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Sapphire 3.0x drawing current on standby

Posted: Thu Jan 29, 2009 2:17 am
by Lozart
Hi guys, hoping you can give me some help here; I have a pair of Sapphire 3.0x amps that have been giving sterling service for years, but one of them draws around 300mA when it's off (standby) which obviously kills my car battery!

Any ideas what the problem may be? I have a fair level of electronics experience so I reckon I could possibly fix it if I know what the issue is.

Thanks again!
Loz

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Posted: Thu Jan 29, 2009 6:52 am
by kg1961
did you check the wire making sure a little strand of the power is touching the remote? pic of the install and amps

Posted: Thu Jan 29, 2009 7:17 am
by Lozart
Definitely no cross connection, all the wiring has been done with insulated crimp connections.

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Posted: Thu Jan 29, 2009 7:18 am
by kg1961
what about inside the amp?

Posted: Thu Jan 29, 2009 7:30 am
by Lozart
That's what's confusing me, the whole thing looks pristine inside. No toasted components, nothing.

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Posted: Thu Jan 29, 2009 7:34 am
by kg1961
have you removed the board to see the other side?

Posted: Thu Jan 29, 2009 8:00 am
by Lozart
Not yet to be fair. The system has been sat in the car disconnected for ages, but I'm of a mind to resurrect it if the amp issue can be solved.

Posted: Thu Jan 29, 2009 8:18 am
by Rold Gold
Is there a possibility that the power wire may be touching metal somewhere? Over time, the plastic can ware through under the constant vibration. Ya might check it at the firewall for sure but from battery back would be a good idea.

Posted: Thu Jan 29, 2009 9:00 am
by Lozart
The system was de-installed from one car and has sat in the new car disconneted for a while because I know this amp has a problem, the cabling is all fine (I've visually inspected it since taking it out of the old car) plus if it was shorting on the firewall to cause this problem, the other Sapphire that is in the system and daisy chained to the problematic one would also have the same problem (but it doesn't).

Posted: Mon Feb 02, 2009 6:38 am
by Lozart
Problem solved.

Got an Exile X300.2 for £80 ex-demo from a friend that runs a car audio store and then some meathead jumped on the roof of my car Saturday night which looks like it will be an insurance write off.