Rep Power: 380

I just hooked up a buddies new head unit Alpine CDA-9856 that i got him a super deal on from audio express cause they still like me there. Anyways he was all excited cause it had the Ipod hook up and everything. His jetta had premium sound and we hooked a 4-channel amp up a few years ago to power his boston s series. Anyways i got the head unit installed and everything was working great. the sound was an amazing diffrence with just a head unit swap.

Anyways i get home and about 15 minutes after i get home one of his speakers don't work. I go back the next day and its an amp channel. Is thier anyway to fix a channel or does he need to send it to alpine to get fixed? right now I hooked his front left up to the front right and adjusted the gain and it actually sounds pretty good still. Just not sure is this is a good idea to keep this way.

 
Rep Power: 380

oh yeah i know its possible, i am an electronic engineer well in 1 1/2 weeks i'll have my degree in it. But is it feesable, and do yo uthink the diagrams would be easily accessable?

 
Rep Power: 0

i know ebay sometimes sells the repair manuals for amps check there

 
Rep Power: 336

No I would not think so..Unless you work for the company..I know my company does not release any schematics on any of our products..I will never do that....

But you can ask for it...otherwise you will have to backtrace it to the source of the problem...

And congrats on your degree....I am also a degreed engineer working in a telecom. industry..

 
Rep Power: 786

dude didn't you like JUST graduate high school, where did you get an EE degree so quick?

yes you CAN fix it, you can fix anything, you just gotta know the cause of the problem.

 
Rep Power: 323

Andrew - I asked this question myself a few years back as I have an older 4 channel Poweracoustik amp that has a flaky channel as well and never got much of an answer....I ended up replacing it with an Alpine MVRF-340.

I've been hesitant to just throw it away because it still "works"...but it's useless to me unless it can be fixed.

 
Rep Power: 323

Mega - do you know anyone that can fix amps?

 
Rep Power: 380

i graduated highschool in 04, but also too college class through my senior year. i wil lhave my degree in a couple weeks.

 
Rep Power: 256

If you want to fix it yourself, that could get scary even if you do have a degree in whatever. You can always send it out to get repaired.. Depending on how old the amp is and how good it is, might just want to consider replacing the unit.

 
Rep Power: 786

depends on the problem. I can fix some problems myself, others would have to get outsourced to a repair depot.

 
Rep Power: 786

2 year degree or 4 year Andrew?

 
Rep Power: 380

2 year.

 
Rep Power: 0

I know pioneer will sell you schematics for their equipment. I tried ordering a product manual one of their DSP's and i ordered the service manual instead. I was suprised to open the book and find a huge schematic staring me in the face, it was extremely detailed as well.

 
Rep Power: 786

^^ but are you a pioneer dealer?

 
Rep Power: 0

did you check everything down the line and make sure it wasnt a wire, an rca, a preout on the deck, or anything else?
make sure first

schematics are out there if you look hard enough

as to repair, your best and most reliable bet would be to call the manufacturer, even if its not on warranty, but its the priciest.

check your phone book for electronics repair shops, there should be at least one if you live in a decent sized city.

now if there isnt one, i know k&b audio does good work
www.kbaudio.com

 
Rep Power: 380

the channel was the last thing i checked i went over everything. and thier are electronic places around st.louis there are quite a few. i just need the schemtics for the amp if anything but doubt alpine is going to dish out that info, even if it is a discontinued sylye.

 
Rep Power: 0

go ask around a real audio forum like elitecaraudio.com
there are a few people there that can get service manuals.

and if you are an EE, just poke around with a dmm and a scope and im sure you can figure it out.
if its only one channel, i can already tell you its not your PS, its most likely a transistor on the output stage.

 
Rep Power: 0

nope just a customer