MOST COMMON REPAIR FOR LCD - NO POWER

[@jasonthejawman5442]

Really enjoy your videos on how to solder and test circuit boards and this video was very helpful and I'm learning thank you

[@hawaii6282]

Thanks Tampatec we learn something new just about every week...

[@jusfucksingmeupG]

I really like your videos good stuff, that solder sucker you use is pretty good compare to other I used expensive or cheap. Its a must have for doing this type of work. I also have a hakko 808 monster solder sucker, but I only use it when I have a lot of tiny leded unsoldering to do. Well keep up the good work always enjoying your video God bless.

[@Landotter1]

Just an observation / constructive criticism..... You should have a damp sponge to wipe your soldering tip on. It cleans it and gives a much better joint. Heat transfer is the name of the game so when you said that you heated the lead more than the pad. That is the wrong method. Always heat both at once with emphasis on the pad. Like you said, minimum time heating the pad but both should be heated at the same time and solder will flow much better. Better over all heat transfer. If you have good heat transfer, the solder will flow more readily and the time spent heating will be far less than what you described. The capacitors are blowing because of heat build up and just being a cheap part. For those power units, the problem is that they over crowd the parts so you couldn't get a higher voltage cap and still have enough space. In the future where you have the space and what-not, always try to double-up on the operating voltage. I would try to see if I could use a 25 volt cap in the place as those were. Those capacitors do not "kick off" or start the supply. They are filter capacitors and filter any ripple in the output voltage. Some call it smoothing the output voltage. Some call them smoothing caps. Generally, in the US, we call them filter caps. If they aren't doing their job properly, the voltage may be a bit higher or lower than expected and the supply will sense a fault and shut down. The only things you could to to prevent the same fault in the future is 1: use better quality parts or 2: use a cooling fan to keep them cooler. Using used parts is bad practice. Resistors are one thing but caps are another and should be new and unused. What happens is the electrolyte inside the cap heats up causing pressure. When the pressure becomes too high, they vent, usually through the top. Caps, since the early 1980's have had the scored top and vent through that area. Before, they just blew the rubber plug out the bottom or completely blew the aluminum can off of the rubber plug, while shredding the plates within, causing further damage or a huge mess that must be completely cleaned or the electrolyte would splatter everywhere and corrode whatever it touched. All-in, this video was very well presented. Great job!

[@Ogre2011]

can you do a video on the basic anatomy of a flat screen tv, its component parts what each of them does and how it works together...thx

[@BluCasper]

this is awesome. thank you for posting

[@jerryman4146]

Great video, you explain it all so well...

[@francisanchez59]

cheers with cerveza presidente. Good tutorial.

[@doors1fan]

I have a new Vizio LED Flat Panel TV that had the power cord cut while it was still plugged into power. The cable was repaired but there is no power to the TV. Do these TV's have fuse protection inside? When the cut happened it was enough to cause my breaker to trip for the outlet that it was plugged into.

[@MountainCruzer]

This may be a dumb question, but I was wondering when soldering in a capacitor, heat sink, etc. on a circuit board as you did in this video. Does it matter what type of solder you use? Such as solid core, resin core, acid core?

[@angelarambula5501]

Radio shack the yee . Careful application, and all right. The video the PS4.

[@AlanLiefting]

You should measure the ESR of the capacitors. It should be low as possible for a SMPS. Given that new capacitors are cheap and that they degrade over time (ESR) you should not use second hand ones. Also, resistors do not go short, and to describe a capacitor as a voltage filter is incorrect.

[@wolfkatt]

Then again you're telling this to someone who puts text in the video and hides it behind the subscribe banner - and then blocks the ability to close it. He's trying though.

[@ventureelect]

wolfkatt Rosin core with the solder to use in electronics. With the small traces, use thinner rosin core.

[@Landotter1]

You are absolutely incorrect. Those capacitors ARE the filter caps, which filter the output voltage ripple, or ripple voltage, as some call it. The proper term is "filter capacitor"

[@user-gu8pg7hc8b]

Landotter1

[@09151981chris3114]

i love to learn thanks for your vids and the nfo i will stay here and learn the basc ples keep them coming bro

[@glomo4796]

chris ard. hi my name is Glo I have a TV the number is uh43mxa jy79@62691 please reply can't get the sound to come out

[@glomo4796]

chris ard

[@michaeldonaldson1959]

I have a question, my LG have standby light,turns to green when press power but doesn't comes on,was working perfectly until I changed the speakers that wasn't working, put it back together, and that's the problem I ended up with.

[@nighthawk0cool]

Hello long story short I got a really good deal on a Philips 3000 series LCD TV 50PFL3707 50" was told the power supply needed replaced i have check no signs of any leaks, bulging, burns or blown fuse. When I plug the power cord into the TV I can hear something getting power but nothing happens when I press the remote power or power on TV no red light comes on nothing....my question is I guess what am I missing...should I buy a new board an see if that fixes it or look at the main board ?

[@smng2193]

Hi Mr. Tampatec My TV LCD Brand Tosihba, model: 32AV700E has no power and no light coming on. Found there was burn mark on a resistor of power supply board. When replace the incoming fuse, fuse immediately blown. Please advise how to rectify the problem encountered. Thanks SM

[@michaelmonnin4836]

I have a Sylvania LC220 SLI that will not power up. The lights on the front will not light up. The fuse inside the TV test fine. I checked the power supply section on the board for bad solder joints. Still no luck. Capicators look good. What area should i check next? Thanks

[@rachelizaXLII]

Hi! I was listening to music through my Samsung Smart TV LN528550K1F (maybe a little loud?) and heard a loud POP and the tv turning off. I get no standby light now and it, obviously, won't turn on either. It seems like it would be a capacitor and I would have bet money I would have found one when I took the back off my tv...but they all look normal. In fact, nothing looks abnormal - burnt, bulging, disconnected - anything. Can a capacitor have "blown" and made that noise and still look normal?

[@asofx2]

Hello I have the Benq XL2730Z. Once I moved my desk to clean the dust and heard an electrical noise. When touching things the screen such as the cables I hear the noise. Sometimes it does not start, and sometimes I see the orange blinking. If I move the cable around for a bit left and right I can start it and it works. Do you think it could be the power cable?

[@andrewchan5291]

@Tampatec How did you identify that the problem with the power supply was the two blown capacitors? Do they look visibly blown?

[@coltpetitt6807]

I have a lg 60 plasma pn6500 tv that experienced a lightning strike I took off back to tv and no burns are visible. there is a constant red standby light on front of TV that stays on and also a red I got that is on main video board I changed out main power board and still get the same problem. what should I do next?

[@pabloavila2745]

hello, I have a 50 lg tv than I just replaced the power supply and it works, but the screen got some lines across the screen what could be the problem now?

[@BestRareR]

My monitor has the orange light on the power button but pushing the button doesn't turn on the monitor what could be the issue

[@larrycox2262]

can you get the CCFL's to turn on by jumpping on/off and 5v ?I am working on a Vizio VA370M..I jumpped 5v and pson and I have 12 and 24 volts.I don't know if I ground on/off or jump with 5vdc.

[@H.W.H.alshammari]

enjoy ur video.Thanx

[@cheeru27]

I have a AQUOS Sharp LCSD Mod. #LC-46D64U. The sound works but the monitor has red, white and blue lines ( some are straight and some are like a strike of lighting across the screen. What should I look for?

[@09151981chris3114]

good vid brain you are the best

[@RogueSquidward]

I have an ASUS VG248 monitor and recently had a power outage. The monitor was plugged into a surge protector but it didn't help it. The power light flashes a light faint blue constantly and does not power on. The capacitors are all good. Any idea what could be causing it to do that?

[@markkerce9964]

Great Video!

[@robbiegoudeau8440]

I have a Sony Wega TV whereby at first TV would be on for 5 minutes then cut off for 4 minutes; started this morning, on & off. I cut TV off now won't power up nor show the red light indicator. This is a Sony Wega LCD Color TV. Help.

[@alexdavinci9533]

After watching your vids, I decided to fix my TV on my own. The problem with my TV were four blown capacitors! Now fixed my TV seems to overheat. Is this normal, or might there be another problem with my TV? My TV is a 2008 Samsung, model LN32A550P3FXZA

[@abdulmukmin7605]

I have a LCD computer monitor BENQ W 1507. Actually when I tried to turn on the monitor, it's took a long time to make it power on. So how ?

[@bucks6144]

Hi.. my Devant LCD tv won't turn on but the standby power is lit. Does this mean my video board was damaged? Thanks.

[@paringatai]

nice video tho...thanks

[@shashikumar-wk1wu]

i have led 42 inch haier tv,in my tv power is coming and my remote is broken.when i am switching on my tv manually,green light is coming for 5 second but i can't switch on my tv. please give me the solution

[@grady.roachjr6249]

need a video that shows my make " Magnovox 2006, model # 50MF231D/37. 55"in . power on.... shuts down.... really need help getting fixd ?

[@BeryBelloney]

I have the same condition but the thing is... is it okay just to swap up the power suplly ? coz the connector is different . 1st monitor: has power lights on but no display 2nd monitor has none turned on is it worth the shot ?

[@angelarambula5501]

The power board you know your thing about electronic s . What would be your address (FANTASY).Thank you

[@radmansa5514]

Good video, got here my mistake! But subbed 👍😎👌

[@deepblue0025]

Hi Dude, any idea where to find part number for Toshiba tv, power board: V71A00029000/L135A002L-T001 rev 01? the PWM chip is physically broken, can't see part number.

[@michikenkoy]

Hi.... I would like to know why resistor burn... Please help

[@drickko12]

Hello I have a sony tv model KDL-22PX300. When I plug, the red control light illuminates and blinking when trying to turn it on by pressing the power button on the remote controle , LED s lighter green but not tv not power on after release it the button the led start blinking again... Please help. Best kinds.

[@Landotter1]

There are capacitors that go bad on the power supply board and need to be changed.... There are specific youtube videos about this so look them up. most I have seen are very well done. Only use new parts and try to get better quality than what came in it originally. Japan is normally good about using quality components so I'm surprized to hear this.

[@robgrant3831]

I have a 6-year-old Sharp TV (model#LC-C4654U) that is exhibiting power supply problems. Is it worth having repaired (not inclined to fix t myself) or should I replace it? Thanks.

[@glomo4796]

Rob Grant.

[@glomo4796]

please help me hey get sound out of my TV it's at Emerson's

[@glomo4796]

my name is Glo

[@hamideddaifi5615]

thanks,very easy

[@eduardoquintero7205]

I have a dynex tv it turns off automatically 45 minutes then I have to reset it by unplugging it from wall has a standby light on the front ....

[@Naton]

i checked all the capacitor and they're not blown, no black burn marks behind. still cant find the problem. one day the monitor just turned off and wont even power on.

[@tbsDesign]

"Tampatec" question! My LCD has no power and no light coming on. Don't think it was the capacitor because I change the power supply bored and still nothing. Please help! Thank u

[@TampaTec]

check for 5v or 3.3v standby dc volts on powersupply plug to main board, if no volts then can be power board but if you got dc volts then its most likely bad main/video board, get tv boards at shopjimmy.com

[@frealandjohnson6278]

Frealand JOHNSON enjoy all your video,i have a sony kdl55xbr8.every 8-to 10 days I have vertical lines across the whole screen ?.

[@russhill6894]

I got me no power to my Toshiba Regza, model # 42RV53OU. Checked the glass fueses, all good. What do I check next?

[@alstevens44]

I have the same TV model #, my #R850 resistor bad so I change it & it's blows again, then I check the power IC & bridge rectifier with the power cord connected to ac but the TV is off & no voltages, no 5 v either

[@glomo4796]

alsteven44 how can I fix the speakers Emerson TV is Intuit

[@marcoemmieaceves]

I have a Dell E156FPf and it won't turn on I plug it in the green light comes on and goes out quick. Changed the power cord and nothing any ideas?

[@Arisat0]

Hey same thing is happening to me, did you fix it?

[@Sanyey]

ok.. and what If my monitor powers on randomly, but ONLY by plugging it in and out of the wall... so there's obviously no standby voltage.. there are 3 lines coming from my psb.. a 12V , a 5V and a 3.3V.. if I plug it in -and it isnt turning on- 3volts appear on the line for a sec then falls down to 1-2.5V , and if I press the power on button in that instance, the power led lights up for a sec.. If I measure my 3V line after a failed plugin, it measures from 1 to 2,5Volt totally caoticly jumping between.. If it does turn on by plugging it in in a lucky way, it has steady voltage on all 3 lines.. so wtf :D btw replaced all the psb capacitors as a first try.. now im totally clueless.. (btw im a car mechanic :D ) nothing physicly wrong with any boards.. this not willing to turn on thing developed through a few years of time

[@robincook4123]

hi my name is Robin cook I have a42inchflat screen inch sanyo HDTV model no.FVD4064 serial no.L3480007414040 my antenna cable in piece is broken off the tv how much is that gonna run me to be soldered back on the tv comes on n that's it I get a blue screen

[@TampaTec]

watch my last upload it's shows you how to solder that connector.

[@1959Berre]

A used capacitor should be tested for ESR, besides capacitance; even when it looks good it may be bad under load. I never reuse old parts.

[@SilverMoonJoe]

1959Berre thats a matter of preference... i had used old parts from old tv's that i have collected over the years and have work fine! And yes, it could be bad under load. I am sure Tampatech is well aware of that...good point thou...

[@lwilliams1974]

I have a Vizio XVT323SV LED LCD TV that flashes the power logo for 1min and 25sec the power on with the logo on the screen for 1min and 40sec then power off. After 10sec the loop begins again, and again, and again. Looking at the boards I don't see anything obvious. Where should I focus? Thank you in advance.

[@TampaTec]

First unplug tv powercord and cables for 2 minutes to reset, next Check standby volts ok then can be bad main logic board ICs or caps. Get at shopjimmy.com or ebay for main board, let me know if that fixed it. Part number is on sticker.

[@lwilliams1974]

Will do. I'll have to watch your videos to make sure my tests are done correctly. Can Caps be tested using a multimeter?

[@TampaTec]

Shopjimmy has eeprom that can fix tv.

[@lwilliams1974]

While testing the power board I found the pins on CN201 for 5.1V read 5.2V. The pins on CN202 for 5.1V read 5.2V and the pins for 12V read 0.0V. I figure purchasing a new board or boards should complete the repair, but I really want to test components and maybe replace what's bad. That would really be satisfying to me. I really appreciate your help and guidance.

[@lwilliams1974]

Just to update my status. I was incorrect with 0V on CN202. 12V are good on power board. Shopjimmy didn't have the repair kit for my board so I ordered the main PC board. I'll keep you posted as I would like to learn to repair my defective board, with your assistance of course. Thanks!

[@pinkelefant4ever]

no lights standby or power. Unplugged and disconnected all cables. Hibashi, model number not available til morning not my TV but since it's my landlord's they are telling me they want to get more rent and to put my stuff in my truck and haul myself away.

[@brig.4398]

I've had those caps blow up in my face...so always wear glasses. I usually just buy a cheap pair of magnifying glasses at the drug store and wear them when working on sets.

[@EarendilTheBlessed]

+Bri G. They blew up when unloaded for no reason?

[@brig.4398]

sometimes they just go bad and blow up

[@EarendilTheBlessed]

Bri G. Under load or not?

[@brig.4398]

well the tv was on at the time..is that what you mean?

[@EarendilTheBlessed]

Bri G. You were working on a plugged tv? Or why else were the capacitors in front of you..

[@ngwetekino9604]

How to fix my lcd Sceptre ,65 in model 50326502000060 power supply,

[@michaelcummings2050]

i am in tampa... what is the name of your business? my vizio will not turn on

[@kobesijo2937]

hi wow

[@jesseempleo7201]

How about replce 2,000 uf no problem

[@RGTelesound]

Is anyone else, that solders for a living, cringing watching this?

[@ronisuni73]

Z

[@Gio-vf1zf]

LOL If I do that it still would prob not work. Looks like surgery