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Sears LXI Slimview 50" projection TV has horizontal distortion

My 10 year old Sears LXI Slimview has recently started displaying horizontal distortion in the image on both the cable coax input channels and the VCR/DVD input (Yellow/Red/Whiite cables). When accessing the menus, the distortion is not there. There is a slight "jump" up & down on the image (approx 2") every few seconds that you can see in the menus, but no side to side distortion like in the channels. On the cable channels and the VCR/DVD, the left edge of the picture is ragged (offset 2" in some places) and the crresponding lines are shifted all the way across the screen. I took the back off and tightened up the coax where it goes through the back. I checked the connections and fuses and could not see any visible damage or loose solder joints. I did not examine the lamp connections. I noticed all the little adjustment knobs for the lamps and some more that I don't recognize. (I fix computers for a living, not TVs!!) Any ideas on the trouble and the fix for this problem?
Sears Roebuck model 626.54638 392 Chassis PTV515-AH01. (I think this is a Philips/Magnavox chassis) I do not have a schematic. Thanks for any suggestions!

Angela

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: convergence picture adjustment?

I had the same problem where all of a sudden it started bowing on top and bottom and the colors were bad. I read on here and other sites about the 2 convergance chips so I figured why not try as the tv was going to get thrown away because I could not find anyone that would touch it. Well I ordered 2 stk392-120's (I know others are saying use the 150's or 180's but I just wanted to put the same ones that were in there) I ordered them from electronix.com for 9.99 each plus 6.60 for shipping they took 3 days to get here and I installed them tonight and it worked great. The whole thing took only about 2 hours from start to finish. Here's a couple of tips....the chips are on the far left when looking at the tv from the back, make sure you mark with a marker where the wires go that you have to unplug as there are about 10 of them, each chip has 19 pins that you will have to soder make sure you have a soder ****** to get all the old soder up as you are heating them up, after you are done puting it back together leave the back cover off and turn it on, then go into your menu and go to pictureand go to manual converge and go to undo multpoint and restore factory as this will reset it all. Then if your color is still a little off as mine was there are 6 knobs in the back of the tv by the chips you were working on, find a channel with a lot of colors and try adjusting the top 3 a little at a time till you get the right color that you like. This should do it. It took 26 bucks and 2 hours for me to fix a tv I was ready to replace, thank god for the internet to be able to look stuff like this up. Good luck!

Posted on May 09, 2008

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hakimmadina_
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SOURCE: My 60'' LXI slimview television will only save one chanel.

If you have remote control for the channels on your set, try to push menu then choose "memorize channel" or choose "cable" then do the channel memory.
Thanks.

Posted on Aug 16, 2009

techman007
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SOURCE: 55 inch mitsubishi rear projection tv red lamp out of adjustment

Have convergence IC's replaced. I believe this unit uses STK-392-570 convergence IC's Only one has gone bad but replace them both, because if one has failed then the other is not far behind, for Blue and Green. One handles Red, One handles BLUE and Grn. There are only two of them in the set, They are the two largest IC's in the entire set.

Posted on Oct 01, 2009

johnnydiode
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SOURCE: Replacement Lamps/Bulbs for Philips 50P8341 Rear Projection TV

These are both CRT type TV's(3 picture tubes drive the image) with different screen sizes and the CRT's are not interchangeable

Posted on Oct 24, 2009

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texasdan
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SOURCE: Mitsubishi WD-52525 DLP HDTV screen went bad

I repaired 3 sets and found many surface-mount caps were bad on four boards. After using an ESR meter and finding so many bad caps, I ended up replacing most of them (about 100). The parts were cheap, but it took me about 10-12 hours to repair. I've seen so-called capacitor repair kits on the web that only address the large caps on the power board. You can buy these individual caps at Mouser.com for under $10.00. Luckily people toss these sets so I have 3 awesome sets that only cost me labor and about $30.00. Sorry for the bad news about the caps.

Posted on Apr 21, 2010

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