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Please, can you tell me where can I find an IC OUTPUT for a Sharp Optonica model SM4646C. The part # write on the IC is: RH-iX1056AF

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Hola necesito el integrado para el optonica sm-3510 el integrado es rh-ix1056af si lo tienen enviar correo a gilmor18@hotmail.com

Posted on Oct 01, 2014

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I have 2 pieces for you if you still need them!

Wim

Posted on Nov 29, 2009

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No audio


Sadly if the IC is so destroyed that you can't read the number, you either have to find someone with the same model or get the service manual. You will need to put the full make and model number on here if you want someone to tell you this IC.
Another thing you could do if the PC board has part numbers on IE: IC25 R45 etc. Is to contact Panasonic telling them the make and model plus the PC number and see if they can tell you what goes there.

Mar 01, 2013 | Panasonic Audio & Video Receivers

1 Answer

How to fix speaakers output


Speakers Output comes from these IC's



8_26_2012_1_56_23_pm.jpg


Determine each output stage and measure DC offset voltage.


If it is over 0.7V , have that IC remove.

Aug 25, 2012 | Panasonic SA-HE100 Receiver

1 Answer

Arcam A65 amplifier keep on go to standymode why?


Depending on the volume level and how many speakers you are driving factor into how the amp will react. Check the speaker wires for shorts, if okay! then we must look at the audio output stage, if the semiconductors are getting to hot, the satety circuits will cause a shutdown, if you run a pair of speakers the amp will run cooler, if you recently added more speakers that would explain the shutdown, if not! there is a problem in the audio output transistors and ic's that will need to be dealt with.

Apr 14, 2012 | Arcam Audio & Video Receivers

1 Answer

I have a Pioneer VSX-305 receiver. I blew channel A speaker outputs by allowing speaker wires to touch. Everything else works. Can anyone tell me what it takes to fix this. (I am an electrical engineer...


Without a Sams Photofact or a service manual I would go directly to the Power IC which is the largest Integrated Circuit mounted to a large heat sink. If you see any fuses they are probably for the power supply since any fused circuit on the speaker output would be ineffective because the IC would be damaged before the fuse would blow, but you need to check them anyway. Since the short was at the speaker output your problem should be at the final stage of amplification, which is the Power Amp IC. Prior to the early 70's you would have transistors mounted to a heat sink which could be individually checked and replaced. Then manufactures started to use the Power Amp IC which are more costly but eliminate having to find matched pair transistors. All you can check on the Power Amp IC is if you have an input using an oscilloscope or signal tracer and the power to the IC. If you have an input signal and power to the device with no output, I would replace the IC. Unless you have a test circuit for the IC you cannot test it completely unless you have a device like a Huntron Tracker or build a test circuit using a signal generator and a power supply to measure the gain of the IC with an oscilloscope. Short of ordering a service manual this is a good place to start.

Aug 15, 2011 | Audio & Video Receivers

1 Answer

I have no sound coming out of receiver all of a sudden. Connected speakers to another radio and speakers work fine. Everything looks fine on receiver just no sound. Oh, and the mute button is not on.


It is an indication that you have a faulty output ic.
Output ic is responsible for amplifying the audio from your reciever to sound output which is converted by your speakers.

If you're output ic is defective then definitely you haven't sound produce even your unit is working.

I've advice you to look for a qualified technician to checked the condition of your output ic and do some re-soldering for some dry joints on the board.

Thanks for using fixya...

Jan 09, 2011 | Sony STR-DE335 Receiver

2 Answers

Pioneer vsx_D710S whatever can be the input source,the flag " poweroff" apears and switch off the system. Seems to have no time rules, shut down frequency connected with hazard ...... No...


I'm not sure what kind of an answer you are looking for. If you are not qualified to do some soldering rework and ready to spend some money (could be as much as 50$) for parts, you better look for a professional service that in most cases will cost as mush (or more) as your receiver.

If you are still reading then here you are. This is a common symptom of a blown hybrid amplifier IC caused by shorting speaker output while it's powered on. There are two protection circuits for amplifier output, Overload and DC output. In your case, most probably, DC output protection is the one that shuts down amplifier to prevent further damage. Find schematics (service manual). To confirm this, look for amplifier inputs connector, measure DC DET. signal, normally it should be around +4.85V. If right after power up it goes down to almost 0V, then it is for sure a blown output on a Hybrid IC. Check whether receiver shuts down with that cable unplugged. If not than get ready to do some rework.

There are two big Hybrid amplifier ICs, one that outputs two channels (usually front left and front right) and 3 channels (for the rest). One of the outputs (if not more) one one of them (if not both) is blown. In most of the 5.1 Pioneer receivers 2 channel IC is PAC010A and 3 channel one is PAC011A. If you want to get original parts and will find those for less then 40$ each you are lucky. There are however cheaper replacements from SANYO, those you can find for around 10-15$.

Find schematics, unsolder resistors one by one that connect AMP outputs to DC detection circuit on each IC and check which one is blown. There are 2 for 2 channel one and 3 for the other. Usually if one output is blown all others on the same IC are blown.

There could be a chance that only one channel on IC is blown, if you want to fix it you still need to replace whole IC. Also, instead of spending on new IC you may want to sacrifice one working channel (center for example) to output the blown one (so you'll get 4.1 :) ).

Nov 11, 2010 | Pioneer VSX-D710S Receiver

1 Answer

Hi sir greetings can you tell me stk output ic number as someone has removed it hoping you can help me thanking you ...


There is a good possibility that we can assist with this, but we need the make and model of the unit in question. Please update this with that info and we'll provide the part number.

Thanks,
Dan

Aug 29, 2010 | Audio & Video Receivers

1 Answer

Audio out problem


sounds like your sound output ic may have gone.this is normally connected to a heat sink.also check that sound output settings are ok before you go further

Feb 08, 2009 | Sony STR-DB780 Receiver

1 Answer

I have a panasonic stereo sa - ak220 and you turn it on and comes up with F61 and a humming noise through the speakers


Remove cover and make sure the fan is ok...not clogged. Also, you could have a bad audio output IC or cold solder joints on the output IC. Use a volt meter to see if voltage is present on the speaker lines. If it is then your output IC is bad.

barneyluc

Oct 01, 2008 | Audio & Video Receivers

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