Question about Samsung LE26R74BDX 26 in. HD-Ready LCD Television
Samsung had this investegated with Martin doors, who said it was the power supply. My question is:- 1) how much to repair this? 2) would this have court fire???
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Posted on Jan 02, 2017
Hi: We had this problem under warranty, and tech installed the following to solve it: Parts BN96-02033A, BN96-02034A and BN96-02216A. This solved the problem for 2 years. I now have the upper half going black now and then for 2 to 3 seconds. I am ordering these parts from www.partstore.com and will just plug them in. Better than a new tv.
Posted on Aug 16, 2008
SOURCE: Samsung LN-S4041DX 40 in LCD TV
Hi. You can try to go into service mode and reset the LCDTV to Factory Default. This will clear out all buffer over run's and any software related issues. It may fix the problem or it may not. If this doesnt fix the problem than you need to have a qualified Technician to look at it. The problem is in the AV circuit board, a technician who is qualified to repair electronics at circuit board level should be able to repair this problem rather quickly and inexpensively. Most technicians who do not have the expertise in repairing cicuit boards to component level would rather replace the whole AV board than repair it and this will be rather expensive.So talk to the repair shop before you drop the TV off.
Be very careful when accessing service mode. I suggest to write down all information in all areas before proceeding to a factory reset. If you do not record all values correclty you run the chance of not being able to use the TV again. To go into Factory Service mode, use the original remote and in this sequence push POWER OFF-MUTE-1-8-2-Power ON, the set will turn on and enter service mode, if you hit all previous keys correctly. If it doesnt try again. When you are done hit POWER OFF and this will exit service mode and save the data.
Posted on Jan 28, 2009
I found a fix for this problem on another forum, It's caused by some blown capacitors on the main power board. I have a link to the original post, with step by step pictures for replacing the blown capacitors but don't know if it's ok to post it here. The repair cost me £7.49 for 5 capacitors RS part number 526-1109 and about £4.50 of that was for next day postage. I did the job myself in about 15 minutes and I have no experience with a soldering iron (i even had to borrow one). I replaced 3 capacitors, 2 of which looked blown and one which just looked swollen.
Remove the back off your tv, and just take a look at the small array of capacitors near the top right corner of the centrally situated power board. there are 4 identical capacitors rated at 1000uf 10v 105 degrees C. I think the silver capacitor lids should be flat or even slightly concave. The ones I replaced were all slightly convex and 2 of them had a tiny amount of what looked like brown corrosion right in the centre of the caps.
For a few quid I'm sure you could get someone else to do the soldering if you lack confidence.
The original post also linked to a supplier of the main power board for £130. I didn't mind having a go myself because I figured if I fouled up I could always just buy the board.
Posted on Apr 15, 2009
Just to be a little more detailed, since I just fixed this problem. It is the capacitors are the problem. However, I think that if you have some minimal skills with soldering, you can fix this yourself. You just need to take out the system board, then the power supply parts are on the top right. The bad capacitor(s) will be bulging at the top and possibly have some brown stuff coming out. The ones that go bad are 1000microfarad, 10V, however you can replace them with higher voltage. I got 35V caps from radio shack for 1.59 each. You just need to solder out the bad ones and then put the new ones in and solder. Remember that the negative end goes on the side with the bold black part of the circle on the system board. Then just cut off the extra ends of the capacitors. If you are capable of doing this yourself, you will spend at most 6 dollars instead of however much a technician costs.
Posted on Sep 25, 2009
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