Question about Samsung LN40B530 40 in. LCD HDTV

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My samsung LN40B530 control issues, switches back and forth from source to source no volume then weak or no signal, mother board issues?

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Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go. http://electronicshelponline.blogspot.com/
Try a reset too. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Service mode entry, adjust and exit procedure to many popular brand TVs are given.

Posted on Nov 21, 2016

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  • Samsung Master
  • 469 Answers

Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect.If you want to get one,please refer to: AmanStino Ultra Slim Lightweight Smart shell Stand Cover with Auto Wake...

Posted on Nov 21, 2016

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1 Answer

Source keeps changing


sounds like you have a bad function board

Jan 13, 2014 | Samsung LN40B530 40 in. LCD HDTV

1 Answer

The tv changes it source from cable to pc all on its own with no use of remote and the volume will not work


first disconnect the remote battery, if same problem then you have to take off the buttons on the tv and clean them from inside !


TV Repair Service Television Repair Tv Repair Toronto Mississauga...

Jan 13, 2014 | Samsung LN40B530 40 in. LCD HDTV

1 Answer

Input sources change by itself


All sets with exterior controls, volume, on/off you name it behind each plastic button is a tiny switch---a push switch that when released stops.

Bad ones develop not from age but poor quality,,,,that is a momentary switch, as long as held it should function and when released stop.

Be thankful it is not the sound UP as I have seen that, Menu, you name it.

Now to the proof and the solution, Someone has to gain access to that switch under that plastic button and remove it from the small circuit board it is soldered into---2 to four solder connections and remove the switch.

A ten year old with a soldering iron can do it.


With it removed power set back and see, if problem gone you have a few choices (really no choice if it was me) order and replace the entire board with all the buttons affected or DO NOT PUT THE BAD SWITCH BACK AND just use the set with the remote.

For the technical minded first the reason a remote will not stop this is buttons on the set have priority over the remote functions and YES you can test the bad switch and find it that way---I have seen ones not being pressed that read as low as 3 thousand ohms or less and that is bad=====there should be no reading across the two pins that are for that switch itself.

Let me know if you have questions, PS none of them sell the individual parts you have to buy the same poor quality board with another set of switches on it.

Dec 14, 2012 | Samsung LN40B530 40 in. LCD HDTV

1 Answer

Samsung LN40B530 volume goes up and down on its own from 0 to full


Try unplugging the controls from the main board. If it stops misbehaving, there is contamination on the faulty panel.

Aug 12, 2017 | Samsung LN40B530 40 in. LCD HDTV

2 Answers

When someone calls or I call them we can not hear each other


Use a handfree headphone set to confirm the status of the earpiece and the mic. If this works then there is fault or dirt accumulating in the small holes of the earpiece and mic. clean and try.
If there is no result with the handsfree then the mother board has some hardware issues.
Take consensus with the service center.

Aug 03, 2011 | Samsung Cell Phones

1 Answer

It seems to forget its freeview channels and starts to run through every channel, interupting tv service provide by scart connection to talktalk box. First sympton is the sound volume icon appears on...


Tries tv and the box unplug,replug it back like about an hour later.For the tv to do a resetting itself back to the factory setting.The box to upgraded it softwares.Tv should be working again.If still have the same problems.Take ur tv backcover aparts and disconnection of the tv side manual control board PCB wire connection plug in that have like Power,Channel - +,Volme - + and Menu so on buttons switches.Turn the tv on and see if tv funtions correctly If yes than the tv manual cotrol buttons PCB board have to be change.If the manual contol board is diconnected from the tv Tuner signal board and have the same problems.Than ur tv have a bigger problems,the tv Tuner signal board is the causes and the problems.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish manual control PCB board or the tv Tuner signal boards for the replacement.

Apr 07, 2011 | Samsung B2230HD LCD TV

3 Answers

Samsung LCD TV ''Weak or No Signal''


try swicth cable box for testing....if sam problem..need replaced tv main board

Jan 01, 2010 | Samsung LN32A330 32 in. LCD TV

2 Answers

Samsung LN40B530 40" 1080p LCD HDTV Picture rotated


how to rotate my samsung flat screen monitor turning up side down

Sep 08, 2009 | Samsung LN40B530 40 in. LCD HDTV

1 Answer

Tv not turning on and clicking non-stop


HI, this is a typical power board issue. have it replaced asap, if possible. a weak or damaged power sector will usually click upon the attempt to distribute power. replacing the power board will fix this issue.

Jul 25, 2009 | Samsung LN40B530 40 in. LCD HDTV

3 Answers

LG TV 32LB9D VOLUME STUCK AT 100, NO RESPONSE TO REMOTES


The fault may be on the control board. Sometimes the button switches can be stuck, or there may be something causing some conduction on the control circuit board. It is also possible to have a component failure that is causing a continuous command to keep the volume to the high position.

Something that causes failures of controls in TV sets is when people clean the screen, they spray liquid cleaner on the screen. Some of it drips down in to the controls and on to the circuit board. This will usually cause damage, and thus the set will require shop service.

Jerry G.


Apr 10, 2009 | LG 32LB9D TV

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