Brooke Amplifier Problem

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   When I learned it I got an old transformer to test the setup. your bulb (think it works best on the high side winding cant remember) connected to a winding and connect your battery for a sec to the other and release the bulb will flash. now pass a piece of wire around it and connect it to itself to create a shorted turn. Try again now the bulb wont flash as the shorted turn burns up the energy.

And back the the broke brooke

Edited by kanks - 24 October 2013 at 5:44pm

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kanks Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 26 April 2012 Location: Manchester Status: Offline Points: 259	Post Options Post Reply Quote kanks Report Post Thanks(0) Quote Reply Posted: 24 October 2013 at 5:43pm
	When I learned it I got an old transformer to test the setup. your bulb (think it works best on the high side winding cant remember) connected to a winding and connect your battery for a sec to the other and release the bulb will flash. now pass a piece of wire around it and connect it to itself to create a shorted turn. Try again now the bulb wont flash as the shorted turn burns up the energy. And back the the broke brooke Edited by kanks - 24 October 2013 at 5:44pm

Joebags Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 May 2009 Location: Dublin Status: Offline Points: 51	Post Options Post Reply Quote Joebags Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 1:16pm
	Just came across this post now. Yep have it on the bench at the moment. Seems like the transformer has some shorted windings. I disconnected the output modules and the power supply board and brought the voltage up with a variac and light bulb limiter and she glows like the north star!
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cravings Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7441	Post Options Post Reply Quote cravings Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 3:12pm
	yeah. that's what i was thinking.. but i thought that would be fairly unusual..

Joebags Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 May 2009 Location: Dublin Status: Offline Points: 51	Post Options Post Reply Quote Joebags Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 4:22pm
	Not the most common problem but it does happen. I've emailed Brooke amplifiers to see if they do a replacement. Might be too costly to repair but I'll see if they get back in touch and take it from there.
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Joebags Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 May 2009 Location: Dublin Status: Offline Points: 51	Post Options Post Reply Quote Joebags Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 4:24pm
	Just got an email back there. The amp has been discontinued for 4 years and they don't carry spares.
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cravings Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7441	Post Options Post Reply Quote cravings Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 5:12pm
	it's not a brilliant amp but it has a fair bit of grunt... they were sold that amp by someone in india who built them a sound system. he gave them a pair of single 18" reflex bins with p-audio something (sd18 maybe) in them, and a pair of double 15" boxes with 2 p-audio sn15b and a fake jbl backplate with random crossover, and a huge 2" p-audio horn with a 1" p-audio pa-26 or something on it.. and the one amp, and just told them to join it all up. i've been giving them a crossover and a second amp though, so mostly that amp has just done the single 18s.. i'm going to see if i can help that system a bit. they don't need anything fancy, but i think losing the passing xover, fitting 2" comps on the horns, and maybe doing a bit with some other passive crossovers i have should make it a bit better... shame about the amp though. how many taps are there off the xtformer?

Joebags Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 May 2009 Location: Dublin Status: Offline Points: 51	Post Options Post Reply Quote Joebags Report Post Thanks(0) Quote Reply Posted: 18 December 2013 at 5:30pm
	Just put it away. I'll have a look in the morning. I'll let you know.
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Joebags Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 May 2009 Location: Dublin Status: Offline Points: 51	Post Options Post Reply Quote Joebags Report Post Thanks(0) Quote Reply Posted: 14 January 2014 at 10:59am
	I took some photos here of the transformer wiring. http://www.flickr.com/photos/33203633@N04/. Primary is Blue(245v) Red(230v) Red (0v) Secondary is Yellow (18v) Black (0v) Yellow (18v) Green (0v) Green (22.5v) Red (92v) White (46v) Black (0v) White (46v) Red (92v) Regards Joe
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