MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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tested my old 12inch car sub on my hi-fi, the sub is fcuked by the way!
worked for few mins then heard it go pop then hi-fi display flashing "PROTECT and PUSH POWER BUTTION"
the manual says if it flashed that in the display it means a big power was inputted???
so i disconnected it from mains and left for 10mins, working now, but the right speaker side which i tested the sub on does NOT work!???
any ideas??
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richard_syko
Banned
Registered: 17th Dec 03
Location: Newport, Wales
User status: Offline
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Blown the right channel?
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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 mate i think you really need to leave stuff alone!
The car sub is 4 ohms. Hifi systems are only designed to take 8-16 ohms. Connecting the sub to it will have definatly secured that channels death. Needs repair i would have thought. I know so many ppl that have done this!
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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i know, but i like to play around with electrical things!
its one way i learn new things i guess, by trial and error
i connected my more powerfull Alpine sub to it long time ago and that worked fine for ages!!
but this time the sub i tried was damaged/blown and shite!
so its a common thing that people do then??
will the Hi-Fi channel defintaly be blown, and need repair??
how much do you think it will cost to repair that part of the Hi Fi??
i got a reminder about the gaurantee running out a few months ago to so im not covered!!
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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repair isnt usually cheap. best to take it somewhere for a quote (Dont tell them what you did tho, just say it stopped working) and see. You may be lucky, could be a SMF or something small
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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what do you think is actually wrong with it though, what is a SMF?
it powers up, and is ok for about 6 seconds BUT no sound at all even though equalisers are working and going up and down?? and then it starts to flash "protect/switch of" again
will it deffinatly need a PROFESSIONALL to repair it??
could it just be a fuse inside it that may have blown??
thanks for all help really appreciate it  
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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SMF is a surface mount fuse, very small and requires precise soldering.
Youve defo blown a component on the amp, maybe even an output mosfet if it uses them. It needs pro repair.
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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just poped it open and had a good close look, theirs a massive circuit board to one side, and it seems fine, nothing looked/smelled blown or burnt out, the connection terminals are fine to, the power supply circuit had about 5 fuses and were fine too 
i "Think" one of the relays has blown, as normally about 2 seconds after switching it on i can normally hear a relay switch "CLICK" but their is nothing at all now? but i havnt a clue which relay could be blown as theirs laods of them and they all "look" ok!
[Edited on 07-10-2004 by MoNkEy MaGiC]
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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just had a look through my documents and apparently this is what i can do....
i can pick one of the Break down companies recommended repairers who will give me a estimate of repair and then i can legally take out a yearly breakdown cover for £50, which will pay the repairer all the cost for repair, sounds pretty good
[Edited on 07-10-2004 by MoNkEy MaGiC]
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mobymaster
Member
Registered: 12th Sep 04
Location: Rawtenstall, Lancashire
User status: Offline
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Just because you cant see any damage it doesnt mean that the component hasnt blown. I work with fones, and get phones coming in with charging faults etc, the charging use has blown but it looks fine, if you take it to a pro, they will know what to test for.
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