Input appreciated. Your post borders on prescience. To wit:
It can be difficult to abandon a lot of work, but the truth is: The magnet sheets did more in 5 minutes than hours of work and testing on screws and rubber washers combined.
Other things that make me want to go a different direction with this:
1.) Using only 2 or 4 screws to hold on the back panel might be 'ok' to a mechanical type, but it would probably seem too kludge like to normal people.
2.) As if to prove item 1 above, I found that heat had expanded the flange of the steel sheet metal back panel up and over even the chrome trim on the back of the bezel. It was tough to get the flange back in place and a little scary. I made this tool from 2 layers of magnet sheet with a thumb tab for easy removal. This is to keep a little bit of a gap at the tightest/worst spot of this sheet metal interference. If it's quiet with this in there, I may stealth it and leave it. If it's questionable, then it is only a tool to help keep proper gap until the screws are medium tight. The text I placed on the pic is too small. It says: "Top center screw" and that T3 needs dusted.
Why the rubber magnet sheet material? "When your only tool is a hammer, every job looks like a whack-a-mole." argh
3.) I decided that since the back panel really tries to slide down (gravity and all) when all the screws are loose, I would keep 3 O-rings each on the right and left sides to aid in keeping holes centered when the screws are loose so that I can...
4.) Use Techniwizard's technique of loosening all screws, bring the panel up to full temp and then tighten the screws medium tight. Nowhere nearly as tight as those 3 that were insanely tight courtesy of Panny.
(BTW, my final fix recommendation is probably not going to include the O-rings since it probably isn't going to include loosening ALL of the screws.
But T3's screws were already loosened, so I needed something for alignment short of laying the panel down.)
T3 is set on "bake" right now. I'll probably give it 2 or 3 hours, then tighten the screws.
While the easybake is ongoing, may as well address the "haunted" pedestal cover. When I took those 4 screws loose, I heard hair-raising creaks, pops, cracks and groans. The tone, timbre and location make this cover suspect for at least one "flavor" of pop.
Haunted pedestal cover viewed from the inside:
A felt pad kit is proven by Panny for killing noise in other areas, right? Ok, so in the below: Dollar Store "felt pad kit" on left, thinner craft store felt on right. The thinner stuff is in case the screws aren't long enough. I'll attempt to use this to quiet the pedestal cover only.
While T3 is warming up, I'll see if I can figure out which felt will work and get it on the "haunted pedestal cover".
edit 1: T3 has been warming over an hour now with the screws loose. There was one slight 'tick' only audible because the sound is off. As predicted by Cavit8, the 'tick' absolutely pales to insignificance because of the sound dampening of the magnet sheets. Ok, back to exorcising
the pedestal cover of its demons...
edit 2: The Dollar Store felt pads (the smaller thinner ones) are still too thick and not compressible enough. Here is why: The pedestal cover plastic is kind of thick yet Panny used the same tiny/short screws there. Not a lot of extra threads to play with.
The craft store scrap was half as thick and softer. In the pic below, I used garden variety clear tape to keep the homemade "felt washers" in place during assembly. Why: Once again, I want anything I do easily removable in case of swap or warranty work. The screws started fine and will have probably 3 threads of purchase once tight due to the soft felt compressing so much. The pedestal cover screws are loose right now for the remainder of the easybake period. Felt washers taped on:
I tightened the 4 screws just for a moment to see if there would be all kinds of creaking, cracking, groaning or other Haunted House noises as there was when turning the screws in the OEM pedestal cover. There was not. Dead silence. Once again, screws are loose until the TV is warmed up.Note regarding felt: If you don't feel like installing felt washers
, I suspect there would be no ill effects of simply loosening all 4 pedestal cover screws. As in: Take the screws down to point of contact, then back them off a half turn or so. ***For clarity, these are the tiny screws that hold the plastic cover on. NOT the large structural screws that hold the pedestal to the panel.
Added note: If I ever get to where I want to "tune" out a possible future buzz problem, the set has been super quiet during warmup with nothing more than magnet sheets and loose screws. I'm gonna try tight, though, since loose screws "feels like" an inelegant solution.
BTW, I installed M8 wall mount socket head bolts and washers - no rubber - and tightened them last night. This is so that anything that might work for my pedestal mounted TV from that time forward might also work for wall mounted TV's.
Very impressed with how quiet it is. Amazed, actually. I hope that is attainable after the screws are tightened, too. Headed for the finish line here...??Edited by MountainMichael - 7/2/13 at 1:09pm