Mulja tv repair portal

Equipment Repairs => LCD TV forum => Topic started by: kgreeny on May 11, 2007,20:08:19

Title: Scrambled picture
Post by: kgreeny on May 11, 2007,20:08:19

Acoustic Solutions LCD32NK750HD 32in after around 5 minutes the the picture suffers from horizontal lines, split screen sound is ok throughout.I have taken the back off and having only ever serviced crt tv's was rather surprised how little in there.However it seemed a multi connector from the main board to the screen board was causing the problem so made it secure and it worked for a week but the problem is now back again.Any help would be greatly appreciated.I know from experience about these unbranded/rebadged model I've got no chance of getting a service manual so hopefully someone has come across this type of fault before.Thanks all,great site too I have some manuals I will upload soon,they're a bit old but well someone might need them.

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Post by: mulja on May 12, 2007,04:04:05

This may be Vestel chassis. If so LDVS cable will have to be replaced. This is cable between main board and screen. If you send picture of insideof tv we will know. Also show picture of fault.

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Post by: kgreeny on May 12, 2007,06:12:30

Thanks for the swift reply Mulja really appreciate ant help you can give me.I haven't got the tv here but I will take some pictures of it and post here as soon as I can.Is what I describe a common fault on these models by any chance?

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Post by: kgreeny on May 19, 2007,19:05:31

Hello Mulja here are the pictures I said I'd get of the TV.The horizontal lines have now become vertical ones and it's displaying all kinds of picture faults now including colour faults.The picture of the connector I have taken is from behind the power supply board.Again the fault does seem to appear and disappear with the movement of the cable from main board to screen board.Hopefully you can advise me,so thanks Mulja it's much appreciated.
[link=../../e107_files/public/1179529531_1155_FT317_1.jpg][img:width=100&height=55]../../e107_files/public/1179529531_1155_FT317_1_.jpg[/img][/link]

[link=../../e107_files/public/1179529531_1155_FT317_2.jpg][img:width=100&height=55]../../e107_files/public/1179529531_1155_FT317_2_.jpg[/img][/link]

[link=../../e107_files/public/1179529531_1155_FT317_3.jpg][img:width=100&height=53]../../e107_files/public/1179529531_1155_FT317_3_.jpg[/img][/link]

[link=../../e107_files/public/1179529531_1155_FT317_4.jpg][img:width=100&height=70]../../e107_files/public/1179529531_1155_FT317_4_.jpg[/img][/link]

[link=../../e107_files/public/1179529531_1155_FT317_5.jpg][img:width=100&height=75]../../e107_files/public/1179529531_1155_FT317_5_.jpg[/img][/link]

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Post by: mulja on May 22, 2007,04:28:04

If you think this is not the cable then resolder IC224. We would still replace cable.

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Post by: kgreeny on May 22, 2007,06:19:01

Thanks Mulja I do think it's the cable,have you any idea where I can get one from? Also is it a vestel chassis?I can't find any markings on it to indicate the chassis.Thanks again.

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Post by: micky on August 18, 2007,11:28:18

Hi i got the same tv here doing what your tv is doing but its like this from start up.But i think its not the same problem because it looks like someone as try to fix it before and i think a few of the capacitors are the wrong value does anyone have a service manual for this tv or a close up picture of the main board ? could anyone please let me konw.
Thank you
Michael