I was under the impression that this diode problem was well documented within Panasonic and replaceable on a house call basis. Hopefully this is still the case.http://www.avsforum.com/avs-vb/showt...ighlight=panny
"Technically speaking, this is part of a protection circuit that shuts down the PDP if any of the working voltages dip below 75% of their nominal value.
This particular problem is due to the shutdown circuit being too anxious to do its job. It had to be mellowed a bit, made less sensitive, given an electronic traquilizer if you will.
All units since Sept 1 production have had the improved parts. More than 99% of the original parts stock were well within specification and will last as long if not longer than the new ones.
All service parts and boards have been changed to the newer stock.
To answer your question, the consumer group will probably send an authorized servicer with a replacement module if needed to perform the update on site. Broadcast units may be serviced at any of the regional centers and also at authorized Broadcast service centers now in some major cities nationwide. Check with your nearest region for locations."