JL AMp E1400d Repair Help Please

[superjoey01]

hi my name is Joey i'm new here perry babbin help me out on the punch 60 ix amp to trouble shoot i have here is a JL E1400D model amp it power on green light lit and there is no protect light on. But i have vary vary little clean sound coming out of the outputs with gain 1/2 way up. tested it with my volt meter and i got 0.06v. i open the amp up seen nothing wrong. turn it on and i see a bunch of LED green lights. there are four on and on the driver board there are a set of four in a row which are not on, when the amp is powered up. i'm stuck and willing to learn on these amps i saw another thread on here regarding amp model JL E model 4ch regarding same problem about the op amps where all blown he replace them 4 and now that amp works, but i dunno what the op amps look like, any help would be great thank you

[Perry Babin]

Check the center legs on the rectifiers and power supply FETs. They have a tendancy to break on this line of amps.

[superjoey01]

ok can u show me where there located? is it where the heat sinks are located with the clips?

[superjoey01]

ok this is freakin bs b/c i'm asking for help i c everybody else and getting anwsers if i knew where the damn rectifiers were and power supply fet were i wouldn't be asking for help to trouble shoot them. does the amp need power to test them or can i test them with the power off?

[tinitus]

superjoey01

maybe a misunderstanding, but your post appears rude, and out of order

you have no right to talk this way to members who try to offer you a hand

let this be a warning


moderation

[brandes.cm]

I suggest reading if you haven't; Perry's pages (in his sig line) he so graciously offers to those people with no or very little knowledge of electronics or amp repair.

If you post a photo of the amps pc board someone may circle the parts you are to check.

As for most of us this is a hobby and don't hold all the answers. I have not worked on any JL products yet, but could help if you are willing to help yourself.

Post a photo and do some reading.

[superjoey01]

k thank you for some advise i dont have cam to take pix but here is what i done the amp model is a JL Audio E1400D perry said to check the center legs recterfired and power supply FET. my ? was are the power supply FET the ones mounted on the heatsink? and where is the recterfired located on the board?

[brandes.cm]

Find the transformer, larger wire wound part on the board. The PS fets are located on the heat sink near it, could be one side or both. The rectifiers are located at the end of the PS fets. Try a Google search for this amp under pics or ampguts.com. Rectifiers are marked sometimes ->|

[Perry Babin]

superjoey01:
You have to realize that not everyone here can answer your question and the ones that can answer your question have other things to do (work, sleep...) besides sitting at their computers. In some instances, no one here will be able to help and just because no one replies, it doesn't mean that no one wants to help.

The rectifier is D18. The power supply FETs are the 8 FETs in the groups with Q48, 50, 51.

If you need to remove the clamps:
Jl audio 500/1 Transistor clamps

[Dr Zeus]

Joey,

I did see your PM earlier today but just didnt know how to respond in a helpful way. I've not seen this style of amp before but can tell you that at least the JL Slash series and xTant varients are some of the more complex amps around. My guess is this amp is your personal one which is understandable if you want/need it working. If you are really starting to get into fixing amps then you might want to start easy; say with a Kenwood or Pioneer, followed by some Class-AB amps. Even the junky amps get fixed on my bench (cost permitting) for learning purposed. Trust me you will learn much as you go.

Part of the rewarding experience in fixing amps has got to be the entire process. This community has always been a real help, but much of the success from this community comes from your involvement too. Sometimes its important to be descriptive, and other times its best to just step back and come back to the amp at a later time with a fresh head. Sometimes the repair works, but other times it'll blow up in your face :0 Dont give up learning is what I'm trying to say.