Well the honeymoon is over with my one day old 5674, white vertical lines keep coming up and then I lose the picture entirely. Sometimes I get a psychedelic picture and the remote and side buttons won't work. The only way I can turn the set off is by pulling the plug. Well I pulled the plug for the last time this morning and I'll have to call Sammy. I don't want to take the set back to Costco. I thought all the problems were with the 63 series units, wrong!
sorry to hear about your problems with the 5674. i too would try to return it to costco for a replacement, although it is a pain to have to haul the huge box to and from the store. i've been debating whether to pickup the 5674 from costco but so far have held off, hoping to catch a glimpse of the new HLR 67 and 68 models coming out.
Returning things to Costco isn't always straight forward. I had to get help loading the assembled stand and set on our truck and that was no trivial matter. Costco gave me a full rebate on the set and stand combo, and credited my American Express card. American Express didn't credit my card right away and that became a big hassle, but I must say one of the Costco managers took American Express to hand and within an hour I had the new set and boxed stand loaded in our truck. The new set worked great right out of the box and assembling the new stand was a peace of cake now that I'm an experts at it.