Hello!
Here you can find manuals for a number of Samsung LED TVs. Hope you can find here a manual for your device (or a similar device) and solve the problem.
https://manualsbrain.com/en/brands/samsung/led-tvs
SOURCE: when the tv has been on awhile
Do the smudges move around or are they in the same position all the time??If they appear in the same position it sounds like you are having a problem with the invertor panel or the back light circuitry.If you could post photo of fault would be helpfull
SOURCE: "clouds" on 32" Samsung tv screen
My best suggestion is to replace the inverter to the lcd panel.I could look up the part number if you need.Let me know - edcarson
SOURCE: projection tv philips model number 60pp9202/17f
that sounds like the classic symptom of the convrgence Ics needing to be replaced they are STK392-120 you can get both replacement ICs at the following link with free instalation instructions. here is the link.
http://servicemanuals.vstore.ca/
SOURCE: jvc 65 inch I'art tv
1024x768
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When A REAR PROJECTION TV has coloured outlines or a 3D
image the Convergence Circuits most likely need attention.
Replacing the output amplifiers (located within the Convergence
IC's) allows the pictures to line up correctly, and no more color
outlines.
This is the most common fault in all makes of rear projection TVs.
Some models of TV require major disassembly and considerable
shop/manufacturer's support to repair because of their design that causes other
power supply or vertical deflection problems. The poorly designed products
require a "bench" repair that can typically cost from $350 t0 $700.
Some TVs are designed for on-site repair and have more reliable circuit design
that does not usually cause damage to other parts of the TV when convergence
chips fail. The ones that usually allow reliable on-site repair are JVC,
Samsung and Hitachi.
It is normal to have some resistors in the circuit burn up or increase in value
from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced
with the right value or the chip may fail again.
This is not a simple repair like changing batteries or a fuse. Reading
through the other posts shows many that try and end up with bigger problems.
Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with
other "new and improved" IC's, like STK 392-150. These are
devices with different characteristics and require different value resistors in
the circuit. Replacing with the STK
392-150 will cause overheating of the resistors and a damaged IC.
If you are in Calgary, I can help. If not, get someone that has experience
working on your JVC. My website is below with some costs and explanation.
calgaryconvergencerepair.weebly.com/convergence-explanation.html
Good Luck,
Easyab
SOURCE: shadows on screen
Try moving a medium powered magnet (not one for picking up heavy objects and not a refrigerator holding one) over the distorted area. If that doesn't work, try a more powerful one. This worked for my Toshiba LCD. Good luck!
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