Question about Pioneer VSX-27TX Receiver

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No DTS sound / RESET

Hi, I got a VSX-27TX recently, and this unit is not working with DTS sound. I already have tried many discs on 4 DVD players (configurated to dts), as Panasonic S35, LG DR1F9H, Nakamichi DVD15 and DVL 909 hacked for dts out, but NO DTS sound. Already changed the in coaxial/optical digital ports 1 to 4 to DVD/LD and TV/SAT modes, with digital and auto signal select. No sound, only a low noise "tick" on L/R front speakers (the light on panel shows front L/R for DTS only). The big DTS display on panel not appears, only the tiny beside the speakers indicator. Dolby Digital is working fine. Maybe there is a reset for this receiver? My old D906S have the reset botom. I will thank a lot for any tip or the definitive solution.

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  • thexder Oct 07, 2007

    Well, I have solved this problem :)
    I replaced the condensers arround DTS circuit at DSP board (C9393, C9383, C9376, C9372, C9360, C9343) and now all working fine!!

    Thanks for Miguel in post a tip for this.




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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

Posted on Oct 06, 2007


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Without more info one can only speculate.

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