Question about Norcent Technologies LT-2725 27 in. LCD Television

2 Answers

Dead no power

I AM TV TECH AND AM
WORKING ON MODEL LT2722
IT HAS NO POWER
LED DONT LITE UP
I CHECK POWER BOARD , IT
LOOKS OK TO ME CAN YOU HELP

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Hi change ic surface mounted u405 on back of signal board

Posted on Dec 26, 2008

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

  • Contributor
  • 1 Answer

Thanks for the response on U405 on back of main board. I changed this to fix the issue as well. Even though the post is old it worked great.
More info on issue was TV was completely dead & wouldn't power on at all (even the standby LED wouldn't light up at all). I verified power supply board was good by measuring the power board & main board connection cable & was getting the right Volts DC needed on the cable pins into the main board.
I used part # MAX810LEUR+T as a compatible part (ordered from Digikey. It's a very small surface mount 3 pin component & was a bit of a pain to solder on.

Posted on Apr 22, 2013

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Model DP26649 No pic no sound no warning. Shut off last night and dead today. Will be 2 yrs old in August.


Now the tv it is completely dead no LED power light indication is on at all or the tv power LED light indication blinking too?Check the power source?Tries tv unplug,replug it back about an hour later for the tv do a resetting itself back to the factory setting,tv should be working again.If not the tv power supply board it is dead,that the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish power supply board for the replacement.

Jun 17, 2011 | Sanyo DP32746 32 in. LCD Television

1 Answer

Our sharp LC-37D6U does not turn on. The opc/dl light keeps flashing green X3 then every second or so. and the blue power button flashes also. What might we have to do to solve the problem? thank you


The main tv Tuner signal board it is dead or it have problems,but tv still usable.Tries push the remote power switch off/on again everytimes OPC/Power LEDS lights flashes.Have to do this maybe 3 or 4 times for the tv to have a lite up LCD screen panel backlight to make the tv Tuner signal board to work again,for the tv to work.If still have same problems after 3 or 4 times power switch pushes off/on still have OPC/Power LEDS lights flashes.Mean the main tv Tuner signal board it is dead and can not be trying to save it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv Tuner signal board for the replacement.This solution 100% will work,if ur tv main Tuner signal board still have life left in it.I do this every few days out of a week for my 46" Sharp Aquo LCD tv set,tv it work all the times.

Jun 12, 2011 | Sharp LC-37D6U 37 in. LCD Television

2 Answers

Tv light flashed and cut off . turned back on and green light turned red and blinked 6 times pause then 6 blinks etc... tv will not power on. checked lamp seems to be ok. checked power supply board and...


Hello,

Your power supply board is not yet dead, u know basic electronics' and soldering? You have to open the back cover of the television check for dry soldering on the printed circuit board , if found resolder but if not Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this will help in solving the problem...

Nov 29, 2010 | Flat Panel Televisions

1 Answer

No power, tried a new power cord, still no power


Ur tv have any power lite flashes on the front power LED lite on the screen pannel?Yes,than the power supply board have dead leakage parts capaacitors,they bulges up on it top or puff off on it tops.U know basic electronic,soldering equipments and know soldering?Replaced those dead leakages gas capacitors on the power supply board.Or tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Jul 03, 2010 | LG 50PG20 50 in. Plasma HDTV

2 Answers

Samsung LA40A550 no picture and sound


Power supply board is dead.That the board,the power a/c cord go into it.Replaced the power supply board will solved ur tv power lite LED light indicator blinking and ur tv power will be stable and work again.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Jun 04, 2010 | Samsung LA40A550 40 in. HD-Ready LCD TV

3 Answers

I HAVE A 37" LG TELEVISION AND THE SCREEN AND SOUND JUST WENT OUT THE POWER BUTTON IS ON BUT NOTHING. IS THIS WORTH FIXING OR SHOULD I JUST TRASH IT...THE NUMBER ON THE BACK IS 37LC2D... CAN ANY ONE HELP...


The power LED lite indicator is solid green,but no pic.?This tv is very fixable,take it to the shop,they will order a refurbish circuit board call a T-con board from some wesites source and repalaced it for u.This should cost u half the price of a new tv.If ur power LED lite indicator is blinking and no pic.,they will replaced defective leakages capacitors in the power supply board,or replaced the power board all together.

Apr 28, 2010 | LG 42LC2D 42 in. LCD HDTV

1 Answer

I have a sharp 37" lcd tv,model # lc37sb24u. no pix or sound, power lite comes on about 10 seconds then power and opc lites alternate on and off. thanks RON


This problems very common in Sharp LCD tvs.The Tuner signal board have problems,every times the power LED,OPC LED lites up,just push the power button on again,wait see if the LCD backlight lite up and works,not the Power lite and the OPC lite LEDS flashes again.You,just have to push the power button again,sometimes u have to push the power button at least 6 or 7 times to get the Power LED stable,and then LCD backlight,come on than the tv work.Not sure,but if the Power and OPC lites keep flashing,after u pushes the power button at lest 10 or 12 times,and the LCD backlight dosen't come on and the tv don't work.I think,it time to change the Tuner board is completely dead.I have a Sharp LCD tv, I do this everytimes pushing the power button at least 3 or 4 than the power LED stable,and the LCD backlight come on than the tv work.Not a plaw in the power supply like those capacitors in many LCD models tvs,but some included Sharp Tvs is the Tuner signal board is not very good in design,use the tv awhile the Tuner signal board have problems recieving the power to it Tuner board components.

Apr 15, 2010 | Sharp LC37SB24U 37 in. LCD TV

2 Answers

42PFL5432D/37 WONT COME ON DEAD/NO POWER LED DISPLAY/2 YEARS OLD


An issue i came across with this particular model tv was there were two (2) 3300 micro-farad 25v caps on the power board that have gone bad, preventing the tv from starting up. I replace those two capacitors and it started right up! I suggest having a tech do it, unless u have experience with electronics. I cannot be held responsible for any damage done to your tv, warranties voided, or shocks you may receive. but that should get it to start back up.

Dec 17, 2009 | Philips 42PF9631D 42 in. Plasma Television

9 Answers

Vizi L37 - won't turn on


ok I'm just going to copy paste here being as this might work for you guys, I tried it my self but had no luck but my issue has slightly different behavior(led goes green for a second before dieing). any event here is what I found:

source

All,
Check this out:

kNOBLE
VIZIO
L32
LCD
DEAD WITH AN AMBER LIGHT
Do Not Order A New Board For This Vizio Model. You Can Fix This Problem For Pennys. Problem: Will Not Power Up Amber Led Only. Hint: No Reset To Operate Micro (Brain Dead) I'Ve Seen (3) Various Fixs Below, One Uses A Diode, Other Uses A 10k Resistor, Try Either. All 3 Will Work, Diode Works Best For Me This Same Reset Ic Goes Bad On Other Visio Lcd & Plasma Tv'S. #1) You Remove Smd U26 On The Video Processing Board And (Add) Put A 10k Resistor Across Pins 2&3. U26 Is Near The The Tact Switch. #2) Remove U26 And Solder A 10k Tru 100k Resistor Across Pin 2&3. Start With A 10 K First. #3) Remove Reset Ic Near Tac Switch Replace With 1n4148 Diode (Nte519). Vizio Tech Support: (Valid - I Tried It) 1-888-849-4623 Opt 4 Technical Support: 888-849-4623 Try Extension 1669 (David). Hugo Carrera Parts Department 877-668-8462 Ext 1814 Vizio Inc. 320a Kalmus Drive Costa Mesa, Ca 92626 E-Mail:Hugo.Carrera@Vinc.Com

60b6a37.jpg

Aug 13, 2007 | Vizio L37 Television

Not finding what you are looking for?
Norcent Technologies LT-2725 27 in. LCD Television Logo

Related Topics:

296 people viewed this question

Ask a Question

Usually answered in minutes!

Top Norcent Technologies Flat Panel Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Jose Velazquez
Jose Velazquez

Level 2 Expert

227 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Are you a Norcent Technologies Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...