3 bad amps. pictures of guts. please help!

[BreakMyWallet 10+ year member]

EDnine.2 amp keeps popping fuses. started out of nowhere.



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memphis 500.1

amp just starts smoking when power hits it. i havent hooked it up while the guts are open yet ill probably do that tomorrow. but pictures anyway



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Soundstream

stays in protect mode. realized after i took these pictures what the problem was. haha. but where do i find these parts? radioshack?



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[The_Grimy_One 10+ year member]

I dont know much about repairing amps, but **** man, what are you doing to kill them all?

 

[Imtjnotu 5,000+ posts]

did u ever stop and think that maybe ur wiring is the problem and not the amps...........

 

[akheathen Premium Member]

make you a deal- ship me all 3 amps, and i'll ship back the ed and Memphis repaired, and possibly upgrade that weak ed power supply section, if possible. i replied in your other thread what test to run in that ed, but i can see what happened to the other 2. it does sound like you need to re-think your approach to how you feed, draw off, and/or push/clip your amps, but i don't know the whole story on your side.....

 

[BreakMyWallet 10+ year member]

haha the memphis and soundstream were never hooked up by me nor were ever in any of my cars. they were given to me guys. take it easy.

the ED amp might just be shipped back to ED. they said they would fix it for free, just wondering if i could do it myself and save some time and money

 

[keep_hope_alive Premium Member]

the only way to diagnose an amp is to bench test it with a scope. if you know the incident that caused the failure, you can usually expedite the process by looking in a specific location.

pictures are nice, but not enough to tell you what's wrong. normally, if you have to ask if you can fix it yourself, you can't. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

usually when something fails visibly, other components have failed electrically.

 

[akheathen Premium Member]

fyi- no. that is not how you diagnose them, unless you are tracking a distortion, or poor/low sound level problem. you start with a dmm, and usually find the problem there, and then go through the rest, if needed, and bust out the scope for clamping rms, while it is working. i cannot see how a scope can do anything to an amp that shorts the power inputs..........//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[keep_hope_alive Premium Member]

a good scope can show me the voltage waveform. seeing the waveform tells me so much more. it can even help diagnose failed caps, especially useful for power supplies. Obviously, a DMM is a required tool for measuring resistance. i just prefer a scope for voltage measurements.

This is also a useful tool:

In-Circuit ESR / DCR Capacitor Tester Analyzer

 

[audiobaun 5,000+ posts]

On the memphis amp.. Where the coil is/green and red..I would take a closer look/at the connections/solder joints at the board.Almost under the coil/ my Autotek mean machine 99 came loose after 17 years of pleasure.You can take a small screwdriver and pick or pull just a touch see if they are connected or not???I gave some thoughts on the ed amp on your last posting,but a fix for free is always NICE!! Would like to know the out come of the issues,as i am curious.Im no expert,just a reg guy that has been around car audio since 1989 and still enjoy/tinker a bit.Parts? some can still be found at radioshack,at a computer repair shop/store???May even find an amp at the pawn that you can use parts off of as well??I have done that before???

 

[audiobaun 5,000+ posts]

LOL!!! Yes sir..The Sound Stream amp board is a give away!!! Great pics also..Best of luck repairing.

 

[akheathen Premium Member]

um, donor parts could work in a pinch, and i've done it, mostly just to get the thing working, but i replace the whole set, as you always should, so it is balanced, and reliable.