackie pre-amp is the low voltage supply. I demurred on the repair, politely but firmly. |
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Kevin
North Staffordshire |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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Crown MA5000VZ output board
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Kevin
North Staffordshire |
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msoundsystem
Young Croc Joined: 10 November 2011 Location: wales Status: Offline Points: 625 |
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Dry joint/ no solder on the pin near middle left?
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jbl_man
Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11154 |
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The lower row of emmiters dont seem to be connected to anything?
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Be seeing you.
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simonp1100
Young Croc Joined: 01 September 2008 Location: Bristol Status: Offline Points: 1103 |
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Q513 Base is not connected / soldered to the board tracking.
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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too easy
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Kevin
North Staffordshire |
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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One word about those things seen in this thread: Why!? :D
Edited by Tonskulus - 31 October 2019 at 12:19pm |
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madboffin
Old Croc Joined: 03 July 2009 Location: Milton Keynes Status: Offline Points: 1537 |
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Somebody has tried to repair it before you and made a mess of putting it back together.
The soldering looks a mess, for example Q521E probably isn't making contact. Hard to tell from the picture, but is temp comp transistor U500 buried under a blob of solder, or is that just the heat conductiong compound? |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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U500, the ODEP temp sensing IC is ok, just the way it is.
Quite a raft of bizarre faults on this pair of 5000's are coming to light slowly. For example I've just had to fit a new snubber capacitor to the fan speed control triac...because it had been replaced by an NTC inrush thermistor. |
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Kevin
North Staffordshire |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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Kevin
North Staffordshire |
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