Originally Posted by louiselulu
I didn't count the number of the srews I removed, but I remembered that I removed all the srews with an arrow sign beside the srews all along the four sides of the tv. There are at least two that tighten the rear cover to the outlet panel at back. All the srews I removed are the same type. You can check page 11 of the Service Manual as a reference (The picture is for a different tv model).
It seems to me that the tv is easy to be moved with rear cover on (300 lb according to the user manual). My tv sits on an original matching stand. I turned it face down with the help of my two friends, and put it onto four plastic stepstools on each corner of the tv. This way, you can check if the tv is on without turn it back up after you replace the ICs. However, the best way I think is to just move you tv forward so that you have enough room to work at the back. The chasis assembly can be pulled out and turned up to the service position (see the instruction on page 11 of the Service Manual). Be sure all the wires are loosened (not unplugged) so you don't break or disconnect any of them accidently when you pull the chasis out.
The two ICs are located at the left up corner. Take a lot of pictures from different angles around the chasis before you work on it so that you can compare them if there is anything wrong. Good luck for your repair.
BTY, I didn't have any previous experience on soldering. So I practiced a little bit on a old telephone board before I worked on the D board. It really helped.
Thanks very much for your advise and help, finally I was able to completely remove the cover there was a total of 23 screws in case anyone else was curious. As you advised I looked at page 11 of the service manual and was able to locate the 2 latches that hold the D board, I released them both and was able to pull the board out but not completely as the wire harness that connects the board to the tube is quite extensive. I am actually attempting to complete this soldering and extracting process of the chips from behind the TV since I am not able to lift the TV off the stand and tilt it forward as the weight of the TV is a bit intimidating.
So I am exploring the possibilities of disconnecting the various wires so as to make it easier to pull out the D board and eventually turn it upright into the service position, however there is 1 large Red wire that connects the picture tube to the D board that appears to be a problem, the others are just connected to pins that can easily be taken out, so I am planning to remove the wires that are accessible and hopefully I will have more space to rotate the D board into the service position .
I do have one additional question about the IC removal, how do you actually remove the chip using the Soldering Iron.
So far I purchased the following at Radio Shack
1.30Watt Soldering Gun
3.Vacuum Desoldering Bulb
3.60/40 Rosin Core Solder
On Ebay I purchased
(2) MCZ3001DB IC + SOCKET - MCZ3001D
If you could give me a step by step procedure for the removal and replacing of the IC, I would highly appreciate it as I have no experience using Desoldering Braid