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My Pioneer A 449 stereo amplifier does not switch on. Fuses are okay. Power circuit is okay. I don't have a service manual so can't proceed to check further.

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5 Suggested Answers

  • 102 Answers

SOURCE: VSX-D608 amplifier (Pioneer)

click on link then printer friendly then documents. It should give you the original set of manual.

Posted on Dec 26, 2007

  • 2296 Answers

SOURCE: Fuse locations on Technics SA-DX930

This model It does not appear to have F2 anywhere, I've checked the service manual and could not find it nor is listed in the parts list.

Posted on May 14, 2008

  • 19 Answers

SOURCE: I own an Pioneer CD

On the first board (where the power enters) there is a tall 3 pronged switch, if you turn the board over and solder a piece of wire to the 2 outside prongs, you will find that the Amp works normally apart from that the display reads Cd closed when in Cd mode.

Posted on Jun 22, 2009

caroldon
  • 17129 Answers

SOURCE: My pioneer vsx-519V-k amp won't turn on. Just

Have you checked within the set, the fuse and if the standby circuit is working. thre could be a failure of this sub votage which is required for the switch on of the main power. If you do not have any standby indication you must check this section, however if you arre getting the standby you would have a failed output or a shorting that is triggering the error amp to swtich off. If you are familiar with the circuits you can check but I would suggest that since you will need more experience to look into the main board for tracing the fault. In such case check for the service centre nearest to the place you are in using a google search for Pioneer - Audio systems- sevice. Helpful I hope. Good day.

Posted on Jul 06, 2010

  • 334 Answers

SOURCE: Hello, sorry for my english,

Try searching somewhere like DiploDocs . com website for a service manual. It seems to me you know what you are doing, all you need is a service manual :-)

Best Of Luck

Posted on Sep 03, 2010

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1 Answer

Need to know how to fix the windows in the stereo in my 1996 Lincoln Continental.all the fuses are fine, I don't know what to do next


None of the windows work ? You say fuses are good , which fuses ? Did you pull them all out an look at them ? Did you check for power - battery voltage at the window switches ? There is a driver door module involved !
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1 Answer

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Check fuses on the amplifier's power wire to make sure it's not blown. Replace it if necessary. Also check for blown fuses on the amplifier itself. The problem could also be the amplifier's remote wire. This wire (Usually blue) needs to be wired into the stereo's power wire (usually red or yellow).

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My car stereo shuts off when i adjust the volume of my amplified subwoofer


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1 Answer

Directed 2400 amplifier turned off and has not come back on?


Hi, Based on your post/description, three possible reasons: 1. There is no power going into the amp. The fuses may be good but there is no +12VDC in the big red wire. You have to use a voltmeter to check if there is 12V at the end of the line/wire before it goes inside the amp. In some cases, the fuse might be good but there is corrosion on the fuse terminals and the metal contacts of where it is placed; 2. There is no switching signal to activate/power on the amp. In some setup this is a blue, yellow or orange wire. This can be activated by either the ignition switch of your car, the headunit/stereo, or even a manual on/off switch. This has to receive a 12V also to activate the amp; 3. Internal fault of the amp. The big red wire has 12V, the fuses are good, there is signal 12v to activate amp, but still no power; there is something wrong inside the amplifier. It has to be opened up and diagnosed. This may involve component level repair, circuit analysis, electronics and soldering so you might be better off seeking the services of a qualified professional. Hope this gives you some ideas and work out for you. Good luck and pls post back how things turn up. Kind regards.

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