Question about Pioneer VSX-27TX Receiver

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Hi. I am looking for info on where to relocate R9371 and R9374 to after replacing IC 9374. Pioneer didn't send any info with the new chip. Can anyone help me out? Thanks Roy

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you can locate the R9371 & R9374 beside or the same circuit of the IC 9374 Very near not far to IC 9374.

Posted on Nov 22, 2007

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Where can i find diagram for bad soldering for pioneer elite VSX-27TX stereo receiver?

You really should be an expert to do repairs on these recivers but if that is the case, you can get the maintenance manual here:

Jan 02, 2016 | Pioneer Audio & Video Receivers

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I have a Pioneer VSX-D412 reciever, and connot get my b channel to work. Only my A channel works, and I'd like to get both or all 5.1 working. And no I don't have the manual for the system.

In case you didn't see this on the other post, it is not the function of unpaid Fixya Experts to do the web searches for or read the manuals to those who can do it themselves. Most questions submitted to us would find answers immediately if they were typed directly into a search engine.

If you don't have the manual I recommend you get it. There may be other questions. A search for "Pioneer VSX-D412 manual" finds it.

What sources fail. How is it with test tones? have you isolated (swapped) the speakers?

Here is the service manual if you should ever need it.

Aug 04, 2011 | Pioneer VSX-D412 Receiver

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Pioneer Elite vsx-27tx receiver with no bass!?

There may be a subwoofer mute function on your amp. The sub out is nothing more than a preamp output with a low frequency response. It is meant to be amplified by an external amp. Either check your powered subwoofer for operation or look through your operators manual for a sub mute function.

Feb 11, 2010 | Pioneer VSX-27TX Receiver

1 Answer

No audio output

THE FIX - to audio problems that persist with the VSX-29TX and others using the AWX7272 DSP board is to replace the ROM on the DSP. My unit started failing on and off after 10 years of use! The intermittent DSP board is an Extremely Common and irritating Problem for this model! The replacement IC,(2) resistors + shipping and handling totaled $49.65 and my unit is finally fixed correctly! Don't believe other posts that you can get away with re-soldering; it will continue to fail again and again! Details of fix are:

Replacement for the old Pioneer ROM located at location IC 9374, should be done with the part PD6381A from Pioneer Electronics. You will also need to move (relocate) the 2 resistors (0 Ohm resistors) located at R9372 and R9371 to locations R9374 and R9373.

This component update applies to DSP boards marked as AWX7433, AWX7272.

This fix is validated (from Pioneer) on the VSX-26TX,VSX-27TX,& VSX-29TX it might also work in the VSX-908, VSX-908RDS and others as long as the same DSP board was used.

Let me caution and stress that surface mount soldering skills ARE REQUIRED to do this update! It also doesn't hurt to have excellent vision and/or an eye loop or microscope to check your work. Original ROM's were subject to timing changes internal to the part as a result of HEAT. This model does get HOT! The program was also modified as a further safeguard to re-occurrence.

Jan 30, 2010 | Pioneer VSX-29TX Receiver

1 Answer

RCA Model RT2500/RT2500R Audio/video Reciever Approx. 9 years old. Takes approx. 4-5 minutes to warm up. then works great. Seems to keep taking longer. Anything I can Do?

It may be only some tired capacitors in the power supply; they can cause this kind of problem.
Parts are probably the lesser cost; you will need a tech with a little bit of gear to find the culprits.

Dec 18, 2009 | Pioneer VSX-27TX Receiver

1 Answer

I have a Pioneer VSX-454 reciever, both 1.25 Amp fuses blown

blue two legged varacter on power supply board needs to be replaced

Jul 12, 2009 | Pioneer VSX-454 Receiver

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My pioneer reciever says overload

Bad news: it probable needs an amp ic (or output transistors). Unless you are very technically minded it's a job for a pro.

Mar 05, 2009 | Pioneer VSX-D509S Receiver

2 Answers


Maybe the audio amplifier IC is damaged and you gotta change it.Good luck.

May 26, 2008 | Pioneer VSX-D308 Receiver

1 Answer

No DTS sound / RESET

Hi I have a Pioneer VSX D908S which is basically the same amplifier as yours with the difference that the one I have has no THX certification, as a matter of fact the service manual is the same, and mine has the same problem. The prblem is located in the DSP board, if you are able to remove the bonett, you will see on the right side a metal cover, remove it, once you have removed it, look for a IC9374 it is located, -looking this board in front to you- almost at the left upper corner, this IC has the PDK042A on it, with a soldering iron resolder this circuit. This is common problem with this pioneer amplifiers, and this procedure not always works, the final solution is to buy the DSP board but it is expensive. Good luck! Miguel

Oct 05, 2007 | Pioneer VSX-27TX Receiver

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