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Is there someone here that could repair this??

richamor

richamor

amateur house husband
I have a Pioneer Elite VSX27-TX HT receiver that has quit on me. Checking around the internet it seems that I am not alone and the problem is common on these receivers. This is the solution I found:


"Replacement for the old Pioneer device located at location IC 9374, should be done with the part PD6381A from Pioneer Electronics. (you need surface mounting soldering skills)

On doing so, you 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 on a VSX-26TX and VSX-27TX, it might also work in the VSX-908, VSX-908RDS and others as long as the same DSP board is used"


I pulled the board and noted that this is waaaay beyond my limited capabilities. here is a pic of what is needed.



I have circled R9371 and R9371. The IC 9374 is also circled and indicated. I can source parts if necessary. I just wouldn't even attempt to solder this.
 
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Replacing those components would be very difficult. I would contact Pioneer and see if they have a replacement board with the updated components.
 
I've done it in modifying ham radio gear to allow out of band reception... it's not too hard. Basically you want an iron with a wide-ish tip and a pair of tweezers. Heat the 0 ohm resistors at both ends simultaneously and lift them away.

If you lose the 0 ohm resistors or they are damaged, do not panic! They're 0 ohm, after all -- they can be replaced with a small piece of wire or just a solder bridge.

PLEASE practice this on a dead motherboard or something with SMT parts first!!
 
I quickly Googled " replacing surface mount devices " and found this link, among others: http://www.circuitrework.com/guides/8-2-1.shtml

You'll need to plan on some tooling up for this. Expect to destroy the old chip in the process unless you invest in a hot-air type of desoldering station.

Totally agree on the practicing on other boards first.

Cheers,

David
 
Its not hard at all if you have the stuff to do it. I have done stuff like that with using an ungar heat gun (for removal) and a very small tip on my soldering iron. Just takes practice and proper tools. A microscope or loupes are always good for inspection.
 
quite an easy job to do, they are nicely sized SMD's ive done some of the new generation resistors the other day that are 1/4 the size of your ones!

Trick is to heat both sides at once, though i have done it before with 1 side at a time but its not as easy. Keep the heat to a minimum and dont play with the solder pads too much as they can be ripped off quite easily but you have a fair few test points around so you look safe.
 
This is a Surface Mount device. You need a hot air rework station to properly replace that part. Not too many shops have them. It would likely be better to get the board swapped and cheaper. :tresbon:
 
KentTeffeteller said:
This is a Surface Mount device. You need a hot air rework station to properly replace that part. Not too many shops have them. It would likely be better to get the board swapped and cheaper. :tresbon:
Click to expand...

oh me dumb i thought it was just hte link resistors that needed changing :( yeah IC removal aint easy with only an iron though i have done it before, going to need some rework done.
 
You don't need a hot air station to remove and replace that device. I used to routinely do 100-pin PFQP packages with nothing more high-tech than a standard Weller station.

As I said before, if richamor wants to send me the board and the part, I can change it out for him.
 
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