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#1 |
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diyAudio Member
Join Date: Nov 2011
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I have this amp and I am trying to figure out what these two yellow things are so I can replace them (the two rectanguler melted things). They apear to be the same as in other places on the amp but I need to know what they are called. I also screwed up a couple clips that hold the transistors to the board so if anyone knows where to get them that would be sweet. And the resistors, anyone know of a good chart? The transistors are Irfz44n so that wont be a problem to get.
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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I have no information on this particualr amp.
JL typically uses 0.1uf caps (marked 104) in the locations where you have the yellow capacitors. The gate resistors are typically 47 ohms in other JL amps. There are at least a few that have survived that you can measure (after the removal of the resistor or the FETs) to see if that's correct.
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#3 |
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diyAudio Member
Join Date: Nov 2011
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Does it matter what type of cap used? Will the replacements look the same or can they be differant?
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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You need polyester/Mylar caps. They need to be the same value but they don't have to look the same. The pin spacing is important so that they fit into the board.
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#5 |
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diyAudio Member
Join Date: Nov 2011
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Thanks for your help I ordered the parts and we will see how it goes. Anybody have any ideas on the transistor clips?
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#6 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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The clips generally have to be salvaged from another amp. Since all of the clips of this type vary slightly, it's best to use clips from another JL amp.
In the future, remove them as shown in the following post. Jl audio 500/1 Transistor clamps
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#7 |
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diyAudio Member
Join Date: Nov 2011
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If I would have found this site before I took it apart my head wouldn't hurt so bad.
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#8 |
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diyAudio Member
Join Date: Nov 2011
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Thought I would add a couple of pics of the clips for if somebody runs into something that may work.
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