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Powering on but no audio output.

No audio even after replacing the STK 411-240E

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Posted on Jan 02, 2017

SOURCE: set dead

That code always be for audio amplifier IC damaged.Change it

Posted on Jul 09, 2008

  • 319 Answers

SOURCE: set dead

Replace output ICs

Posted on Aug 03, 2008

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1 Answer

My amplifier has no audio


Power output stage went out, maybe the big ic named STK or has a transistor output module? please add more info to help improvement...

Sep 11, 2013 | Teac Audio Players & Recorders

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I need Original Sansui CR-M7 Cassette Receiver stk aideo ic


Just order the stk????? part number printed on the IC from a supplier. Try typing it into Google, there will be loads of suppliers offering the sale.
Hope that helps.

Feb 19, 2011 | Computers & Internet

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F61 error message


F61 IS THE ERROR CODE FOR A FAULT IN THE AMPLIFIER STAGE OF THE UNIT, if the power fan or supply is okay then THE MOST LIKELY CULPRIT IS THE AUDIO OUTPUT IC, WHICH IS A MULTI LEGGED DEVICE SCREWED TO A PIECE OF METAL USED TO COOL IT, IN PANASONICS ITS PREFIX WILL PROBABLY BE "RSN" BUT IT COULD BE "STK", MAKE A NOTE OF THE NUMBER AND SEARCH ON LINE, DONT FORGET TO CLEAN OFF THE OLD HEATSINK COMPOUND ON THE HEATSINK AND REPLACE WITH FRESH.f61 means theres is a fault with audio output ic, usually there is dc on one of the speaker output rails, replacing the audio output ic will usually cure this but check speakers and leads for shorts before reconnecting to the unit

Sep 28, 2009 | Panasonic Televison & Video

1 Answer

My onkyo tx ds747 is saying protect even if i dont have anything plugged in to it! can you plz help me


Hello

maybe you have defective power transistor output and this is shorted, or the problem is in the power section like shorted diode shorted capacitors or open circuit may cause this, and the STK IC if shorted you got protect warning..

Angel
Thansk...

Aug 02, 2009 | Onkyo TX-DS747

1 Answer

Set dead


That code always be for audio amplifier IC damaged.Change it

Jul 09, 2008 | Panasonic Home Theater System System

1 Answer

Set dead


Replace output ICs

Jul 09, 2008 | Audio Players & Recorders

5 Answers

No audio output


check whether the plugs are inserted properly and check whether the pins are working properly

Jun 20, 2008 | Kenwood VR-407 Receiver

3 Answers

Kenwood KR-4010 (late 70's vintage) with signal to IF amp but no output


Don't bypass the relay contacts. They serve to disconnect the amp stages from the speaker if a DC condition is present, and in doing that, save your speakers form damage. Check for a DC offset condition on the junction of the emmitter stabilizer resistors to the STK0040 on each channel. They will be 0.47 ohm power resistors(2 per STK) connected to pins 3 and 8 of the STK. Anything substantially greater that 100mv here generally indicates a blown STK. Don't bother to change both, but just the one that is faulty. Another common problem for this age of amp. The high silver content in the legs of the transistors allows for "growth" between legs and internal connections of the transistor. Check for "black death" on the legs of transistors driving the STK. . . I tend to replace them if in doubt. If you need expert advice, comment me back. I am an audio specialist.

Feb 03, 2008 | Audio Players & Recorders

3 Answers

Aiwa mini-component


DEAR

I UNDER STAN YOUR PROBLEAM VERY WELL,
PL CHECK FOLLOWING POINT'S

CHECK MUTE SIGNAL PATH WITH YOUR MAIN AMPLIFIER
CHECK MAIN AMPLIFIER STK BY REPLACING IT
CHECK MAIN SPEAKER'S.
CHECK BIASING CIRCUIT WITH STK INPUT
CHECK HEAD PHONE CONNECTOR BECAUSE IT GIVES OUT PUT TO MAIN AMP.

THANK YOU

Jan 24, 2008 | Aiwa AWP-ZX7 CD Shelf System

4 Answers

Pioneer VSX-816


With the receiver off, press ENTER + ADVANCED SURROUND keys continuously for 2 sec. and it will tell you the fault it encountered. Even if it has a short, it will still protect the speakers; however, it is still a good idea to disconnect all speakers before doing this.

Dec 20, 2007 | Pioneer VSX-816-K/S Receiver

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