That link is pretty good--most of the chips use low value resistors like the ones in the photos--most in this set are 2.2 ohm--check like checking a fuse.
1.) Some notes for you:
a) go into the customer menu and see if convergence is skewed and will not adjust.
b) if you replace the chips look at all the blue resistors in the photo--info for this model indicated all are 2.2 that you need to worry about.
c) use liquid solder flux before you try to unsolder them and clean the board after with acetone or denatured alcohol--remove all the old white heat sink grease and clean also.
d) apply fresh compound before you install the new chips--you have some choices--the reason the chips fail is the grease dries out but if you want to upgrade a little--use STK-392-150 CHIPS--same part but longer lasting.
e)DO NOT REMOVE 20 PLUGS TO GET AT THEM--GET THE CHASSIS IN THE SERVICE POSITON--yes, you will have to remove a few plugs and let some wires out of places where they are bundled--keep it simple--
f) use a good soldering iron at least 40 watts and do not force or apply too much heat when you un-solder and then re-solder.
The reason you want to use the liquid flux along with a wick is this set uses lead free solder--does not like to be removed--apply it before you solder the new chips in.
If you miss any bad resistors you will have the same problem you have right now--in these sets when they open they usually look perfect.
I have fixed hundreds of sets with this kind of trouble--not hard and much cheaper than having a shop do it--there is good seller on Ebay I buy from--a pair of the 150 chips is about 12 dollars--6 month warranty.
If this info helped you rate this solution as I do this here for free.
If you have questions or need any help let me know--I am here to help people.