amp repair

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=102572
Printed Date: May 14, 2025 at 7:47 PM

Topic: amp repair

Posted By: dark_d
Subject: amp repair
Date Posted: February 26, 2008 at 1:44 PM

Hi, I've got a Phoenix Gold Octane-R 8.0:4 amplifier. It's 800w max X 4channels. My problem is that the female RCA Input jacks are shorting out. I can jiggle the jack and it will clear up and start working again, but it's very finicky. I was wondering if anyone had suggestions on how to fix it, or replace the jacks.

Thanks,

Replies:

Posted By: i am an idiot
Date Posted: February 26, 2008 at 4:29 PM

You do not need to replace the jacks you simply have a bad solder joint where the connector hits the circuit board. It should be a very easy repair I will look this evening at ampguts.com and see if I can get a picture of your amp and give you a little help Do you have a soldering iron and some solder?

Posted By: i am an idiot
Date Posted: February 26, 2008 at 9:13 PM

https://ampguts.realmofexcursion.com/Phoenix_Gold_Octane_8.0.4/inside1.jpg Take the bottom cover off of the amp, and then from what I can see from the picture, you will have to remove the 3 screws from the board that has the gain pots mounted to it. Unplug the 2 plugs and set the board aside. Now you should be able to see the RCA jacks and see where they connect to the board. Remove the 2 screws that hold the RCA jacks to the front plate. Remove the 2 screws that hold the front plate to the heat sink, remove the front plate and set aside. From the picture I can see 2 screws on the front end of the circuit board that hold it to the heat sink. I am sure that there is at least one more screw that is under the board that you removed first. Remove all screws from the front edge of the board to the first clamp that holds the transistors to the heat sink. At this point you should be able to lift the circuit board slightly away from the heat sink. Only raise it up a half of an inch or so, find something you can place between the board and the heat sink to keep it away from the sink so you will have a little room to work. Flip the amp over and see if you can see the solder connections at the bottom of the board. Wiggle the RCA jacks and see if you can see where the connection is broken. Once you find it heat it up and apply some more solder.

Posted By: dark_d
Date Posted: February 27, 2008 at 12:28 AM

Wow man thanks for the help. i've got the stuff to do it and the amp is already halfway apart.

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Daniel