Question about Alpine PDX-4.100 Car Audio Amplifier

1 Answer

Amp doesnt work

Okay, my amp was working fine for about 3 weeks.  I was listening to music one day last week when the volume cut out completely.  The power light on the amp was slightly flickering.  Headunit and all connections check out.  Now the amp was cutting on occasionally, but when I went to try and fix it I found pushing in hard on the fuses would make it play.  After doing that though it wont cut back on at all now.  Any suggestions?

Posted by Colorada on

  • Colorada Oct 25, 2007

    it was new when I bought it but, it was on ebay.  Thanks for helping me though.  What should I try?

×

Ad

1 Answer

Anonymous

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 631 Answers

If you've only had it for 3 weeks and it's under warranty, you need to send it to a warranty station.
If there is no warranty and you want to try to find/repair the problem yourself, let me know.

Posted on Oct 24, 2007

  • Anonymous Oct 25, 2007

    There's no guarantee that you can repair it and you could make a mistake that could cause more damage.



    If the fuses are tight in the holders and pull out evenly (both contacts have equal pressure on the fuse blades), there are likely broken connections on the holders or on the power connectors. If you want to remove the cover, you would look for broken/cracked solder connections. If you see a ring around the solder joint, it's likely a broken connection. Since yours has been intermittant, it should be obvious.



    Do NOT power up the amp while it's out of the sink. When you do apply power, all power semiconductors MUST be clamped tightly to the heatsink.



    I'd suggest that you read the text in the yellow box on the following page:

    http://www.bcae1.com/repairbasicsforbcae...



    Let me know what you find.

×

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Insignia lcd tv shuts off after 2-3 seconds


The TV seems to have a failing Power Supply. This could potentially be repaired but would be an out of warranty expense.

Dec 14, 2017 | Insignia IS-DVD1001 DVD Recorder/VCR

1 Answer

I bought the amp a few weeks ago and it worked perfectly for a couple of days and then for some reason the controlls just froze. the tap tempo light went out and the channel control light stayed the same...


Exercise your warranty IMMEDIATELY since you just bought it! If you bought this used, you LIKELY bought someone else's problem. The problem is likely in the digital effects area... probably a bad cable contact... but if under warranty DO NOT mess with it... return it for replacement or repair.

Sep 09, 2011 | Marshall Amplification Marshall MG30FX...

1 Answer

Amp not working


Make sure you have the amp grounded. I put one in last week and would not work till I grounded the amp to the car....Run a seperate wire to the car/truck.

Dec 22, 2009 | Power Acoustik Car Audio & Video

1 Answer

How long does the battery last


About 3 days, while bluetooth is on the whole time
About 2 days of intense usage (watching movies, listening to music using the speaker, etc)
about a week by normal usage (stanby, texting, etc)

Jun 15, 2009 | LG KU990 Viewty

1 Answer

Ipod Sound Quality Terrible


Go into settings, EQ, and try out some of the EQ settings.

Jun 03, 2009 | Apple iPod classic MP3 Player

1 Answer

Bass goes off when i turn up the volume


You need to install a heavier gauge wire to your amp and a capacitor. It works fine at low volumes because there is enough wattage from the battery to power the bass output of the amp but at higher volumes the amp does not have enough power.

Heavier gauge wire supplies more poer, and a capacitor stores a reserve of wattage for the amp to use so that it does not run out while blasting your tunes.

Jun 02, 2009 | Fusion FEW12PK Car Subwoofer

1 Answer

Fender Rumble 100 210 pop noise then hum after strong low e note


I just fixed my bass amp with a similar problem last week: the problem is related to a loose connection on the PCB board (likely).
A bass amp is a rough place for circuitry: the low rumble and power shake a bass amp more than a guitar amp.
In my case, the power transistors needed to be re-soldered and then the grounding bolts and screws needed to be removed and cleaned because the connection was bad. Remember that when two different metals needed for an electric connection are toughing, there is the likelyhood that corrosion WILL happen.
My bass amp did basically the same thing yours did: sounded good at low volumes, but at higher volumes it would act up.
In short, there is nothing you can do (unless you are a repair person): you need to take it to a local music shop and have a tech fix the intermittant contact problem: someone who knows what they are doing should only take an hour at most.

Hope that helps!
-mike

Feb 22, 2009 | Fender Rumble 100 Bass Guitar Amplifier

2 Answers

Why does my KAC-8404 cut off at high volume bass?


amp 101

1/0 wire to the amp or the amps will loose power

check the connections mainly the negative

wiggle the wires see if you get a cut out or not

a cap will help you give constant power to the amp and not allow them to drain on long bass notes

hope this helps

Dec 26, 2008 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

NAD C370 Right channel distortion


Sounds like you have lost the power amp transistor(s) or IC for this channel.

Aug 29, 2008 | NAD C370 2-Channel Amplifier

1 Answer

No bass at higher volume


Your battery should be fine! Although the amp might not be strong enough for the sub. All you can do is check the RCA cables from your radio to your amp as these might vibrate loose when you get to 17 volume and also check the monster cable from your amp to your sub asit might have vibrated loose as well.

Oct 21, 2006 | Pioneer GM-5200T Car Audio Amplifier

Not finding what you are looking for?
Alpine PDX-4.100 Car Audio Amplifier Logo

Related Topics:

164 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Car Audio & Video Experts

Robert Salgado
Robert Salgado

Level 2 Expert

200 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Marvin
Marvin

Level 3 Expert

85231 Answers

Are you an Alpine Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...