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
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
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The speaker cutout feature whenever the headphone jack is connected is a hard-wired feature of the headphone connector, and cannot normally be bypassed without further electronic circuitry and the associated surgery to install a custom modification in the TV. In order to keep the TV speakers on while using the sound elsewhere, you will have to take the audio output from the IR Audio port, if there is one.
Make certain the connections to your speakers are good. Test each of your speakers with a 1.5 battery. Put the + and - ends of the battery to the + & - of the speaker (not connected to amp). Just for a short time only - the speaker should "pop".
If they are good you might have damaged the headphone socket on the machine. These disconnect the speakers when the headphone jack is inserted. Sometimes the contacts break or become bent out of place thus not reconnecting the speakers. This can be easily fixed and is not an expensive repair. The only exception would be if there is a switch to switch off the speakers on the unit itself. But if in the past you have put a headphone jack in the unit when the speakers were operating and they cut off then a faulty jack socket is to blame.
There is a problem with the headphone jack or there is a audio output problem, get some electronic contact cleaner attach straw and spray inside the jack, push the headphone jack in and out quickly and spray again and repeat, this should clean the contact points, if no sound, audio output should be suspect.
This I have run across a number times, it is one of two things, the audio output ic pack is bad in the unit, or the earphone jack is clogged up. Get a small can of contact cleaner attach straw, give it one or two shots and use your headphone to push it in and out several times to clean the points, if this fails you must change the ic.
Does it have a speaker output - I'm sure it does? More likely it's the 3.5mm. which may look like for headphones. The RCA are for low level signals so therefore it's not for the speakers. Do the speakers have two wires a piece? If they are, then there should be speaker output clips on the stereo to connect to. If they look like phono plugs then they go into the speaker output jacks.
It can if your computer has a 3.5mm jack audio imput.
What you need to have on your unit is and audio out socket. But if it doesn't have one you can use the headphone output. Then all you need is a lead. If you have the output sockets you just need a 3.5 jack to two RCA phono plugs one. If not you will need a 3.5 to 3.5 lead.
If using the headphone output, keep the volume low, use the computer recording device to adjust the signal level. NEVER turn the volume up high. Again if you are using the headphone output set tone controls to neutral, otherwise you will have either too much bass or treble on your recordings.
You can use the computer speakers to monitor the sound. Or you can get a headphone adapter plug that will allow to jacks to go into the headphone output of your unit, so you can connect a pair of headphones, but as I said don't mess with the volume control.
The lit indication ("amp bars") proves that the aduio signal is getting through the unit's circuitry @ least to that point; lack of sound @ the spkr & headphones indicates the amplifier portion of the circuitry is either inoperative or disconnected from the load (i.e., either the speakers, or the headphones). A common cause of this type of problem cropping up unexpectedly is the headphone jack itself; in most products of this type, the audio path from the amplifier output to the speaker connection runs through the headphone jack, so the the speakers may be "turned off" when the headphones' plug is inserted into the jack. If the unit's owner uses headphones regularly, the most common problem to be found with the jack is loose solder connections to the printed circuit board's traces from the jacks' lead(s); in units with this problem whose owner's irregularly use the headphones, it's more common to find oxidization of the electrical contacts within the jack itself.
It sounds as if you are plugging the base into a standard headphone jack located on the Television set.
RCA Headphone jacks (incl mini) automatically stop the sound output to the main speakers on almost every set I have seen.. or home stereo.. etc etc
In other words you can take a standard RCA jack.. with nothing connected to it.. plug it in while the music or sound is coming out the main speaker.. and it will cut off the output to those speakers..
If you set has audio outputs on the back.. preferably Fixed Audio Out .. you will need to connect your base unit to those.. turn your set volume to 0 and adjust the headset volume using the control on the right ear-cup.
If you have variable audio out.. you will need to go into your TV sets setup menu.. turn off the speaker.. and turn up the set until you achieve a signal and decent volume through the headset.
If you are missing these connections..your current “work around” is your only solution.
I have experienced a similar problem with my Sony STR-GX57ES and took it to a certified tech only to find it needed the power supply replaced. I opted to hunt down a compatible power supply but have been unsucessful thus far. That being said I picked up an STR-D665 for next to nothing and found the power supplies to be quite different (you would hope so any, with the ES meaning Elivated Standard and all) but with the D665 working flawlessly I'd rather have something working than nothing. Good luck!