Getting at 50HDX82 Convergence ICs

2481 Views 6 Replies 3 Participants Last post by lcaillo, Aug 3, 2011

BrewCity

Discussion Starter · Jul 23, 2011 (Edited)

So I have my board out on the bench, but I can't get at the ICs because there are two other boards sticking up and blocking the way. Looking for advice on how to remove them.

So there's the layout from multiple angles. Board 2 is a bit loose, so I can wiggle it but not remove it. Board 1 is tight. As you may be able to see, I pried away the little blue and white clips, but they still don't move. Is it just a matter of pulling them hard enough, is there a trick to it, or am I going about this the wrong way?

Thanks for any help. This forum is great!

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lcaillo

· #2 · Jul 24, 2011

The shield is soldered in. De-solder it, release the clips, and the board comes out.

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BrewCity

Discussion Starter · #3 · Jul 24, 2011

Thanks for a quick and easy reply. Knowing that it was as simple as pulling them out, I got board 2 out right away. Turns out those white guide posts hold it in and need to be bent out slightly. We'll see about board 1 and the shield.

My brother knows a guy who does electronics for a living. If his rates are reasonable I may just kick it over to him for the soldering work. Otherwise, I'll give it a go myself and see what comes of it. I'll let you know how it works out.

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BrewCity

Discussion Starter · #4 · Aug 1, 2011

I got the shield and the board out. They must have poured the solder from a bucket, there was so much holding the shield on.

Since I was on a roll, I went ahead and desoldered the old ICs. When I got the new ICs yesterday, I couldn't hold off and tried my hand at installing them. It went pretty well. Once you get going the soldering isn't so bad at all. It helps that I have a magnifier-light that I bought for painting miniatures. It would have been very hard on my eyes without it.

That done, I put everything back together, put the board back in the TV and prepared to try it out. This included grabbing a beer with one hand and a fire extinguisher with the other. A little dramatic perhaps, but I figured I'd need one or both before I was done. I'm happy, and still a bit surprised, to report that everything worked and the problem seems to be fixed. We've gotten a solid day of service out of the TV and hope for a least a few more years.

Thanks again for the help. You provide an amazing service here. The fact is that this TV never would have been a candidate for professional repair and probably would have ended up on the scrap heap without the information available here and in Youtube how-to videos. Now my brother wants me to help him fix his TV, which has been sitting idle for a year or so.

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74f100

· #5 · Aug 1, 2011

Good job!!!! To be honest, I would rather have your set than any new one out now.

Jim

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BrewCity

Discussion Starter · #6 · Aug 3, 2011

Thanks. I was quite sad at the thought of having to replace it. The built-in sound is very nice and the weak, tinny speakers that come in the new LCD TVs would just add to the insult every time I turn it on.

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lcaillo

· #7 · Aug 3, 2011

BrewCity said:
Thanks. I was quite sad at the thought of having to replace it. The built-in sound is very nice and the weak, tinny speakers that come in the new LCD TVs would just add to the insult every time I turn it on.

We are happy to help. Please continue to share your experience with others. As you learn more about how to get the most out of your set, others can benefit from your journey. These old CRT based sets can be some work but the performance can be quite good when tweaked.

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