Samsung plasma and LCDs capacitor faults

Surfer · 31 Aug 2010 at 16:52

Just wondered if anyone with a Samsung plama/lcd had an issue with their tv where it didnt switch on (you hear the clicking noise for it continually attempting to switch on). Apparently this is due to swollen capacitors or something?

Well anyway - if you did have this issue, how did you fix it? Ive seen some good youtube tutorials on how to fix this but not one for a samsung plasma Ps42Q97HD (my now "dead"-ish tv). Also read on another forum that it isnt too hard to fix. you just buy some new capacitors, unscrew the back of the tv. remove and replace with new capacitors? and thats it fixed.

Its either that or pay a heckuva lot of money for an approved local samsung shop to fix it. :/

masterluke · 31 Aug 2010 at 17:00

have you got experience with a soldering iron?

233 · 31 Aug 2010 at 17:01

piece of cake any half decent tv repair shop would do it for a few quid or diy if your competent with a soldering iron

Surfer · 31 Aug 2010 at 17:21

masterluke said:
have you got experience with a soldering iron?

i get all my info from youtube sooo uhh yeah?

Foxtrot26 said:
piece of cake any half decent tv repair shop would do it for a few quid or diy if your competent with a soldering iron

Good, good, next question is: i guess i just open up the back of the tv to check what actual capacitors my tv has?? I have no idea on the type or microfarauds
And then buy some replacements and then get mr repair man to fit em. (or do it myself)

btw this is the page where i found the info on this

http://www.earthinfo.org/samsung-tv-makes-a-strange-clicking-sound/

At the moment i am waiting on Samsung (in Egypt, Cairo) phoning me back because they initially refused to do a free repair because it was outside warranty and because my tv was not one of the ones on their list that qualifies for the free repair.

What kind of luck do i have..first ps3 breaks...i eventually get it sorted (new free ps3

) now the tv goes

Surfer · 2 Sep 2010 at 17:09

Well local samsung approved repair centre wants £200 to fix my tv. (take away and fix)

Samsung themselves have been beyond useless, lesson learned -wont buy another samsung product.

Plan of action is DIY. Open back - have a look see where capacitors are. Hope they have some kind of number on em - phone local electronics shop buy capacitors (with higher voltage so im told) - take old capacitors out (think i might need the soldering iron here?) replace with new capacitors - fit back of tv - job done?

anyway thats my weekend fun woo!

Mongy2130 · 2 Sep 2010 at 22:05

Happened to mine afew months ago local tv repair man fixed it in afew hours for 50 quid as I didnt want the trouble of doing it myself

insane200 · 2 Sep 2010 at 22:11

Surfer said:
Samsung themselves have been beyond useless, lesson learned -wont buy another samsung product.

normally samsung are pretty good, the last few times ive had to call though, was worthless, we have 2 3d blu ray players on demo which have gone fut now, one was straight out of the box, the overall quality is a joke tbh.

Dave85 · 2 Sep 2010 at 23:38

I really dont want to buy anything samsung again. Our Fridge has been broken 4 times flooding the kitchen twice. Both under warranty last 2 times where recalls due to fire hazzard fixed out of warranty for free.

Our 50" plasma has had whole new boards when in warranty and then was totally replaced as it died completely and guy could not fix it. Now its started again with the replacement now out of warranty where it will randomly black half the screen then sort itself.

feel for you as samsung repair prices are a joke

alex24 · 2 Sep 2010 at 23:45

Not just TVs affected by Samsungs cheap parts, their monitors have been too. There was a thread on here recently about the 226BW having cheap capacitors on the power board which caused issues for many.

Luckily got a TV repair guy over the road, he's retired but hopefully is still handy enough with a soldering iron if we need him!

To be fair, only the OSD has broken on my 226BW so far, but I don't run it on full brightness, whereas the people who do seem to have the issues. Whether that's true for the TVs or not I don't know. My parents have a 50" sammy plasma (have for quite a few years now) and apart from the odd burn in that happens now and again, it's still going strong. Speakers are just terrible though, but that's OT.

Virdi · 3 Sep 2010 at 21:33

The Capacitor (not switching on issue) is only common on LCD Samsung's not Plasma's.

Surfer · 4 Sep 2010 at 14:52

^^ i know. But i do know of other people with plasmas who have had the capacitor problem (noise clicking when try turn on tv)...samsung just haven't received enough feedback to make it official. They pretty much told me this on the phone.

Anyway...... back to my diy repair plan. Took off the back of tv to see whats what.

4 circuit boards. 3 have capacitors on them. Unfortunately to my untrained eye they look fine...so im a bit downhearted because it doesnt look like a simple replacement fix

I'm hoping at least one electronics wizard will be able to see if theres anything odd

- stand by for some BIG pics -

1.

1st board

closeup of this board

middle board

middleboard closeup

right board

right board closeup

that looks odd to me

Biohazard · 4 Sep 2010 at 15:09

pic number 3.

those caps have swelled

i'd personally be more inclined to try and get hold of replacement pcb's

Surfer · 4 Sep 2010 at 15:31

Biohazard said:
pic number 3.

those caps have swelled

i'd personally be more inclined to try and get hold of replacement pcb's

The group of green ones? You mean because of the slight swelling at the base? Its like that on virtually all the caps on all the boards - isnt that how they look?

You think i should buy new circuit boards??? :eek:

why??

Expensive

Flukester · 4 Sep 2010 at 15:33

I'm not so sure there is anything wrong with those.... And even if faulty a new pcb is way over the top

One thing, unless you know electronics and are experienced with a iron don't even attempt to repair anything. Reason is that unless experienced with pcb working you'll probably end up blobbing solder everywhere and ruining tracks etc

Flukester · 4 Sep 2010 at 15:35

As a note that whole bad caps thing that has plagued the industry was caused by someone stealing what he thought was a electrolyte formula.... This formula was incorrect and found its way to another Manu, who then churned out millions of bad electrolytic caps

Surfer · 4 Sep 2010 at 15:57

Flukester said:
I'm not so sure there is anything wrong with those.... And even if faulty a new pcb is way over the top

One thing, unless you know electronics and are experienced with a iron don't even attempt to repair anything. Reason is that unless experienced with pcb working you'll probably end up blobbing solder everywhere and ruining tracks etc

http://www.youtube.com/watch?v=Y7b_nTaZYcU

http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related

http://www.youtube.com/user/wizzywigterry#p/u/7/ecP_X6_-KGU

using these to help

Though if theres nothing wrong with the caps - i dont know what it could be. Tv was fine no problems at all until bam it would switch on for 5 seconds then switch itself off and now constant clicking if try to switch on. hrmm.

Biohazard · 4 Sep 2010 at 16:00

Surfer said:
The group of green ones? You mean because of the slight swelling at the base? Its like that on virtually all the caps on all the boards - isnt that how they look?

You think i should buy new circuit boards??? why?? Expensive

on the top, the top should be flat with the rest of the surface level with the x cross, and you've got a couple which have swollen up around above the level that cross on the surface top.

the base of them is fine, that is how caps look.

reason I say get replacement pcb is to save you hacking/burning at something that is quite expensive (the tv as a whole).

try to see if you can get second hand replacements if you dont feel confident, i'd maybe run the pcb's by a electronics shop to see what they think. problems can occur that are not always 'visable', while those caps aren't 'nuked' they have started to swell

Surfer · 4 Sep 2010 at 16:50

done a bit of googling and it could be this (if its not the capacitors)

Its probably a dry joint transistor in the power board. If its the same as mine (Model PS42Q96HD) then take the power board out, look on the front for a transistor labelled QX801, its screwed to one of the heat sinks and thats the one that controls the power on/off relay which is what your can hear clicking. Turn the board over and resolder the legs. That sorted my problem out.

one solution apparently from samsung themselves

I had the same problem with my samsung plasma turning itself off, after speaking to samsung they gave me advice that seems to sort it out (or at least it did on mine)
1. Make sure the TV is plugged in but on standby
2. On your remote control locate 4 buttons
•Info (below enter/ok)
•Menu
•Mute
•Power
when you have located them push them in that order as quickly as possible, the TV should power up but with an on screen factory menu, push up twice on the remote direction buttons and highlight option 12 (Reset), hit ok and the TV will perform a factory reset, you will have to go through auto scan etc,

Gonna stick back on and try that ^^

Might just end up getting in touch with the retailer dont want to unintentionally damage the tv.

Biohazard · 4 Sep 2010 at 18:05

look at all the boards for dry solder joints, you'll have to pull them out to get a proper look though

by all means try anything you hear of, hopefully it fixes it. if not i'd look into get an electrical engineer to have a gander at the pcb's if all else fails.

Surfer · 4 Sep 2010 at 18:19

Biohazard said:
look at all the boards for dry solder joints, you'll have to pull them out to get a proper look though

by all means try anything you hear of, hopefully it fixes it. if not i'd look into get an electrical engineer to have a gander at the pcb's if all else fails.

thanks Biohazard. I'll certainly do that. I'll update the thread with anything interesting that happens