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Looking for power ic no SI1125HZ used in amlifire section of pioneer 3in 1

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Http://parts.o2xygen.com/parts/s/76.html
Paul

Posted on Jun 13, 2009

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6ya6ya
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Posted on Jan 02, 2017

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The TV powers on to standby, flips to ON for about 1 second with no picture, then shuts down. The HD Assy LED turns red at the time of shutdown but the other LED (PS) does not blip. Is this an...


Hi David,

This is an indication of out-of-regulation in the power supply section. The very common caused of this fault is the leaky electrolytic capacitor in that section. It will drop the supply from normal voltage and will disable the unit. Sometimes it has a bulged/dome at the top but not all, it is better that you have a capacitor checker/tester to determine its condition. Also, bad solder joints can produce the same symptom, it is hard to spot, you should use table lamp/portable lamp for finding the cold solder. Secondary reason of fault is the open fuse/fusible resistor in series with the output of regulator IC/transistor, shorted/openRegulator IC/transistor, shorted zener diode(all are in the power supply section) and the microcontroller. Best that you check the output voltage of each regulator to determine where the fault came from and narrow the job.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

Also check if your unit is under warranty /extended warranty, avail it because the manufacturer of your unit will fix it for free. Don't open the back panel, this will void the warranty.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Feb 19, 2011 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Hi. our problem with our pioneer sd-p55a3 is that it wont turn on. when you press the power button it clicks to turn on, but then nothing happens. can you help us?


Look for Blowed Fuse on the Power supply board located in the middle of the board 6.3amps and if its OK then replace Both of the STK ICs Black ICs will have PN STK392-110s use 150s Mats Electronics.com has them these ICs retail for $55.00 each your cost $9.95 1-800-628-1118

Sep 18, 2010 | Pioneer SD-P55A3-K 55" Rear Projection...

1 Answer

Pioneer sd-532hds. the red light is on but when


STK ICS 2 of them replace Both STK392-110 use 180s Mats Electronics has them $10.95 each
1-800-628-1118

Feb 25, 2010 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

I HAVE DISTORTION SOUND FROM MY PIONEER DJM 500 MIXER


The first thing that comes to mind is that these units usually use op-amp ICs for buffers on the output lines. These ICs are either defective, or you have lost one of the power supplys. In any case, this is not a simple thing to trace without some test gear. I suggest that you bring this to an audio repair shop. If the ICs are defective, they cost less than $1 each and you will need at least 2.

Dan

Sep 14, 2009 | Pioneer DJm500 Professional DJ Mixer...

1 Answer

Dsc-363 displays code " oc err 1 "


It's output power amplifier ic problem. change ur output ic

Mar 08, 2009 | Pioneer DV-363 DVD Player

1 Answer

Sound DVD/CD noise


is the noice come while playing the cd, the problem can occure power amlifire section.first of all check power supply board.

nuwan.

Jan 19, 2009 | JVC UX-P550 System

1 Answer

Pushed power protect


speaker protection turned on.it can be happend because of bad power amlifire section.can you remoove the powe ramp board with large heatsink.its very easy to repair.and i can help.
nuwan

Jan 09, 2009 | Sony Multi-System Mini Hifi Systems / DVD...

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I just bought an old vintage pioneer sx 737 receiver and cannot get NO fm reception, and only 2 or 3 on am....HELP!!!!! I have used antennas as well...Charlie


Even with just a short wire, this model should be receiving a number of stations. Is there an IC inside marked LA7001 or something similar? If so, it is probably defective. This is a common failure. I'll look up your specific model later to confirm.
Dan

Jun 01, 2008 | Pioneer Audio Players & Recorders

1 Answer

Pioneer cd player is saying power ic damaged


The power IC is part of the amplification circuitry inside the head unit.
I would suggest 3 options:
1. Attempt to fix it yourself (don't do this unless you're good at soldering/desoldering, dissasembling and reassembling things, and can recognize what the IC would look like).

2. Remove the head unit and send it out for service/replace it with another.

3. If the preamp outputs still work and you have an external amplifier - you could use that. This isn't the slickest way to have a sound system operate but it won't cost you anything.

Feb 24, 2008 | Car Audio & Video

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N70 network


simple, reset your settings or soft reset but first backup your phone memory when finished get your mmc and resetnit....

Dec 07, 2007 | Nokia N70 Cellular Phone

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