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6th August 2012, 11:30 AM
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#1 |
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diyAudio Member
Join Date: Aug 2012
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Help with Hifonics Brutus BXi1600D that does not power up
Hi all,
I´m German and i have a problem with the same Amplifier. The Red Power LED. I´ts the Hifonics Brutus BXi1600D. For testing i have a Batteryloader 12v and i connected the Amp.. So i can switch on. After two or three seconds of time they do a "click" an the Power LED is red... All pieces in the Amp lookung good, but there is a white ceramic piece( 5w33ohmJ)looks a little bit brown or blown... maybe this piece is broken..... i can take a photo for help i´f someone want to help me. Thank you Sry for the bad English... |
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7th August 2012, 12:02 PM
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#2 |
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diyAudio Moderator
Join Date: Sep 2007
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Have you checked the 33 ohm resistor ? It can sometimes be hard to tell if it 33 ohm or 0.33 ohm if the markings are burned.
__________________
------------------------------------------------------- A simulation free zone. Design it, build it, test it. |
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7th August 2012, 12:21 PM
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#4 |
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diyAudio Moderator
Join Date: Sep 2007
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That is pretty conclusive that it is OK and correct at 33 ohm.
These are quite a complex piece of electronics. You really need to have the full circuit diagram available and start a methodical test procedure. Most of the problems seem to be related to the power devices and rectifiers and their drive. Even if you find something like a shorted FET there could be other components or a primary reason why it has failed.
__________________
------------------------------------------------------- A simulation free zone. Design it, build it, test it. |
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7th August 2012, 12:35 PM
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#5 |
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diyAudio Member
Join Date: Aug 2012
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OK. I don´t have the circuit diagram and it is not possible to get these from Hifonics... So i think i must check every parts...
I think i will begin with the Mosfets.... They have 3 legs.. on the fets can i read f1 G31 FQP65N06 Can someone tell me which way i can check these Parts. there are 6 on every side of zhe Amp |
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7th August 2012, 01:15 PM
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#6 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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If the protect LED is lit, the amp likely has shorted output transistors.
You should not read anything near 0 ohms between the legs of any individual transistor, no matter the probe orientation. Post a photo of the inside of the amp.
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Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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7th August 2012, 01:32 PM
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#7 |
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diyAudio Member
Join Date: Aug 2012
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 Pic-Upload.de - IMGP1284.jpg Pic-Upload.de - IMGP1283.jpg http://www.pic-upload.de/view-154902...P1282.jpg.html Pic-Upload.de - IMGP1281.jpg
Last edited by Mrtraffic; 7th August 2012 at 01:34 PM. |
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