Question about Samsung LE40R74BDX 40 in. LCD Television

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Got a samsung le40r74bd,when i switch on it takes five to ten mins and there is a continual ticking .could this be the power supply board takes 10mins to 30mins to switch on and also a ticking noise

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Posted on Jan 02, 2017

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SOURCE: samsung le40r74bd LCD TV

hi is the power still coming on? if yes no need for power . have u put anntenal & change the chanels b4 then to see if sound will come .if ye s its yuor backlight inverter u can also disconet ur inverter plug & power on  the tv & change channels if works change ur inverter if dead change your ad or mainboard .
for replacement , lcd parts .com. will help

Posted on Nov 10, 2008

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  • 41 Answers

SOURCE: sound problems

Sounds like there is a bad solder connection inside the set and needs to be looked at by a tech. The Flashing LED usually will be a code for the tech to send him in the right direction as to the problem. Try counting how many times it flashes and call them or manurfacture. hope this helps

Posted on Apr 01, 2009

  • 187 Answers

SOURCE: sound but no picture samsung le40r74bd

Your mainboard is damaged, replace it and that will solve your issue.

Posted on Jun 06, 2009

Cool_dud 09
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SOURCE: power supply board

Hai,
Please check on here....you will find it out!

Posted on Aug 23, 2009

  • 1 Answer

SOURCE: Samsung power supply & IP board BN44-00264B &

For anyone else with this problem...I ended up getting a replacement transformer from ebay and swapping it out myself.

You have to remove the back panel of the TV, unplug the board from the harness going to it, unscrew the board (both via the set of screws going directly through the board and the set going through the plastic piece on the opposite side that, as far as I could tell, the board is glued to). This plastic piece (running the length of the board) has receptacles for the backlight bulbs, so be gentle getting it in and out. Don't forget the screw in the middle of the board.

De-soldering was a little tricky. My soldering skills are not great, so maybe it was me. But it certainly seemed to be a little challenging to get it all out. Having so many terminals probably didn't help (a capacitor would have been easier). Eventually though, I did get it out. Soldering in a new one was easy. Be sure to check continuity between the terminals of the new part and other parts of the board using the traces as a guide once you're done.

After that, simply re-install the board and put all hardware back in. Like I said before, be sure you re-engage the receptacles of all the backlight bulbs by pushing down at each notch on that plastic part of the board.

Hope this helps someone else...

Posted on Dec 19, 2011

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My samsung tv model number ln40a55op3f 8. havin troubles getting it to turn on...it wont turn on for like five min, then it will just keep turnin itself on and off until we unplug it...you never see...


The tv have a dying power supply board,that the board where the tv power a/c cord plug into it.U have all the tools and the understanding of basic electronic and also can do basic soldering works too?Yes,take all the Philip screws out of the tv backcover,take the tv aparts and now check the tv power supply board carefully for dying and soon to be dead components parts that are call capacitors.These dying and soon to be dead components capacitors parts are alway bulges up or puffing up onto it tops.These capacitors components parts are dying and soon to be dead must be all to be replaced.After u replacing all the defective capacitors components parts.Now the tv power supply board will be fixed and working correctly again and the tv will not have anymore power delaying like about 5 mins. or flashing LED power light indication,require unplug,replug again awhile before it will turn on.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

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This does not seem to be a power supply issue but rather an issue with the backlight inverter board. When the screen goes black, take a flash light and focus it on the screen from a close distance and several angles. See if you notice a very faint image. Try changing the channels to make it more noticeable. Try it and let me know

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If it just make tick sounds, but does not power up and does not do its normal startup, it probally the power supply board on this printer has failed. This printer like most modern electrical appliances has a switching power supply. The ticking sound is the power supply trying to start, but it senses a fault and shuts down and tries to restart.

I had a similar problem with my printer, though it not the same model (CLX-3160) but the same manufacturer Samsung. I took mine appart and found that one of the capacitors on the power supply had failed. It was blown and the top of the capacitor popped open. I am not saying this is your problem but it would be the first thing I would check if you want to get this fixed. Otherwise, look for a new printer.

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1 Answer

When i turn the power on the tv clicks for up to ten min before the picture comes on. is this fixable?


Yes,very fixables.Ur tv power suppply board have these parts call capacitors.They are dead and gases leakages,not total,but dying.These capacitors they alway bulges up on it top,puff up on it top,these capacitors are dying,that why tv still have power but it take up to ten min. clicking to recieve power to the rest of the tv.The power supply board,that the board where the power a/c cord plug into it.U have basic understanding of electronic's?U have tools,soldering iron,desoldering pump,solders?Take the tv aparts.U just looking,searches all around the power supply board and replaced these dead,dying capacitors that are bulges,puff up on it tops.Replaced these gases leakages capacitors,ur tv will have it power back to normal and work on the first click.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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Having the same problem. Took it to a repair shop and they say it is some capacitors and the power supply... Which seems kinda hinky to me... I would think one or the other would be the problem, not both at the same time.

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hi is the power still coming on? if yes no need for power . have u put anntenal & change the chanels b4 then to see if sound will come .if ye s its yuor backlight inverter u can also disconet ur inverter plug & power on  the tv & change channels if works change ur inverter if dead change your ad or mainboard .
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