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The original problem with this set was a dim, out of focus picture. One of the HV tubes had this white crust in a bellowed shape on the inner glass wall of the tube, where the part number is. I think this one got gassy, plus some other tubes in the HV section. The seller was the one who powered it up, but he was a TV repairman back then, so I feel he took good care of this set. The chassis was in good condition and everything was wired up the way it should be. He even had the photofact inside the cabinet. I was really lucky to come across this set and the seller.
From my electronics therory I have, connecting the earth ground of the IEC power entry jack to the chassis seems like it'll cause no harm. AC from the mains is completely isolated via the power transformer, and when I replace the line filter capacitors with AC rated safety caps, I see no reason why it wouldn't be pretty safe. Infact I'd probably prevent most AC related damage by earth grounding the chassis, like it's done on newer equipment. Also, the dinky power cord is thin and dinky, and really doesn't seem safe for a 375W receiver.
I realize that putting in an IEC power entry jack will take away some of it's character, but I also want this set to be as safe as it can be. That's why AC rated line filter caps are used in place of the older ones. It won't really do much physical damage to the chassis, just enlarge the hole so it fits, same with the back cover. Not only for the added safety feature, but the power cord can be completely removed, which I prefer because it doesn't get in your way when you remove it. I could get the two prong AC connectors too, and install it just as easily, but I thought the ground would add extra safety. Anyone know if I'll let the smoke out by doing this? Will I create a ground loop that will cause me major problems in operation?
Thanks.
Jonathan
Last edited by Jonathan; 10-23-2005 at 02:03 PM.
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