Ray Andraka wrote:

On the other hand, I've got some horrendous stories dealing with
avionics shops that applied bandaid fixes to radios, and the warranty
most shops I've dealt with offer covers only the repair that they did,
and expires more or less as soon as your wheels leave the ground. From
the avionics shop's perspective, yeah, Narco gave them a raw deal and is
hard to deal with because they won't let the avionics shops service the
radios.

FWIW, one of the avionics shops I mention is good enough to have a
popular "Flying" columnist 1300+ miles for a GPS installation. They
don't do band-aids... G

Every one of our failed EL displays was replaced by Narco's "factory
service". We also had audio output issues were Narco returned the
radios and blamed the panel and wiring. On both occasions, the radios
WERE screwed up, and we paid Narco AGAIN to fix them.