It worked for me too - and some detailed instructions
Cavette, thanks a lot for the tip!
I took apart my Samsung (lnt4661fx/xac) 46" LCD TV as per your suggestions, applied the TAB bandaid and seems to be working fine so far. The problem used to happen all the time before, and it's been running fine all afternoon since the repair (I powered it on and off many times). Fingers crossed from here
Interestingly, I was unable to locate the "broken" TAB bond. When I took the TV apart and plugged it in while apart to test, it worked all the time. It's as though having it all apart healed the problem. Touching the tabs made no difference, there was no distortion regardless of what I did. Regardless, I applied the suggested padding on a couple of bonds on the side where the problem happened all the time in the past.
I took some pictures along the way and posted here:
Hope it helps those brave enough to try this. I'm not an expert myself but I'd say you need to be very careful, there are a couple tricky spots but all in all it's fairly easily doable.
Here are a couple notes:
1) First put the TV screen side down on a flat soft surface and take off the back plastic cover
2) Now take off the speakers, metal plates, side panel and support bars to free up the front plastic panel and the LCD panel with the metal frame. I've highlighted their placement in the picture. I didn't have to take off anything else. I disconnected the front panel power-on and speaker cables because this makes it easier to handle the parts. I did not disconnect the main power supply cable as I didn't want to take off the big metal case around the power supply board. But I was careful to keep the associated plate tucked in safely so it didn't get damaged or loose to damage other parts.
3) This enables you to lift up the main body of the TV (LCD+frame+electronics) and leaves only the plastic front cover with power-on cable attached.
4) Now you need to take off the metal frame from the LCD panel so you can access the bonds. The trick here is that the screws for the frame are on the front side of the TV (while so far you've been working with the front side down). I carefully lifted the TV upright so I could access the front side and unscrew.
5) Once you unscrew the metal frame from the front, the frame easily comes off. You need to be very careful here as the LCD panel is only attached to the main body of the TV via the TAB bonds (exactly dozen in my case) on the upper side of the TV. There are some bonds on the left and right side, but those are more like wings, not really attached. So if you remove the frame and the TV is not standing upright (or lying back, with the panel side up), you risk tearing the TABs off. I would not recommend taking the frame off with the TV lying on the panel side down position (which is how you start taking it apart).
6) Once you take the metal frame off, you can access the bonds so you need to do some testing with the TV powered on in the "broken-apart" state. You need to get the plastic frame (that you took of earlier) close enough to the panel so you can hook the power-on cable back, plug in the speakers just in case, and turn on the TV. See if you can locate the broken TAB by touching them with some soft non-conductive material (remember, the TV is ON powered by high voltage and these can get VERY hot so use caution here !!!).
7) When you locate the broken TAB, apply some padding on it's position on the metal frame so when you put the frame back it presses against the bond and keeps it in place. I used my son's spongeball (hope he forgives me when he finds out .
8) Now put the metal frame back and retest to make sure it still works. You probably want to wait for some time before testing to allow the TV to cool down. Even with the original problem before the fix, once my TV warms up and the problem goes away, if I turn it off and back on quickly, the problem doesn't happen. It only happens once the TV cools down.
That's all the advice I could give. If you have questions, feel free to post here. I have more pictures to share if you need more details.
Also: if someone finds a proper fix (a way to replace or resolder the TABs) please post here.
Was this reply helpful? (1) (0)
Note: Due to the depth of this discussion thread, no additional replies can be accepted for this post. If you have comments to make, please reply to the original post at the beginning of this thread.