Fix a car amplifier?

grant law Silver Member Username: Riskyb Post Number: 526 Registered: Feb-06	Posted on Wednesday, March 28, 2007 - 23:40 GMT How hard is it to do this? I have a perfectly good hifonics sitting around that won't power up. I don't even get a 'protect' light. I opened it up and nothing looked charred or burnt. The fuse looks fine. Any ideas?
SkieS Silver Member Username: Skies Courtenay, British Colu... Canada Post Number: 448 Registered: Aug-05	Posted on Wednesday, March 28, 2007 - 23:45 GMT Bust out the DMM? Check for continuity on power/ground. Something just may have come loose and broke the circuit. Possible the power supply could've been toast too. How about a story on how it went? anything intesting?
grant law Silver Member Username: Riskyb Post Number: 527 Registered: Feb-06	Posted on Wednesday, March 28, 2007 - 23:52 GMT lol not really. My friend had a 1,000 watt hifonics and two of the wires touched to together and now it won't power up or it wouldn't power up when we tried it a year ago lol. It's been sitting in his garage ever since. I asked him about it today and he said I could just have it. Oh and he also gave me his sheisty blown volfenhag 15'' today too haha. I was trying to break the magnet off of it to just play around but I couldn't get it. I took a blowtorch to it but the magnet cracked because of the heat lol.
M.S. Gold Member Username: Nd4spd18 Southeast PA Post Number: 1150 Registered: Jul-06	Posted on Wednesday, March 28, 2007 - 23:55 GMT They're not easy to fix unless you have an extensive knowledge of electronics.
grant law Silver Member Username: Riskyb Post Number: 529 Registered: Feb-06	Posted on Thursday, March 29, 2007 - 04:55 GMT I got it to power up. It won't output anything though : (.... Any ideas?
Renegadesrun Silver Member Username: Renegadesrun Lafayette, IN US Post Number: 664 Registered: Oct-04	Posted on Thursday, March 29, 2007 - 06:55 GMT Boat anchor? Door Stop? Wheel Chock? Paper Weight? Send it to T.I.P.S.
Chauncey Brown Platinum Member Username: Chaunb3400 Huntsville, Alabama U.S. Post Number: 11982 Registered: Jul-05	Posted on Thursday, March 29, 2007 - 09:14 GMT paper weight-ftw
GlassWolf Platinum Member Username: Glasswolf Wisteria, Lane USA Post Number: 11747 Registered: Dec-03	Posted on Thursday, March 29, 2007 - 16:03 GMT go to www.bcae1.com and buy his amplifier repair tutorial CDROM. it teaches you all you need to know to repair amps, and tells you what tools you'll need.
Christogq New member Username: Christogq Post Number: 7 Registered: Mar-07	Posted on Thursday, March 29, 2007 - 17:52 GMT Just take it to a flea market and let them repair it. $60-70 bucks well spent.
Jexx Gold Member Username: Illuminator USA Post Number: 4868 Registered: Apr-05	Posted on Friday, March 30, 2007 - 02:54 GMT That's interesting that it powers up, it sounded like it was strictly a PSU problem, but apparently the damage is more extensive (and certainly the PSU could still be at fault)...speaking of which, how DID you get it to power on? It would be best to test out the mosfets etc. with a DMM on diode check...instructions for such are on www.bcae1.com, but as Glasswolf has mentioned, you should just get the amp tutorial on CDROM. It's awesome knowledge.
grant law Silver Member Username: Riskyb Post Number: 534 Registered: Feb-06	Posted on Saturday, March 31, 2007 - 07:20 GMT It powered on when it got good and ready lol. After not even powering on it sat in a garage for a year. I hooked it up a few days ago and it magically powered up but didn't output anything. Maybe the part that the RCA wires are plugged into is messed up? I would love to get that bcae1 thing but i don't want to spend the money and from the looks of it i would also need to buy a Digital Multimeter and an Oscilloscope.
grant law Silver Member Username: Riskyb Post Number: 535 Registered: Feb-06	Posted on Saturday, March 31, 2007 - 07:23 GMT I have learned quite a bit of electronics from my physics class. How hard is it to fix an amp? Is it simple once you know the procedure or do you need to be a senior in electrical engineering? lol
Anthony Silver Member Username: Jaguar600 Post Number: 135 Registered: Jul-05	Posted on Saturday, March 31, 2007 - 17:49 GMT I am in the process right now of trying to repair my amp. I think I have found a transistor that is shorting? If the ohmmeter is reading an abnormal reading does that mean its shorted?
Jexx Gold Member Username: Illuminator USA Post Number: 4894 Registered: Apr-05	Posted on Saturday, March 31, 2007 - 19:00 GMT quote: I have learned quite a bit of electronics from my physics class. How hard is it to fix an amp? Is it simple once you know the procedure or do you need to be a senior in electrical engineering? lol Not too bad, actually. You'll need a DMM and good soldering iron/soldering skills, and a scope would be a good idea in the long term. It's mostly just experience (know what parts are probably bad) and what parts you need to test and how to test them. Parts are relatively cheap and most can be purchased from digikey.com or mouser.com. Knowing how to read a schematic is helpful as well. quote: I am in the process right now of trying to repair my amp. I think I have found a transistor that is shorting? If the ohmmeter is reading an abnormal reading does that mean its shorted? If one transistor is bad, then it's likely all of the transistors in the row are bad, unfortunately. A better place to ask a technical question like that would be here: http://www.diyaudio.com/forums/forumdisplay.php?s=&forumid=38
GlassWolf Platinum Member Username: Glasswolf Wisteria, Lane USA Post Number: 11758 Registered: Dec-03	Posted on Sunday, April 01, 2007 - 03:04 GMT soldering station oscilloscope dummy load adjustable switching power supply DMM spare parts amp schematic misc hand tools

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