There is a replacement IC available, resoldering is only a temporary fix.
You have to change the position of two surface mount zero-ohm resistors, and
replace IC9374 with the EEPROM Pioneer supplies now. I have done a lot of
these with no repeat service on any. I was not aware of any exchange
program, it was repair by changing that IC per a service bulletin. Great
reciever once that is fixed, though.

--
Jammy Harbin
J & J Electronics, Inc.
227 S. 4th St.
Selmer, TN 38375
731-645-3311
"Mark D. Zacharias" wrote in message
...
There is a known problem on these - a RAM IC needs resoldering. Expect a
recurrence after a year or so. Not for the novice - the foil runs at the
IC
are too easily damaged. It is on the DSP board, but the board is no longer
available - since Pioneer went through all of them for this problem. For a
while Pioneer was exchanging the receiver for a newer model - but I'm
pretty
sure that program would have ended by now.

Mark Z.

--
Please reply only to Group. I regret this is necessary. Viruses and spam
have rendered my regular e-mail address useless.


"Jeff" wrote in message
...
I have a Pioneer VSX-27TX receiver that works fine in all respects
except
that it takes about 20 minutes before audio can be heard from any of the
outputs (main or surround.) During the 20 minute "warm-up", the display
is
active and all control functions of the receiver seem to work. I can
use
the tuner, select inputs, enable/disable surround modes, use the remote
control, etc. Also, signal is present at the tape output during this
time,
but not at the preamp outputs.

Once 20 minutes (or so) has passed, the audio almost suddenly starts
playing.

Whatever is wrong, it seems to be temperature related, as the "warm-up"
time
is shorter if I cycle power after the receiver has been on for a while.

Has anyone seen similar behavior from this unit? Any tips as to what
might
be wrong? Does anyone have a schematic for this model?

Thanks,

Jeff