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I have a Pioneer SX-229 Amplifier and recently it has developed intermittent crackling in the speakers. Fiddling with the speaker connector block at times makes the crackling go away only for it to return a short time later. The amp works fine in all other respects. Suggestions please.

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  • RobZ
    RobZ Dec 17, 2014

    I think I cracked my problem yesterday. Further checks showed that the problem occurred on the A and B speaker outputs. So I either had a problem in the speaker selection switches or the Speaker Protection relay as it is common to both A and B outputs. (I did make an assumption that the driver stage is OK). So I went about changing the relay and played the unit for several hours with no issues. Checked the relay for resistance across the contacts with coil energized showed a resistance of several ohms and not stable. Also I might add that if anyone is not a tech then tread carefully as there are nasty voltages when the covers are removed.

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Posted on Jan 02, 2017

techman
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SOURCE: static and crackling sounds

Sorry to burst your bubble my freind but things do wear out as you had plenty of life out of this unit.. Your problem is a transistor or a driver IC is breaking down under a load and heat and will get worse to where you wont be able to use the unit.. It will probable cost you in a range of 200 bucks or .more!as there is no quick fix for a solid state unit that has no user serviceable parts inside. Its just not replacing the bad part , its the hooking up to the load resistors then seeing that several other parts are not up par and having to start rebuilding the amp statges of your reciver.. If its more then 8 years old Time to landfill it and get a new one .. Put it to rest. It dosent owe you anything as its been loyal to you all these years!! Good Luck

Posted on Jul 27, 2006

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SOURCE: Pioneer SX-750 Old School Need Help

It could be a dirty control or switch, working them back and forth could prove that. Other than that, It's likely bad outputs. A unit that old may have transistors for outputs but might be IC's. Transistors can be tested with an ohm meter to see if they're good or not. Also if it has transistor outputs, they may have a small value resistor on the Emitters, check those as well.

Hope that helps...

Geno

Posted on Mar 07, 2008

SOURCE: crackling sound through speakers while watching dvd movie

Yamaha Rx-V361 Firmware Upgrade, A/V-Receiver/-Verstärker - HIFI-FORUM

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SOURCE: pioneer sx 217 home theater system

you have to put the red and white cords into the tv section of the receiver and the yellow cord into the dvd console.

Posted on Jun 20, 2008

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SOURCE: Pioneer VSX-36TX popping and crackling during warm-up period

I have the exact same amplifier with what sounds like the exact same problem. I opened up the amplifier, and while it was powered on started tapping around until I heard the popping and crackling suddenly increase. I was using a piece of wood and the plastic part of a screw driver for this. The popping and crackling suddenly burst out onto all channels when I was tapping on the DSP board (encased in a metal enclosure to the very right of the amplifier).

I took off the metal enclosure (with the receiver turned off, of course :), and with the receiver on, and started tapping around the DSP board, and I found that the biggest crackling effect was achieved when I tapped on the Cirrus Logic CS493292-CL chip which does all the decoding and switching.

I detached and took out the DSP board and looked at it very carefully but of course couldn't find any bad connections. I tried resoldering all the feet of the Cirrus Logic chip and many many components all around to no avail.

Finally I tried applying pressure to the chip while the popping was going on, and it stopped. Further investigation revealed that bending the board around the chip produced the same effect.

For the life of me I couldn't figure out why bending the board eliminates the problem, but my solution was to put a piece of eraser wrapped in masking tape and taped to the Cirrus Logic chip, and two other pieces on the back of the board in such a way that when the metal enclosure was replaced onto the board, it put gentle but firm pressure onto the Cirrus Logic chip and at the same time bent the DSP board slightly.

It's been a few days without popping, clicking or static, but time will tell. Good luck!

Posted on Feb 05, 2009

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