W241D (W240D) flickering Problem

storexxm · 10-26-2012, 04:10 PM

I got the same problem like in this video

http://www.youtube.com/watch?v=YN12vGegYmY

Its the gm5868H-LF processor on the motherboard, which runs hot.
I already renewed all caps on the PSU.

[IMG]http://img189.**************/img189/3639/271020121065.jpg[/IMG]

Uploaded with **************

[IMG]http://img706.**************/img706/6058/271020121066.jpg[/IMG]

Uploaded with **************

Seems a lot got the same problem, but i don´t think its a solution to install a fan, cuz i think the problem is getting worse-

Maybe someone know that issue and can help me here.

Greetings from Austria.

nnname · 10-26-2012, 04:55 PM

It's interesting to see that Hyundai changed the imaging processor in the latest revision which I own (EV3.84, see photo).

Are you really sure that the above mentioned processor runs hot? I would rather expect one of the power transistors to run too hot.

Maybe a few heat sinks would solve the problem.

By the way, which capacitors did you use to replace the old "JH" (Jianghai) capacitors?

storexxm · 10-26-2012, 05:26 PM

instead of the JH i actually use YAGEO.
yep i am sure it is the imaging processor.
i seperated the PSU from the MoBo and blow against the IP.
actually i put a heatsink on the chip which also "solved" the problem.

of course the power transistor gets hot, but the image processor too

did u also got problems with your hyundai screen?
till now i don´t know whats the difference between the 241D and the 240W?

nnname · 10-26-2012, 07:32 PM

Fortunately, my Hyundai still works fine, even after three and a half years daily use

.

The only flaw is the "vertical color lines" error which occurs very rarely when switching on the monitor. It seems to be quite normal for this monitor.

The difference between the W240D and the W241D is the TFT panel. Whereas the first mentioned only uses a more ore less bad TN panel, the W241D has a very good S-PVA panel by Samsung.

(Bezüglich deines Eintrags in meinem Profil: Ich würde im Sinne einer besseren internationalen Verständlichkeit gerne weiterhin auf Englisch schreiben. Den Hyundai werden schließlich nicht nur deutschsprachige Nutzer besitzen.

)

**budm** · 10-26-2012, 08:30 PM

Looking at the video board, it looks like the two regulator ICs (they have 3 legs with big tab on one side) have been running hot, you can see the board in that area has brownish color. You should check the value & ESR of those 3 caps to the left and two caps to the right of those two regulators.
Also take the reading of each pin of the regulator, black probe on the chassis and red probe on each pin and report the readings. If the caps do not filter out the AC ripple properly and let it running through the circuits, it can cause over heating problem.

storexxm · 10-27-2012, 03:26 AM

how do i know what panel i got inside of the screen?
(there is only one sticker at the back of the monitor which says W241D)
every other part is described with the W240D.

@budm: thanks, but as u can see the video board from nname got the same brownish color near the regulator IC´s... but i´ll check that.

@nname: did u changed the caps on your video board? as i wrote in the first post i already changed the caps on the psu, but i guess i should do the same with the 6 caps on the video board. (i just saw that one domed at the bottom... could that be the problem!?)

[IMG]http://img41.**************/img41/2984/271020121067.jpg[/IMG]

Uploaded with **************

nnname · 10-27-2012, 07:51 AM

@ storexxm:

If the sticker on the back of the casing says "W241D", you have the W241D

. Some PCB stickers and even the OSD nevertheless say "W240D" because they were also used in the TN panel model. Hyundai just did not change this details.

All caps in my monitor are still original.

storexxm · 10-28-2012, 02:38 PM

nobody got an idea what the problem could be that the processor runs hot !?
the only cap i didn´t change is the big one on the PSU.. or could it be a transformator..?
please help

**Th3_uN1Qu3** · 10-28-2012, 02:44 PM

In your pic of the logic ("video") board, the G-Luxon capacitor with the bung pushed out is likely bad. Replace that and see what happens.

storexxm · 10-28-2012, 03:02 PM

already changed them with caps with more capacity and volt...
problem is the same...

could it be a other component part ?
just curious but could it be the t-con board that the lcd processor run´s hot?
its such a common problem but i am puzzled there is no solution.

and i think it´s not a real fix to put a heatsink on the chip ...

i am not sure but i think the flickering is getting lower when i turn the brightness and contrast down...

could it be the big cap on the PSU (i never saw a instruction to change it just on purpose)

nnname · 10-28-2012, 04:28 PM

If the big capacitor was faulty, the whole monitor wouldn't work — it should be all right.

So if you already replaced all G-Luxon caps on the video board, maybe the ESR of the new caps is still too high for the circuit?

Please compare the data sheet of the original capacitors with that of your replacements.

storexxm · 10-29-2012, 07:27 AM

instead of the (maybe dead) cap i used a 35V 470µ from the PSU (which was not domed)
is it also very important to use low ESR caps for the PSU (i just bought them @ conrad... guess u know that shop

)
could it be a problem when i use higher voltage and higher capacity instead of the old caps?

i read this -> http://www.badcaps.net/forum/showthread.php?t=1458 -> but my technical know how and english is too bad that i get the information about the ESR in the given data sheet ;(

nnname · 10-29-2012, 09:20 AM

The capacity of the replacement caps should be as high as of the originals. A higher or lower value can affect functionality negatively. A higher proof voltage is okay (and even better).

So you should try to use more suitable replacement caps. Because I didn't find any data sheets for Yageo caps (which I only found at Conrad

), I cannot tell you if they are suitable for high ripple currents that are common at PSU circuits. They even can go bad after a few days/weeks.

You can find really good explanations of "low ESR" and much more in German at the Elko-Verkauf website.

storexxm · 10-29-2012, 10:24 AM

i found this pdf... think there are the specs. of the caps.

http://www.yageo.com/exep/pages/down...p_20120524.pdf

but as i understand it correctly, the ESR is only important for the lifetime...
but the monitor doest work correctly at all... it might not be a long term solution if i take any kind of cap, but it should work anyway...

is my idea correct ?
because its the SAME issue, no matter which caps i use

what do u think about budm`s idea ? shall i change the silver small caps too....?
stupid overheating problem ---

storexxm · 11-13-2012, 02:36 AM

now i tried it with a passiv cooling system... seems like the problem can´t get fixed-

**selldoor** · 11-13-2012, 04:09 AM

I dont think said which series of Yageo caps you bought as replacements so we cant check them on the datasheet.
You never posted the results of the test Budm suggested on the Voltage regulators.

If the caps are not good enough the voltage at the regulators may be incorrect causing them to overheat.
If the voltage at the regulators is incorrect the voltage supplied to the main processor may be incorrect causing it to overheat.

**tom66** · 11-13-2012, 04:14 AM

I doubt Hyundai changed imaging processors; that would require a new board. More than likely ST acquired Genesis or something...

Here is a news release: http://investors.st.com/phoenix.zhtm...000&highlight=

storexxm · 11-14-2012, 04:03 PM

u mean the capacitors on the power or the video board ?
i can´t believe that the old "broken" caps can produce the same error like the new ones !?
the caps have more µF and more voltage.. so there should be no problem...
greetz-

manray · 01-28-2013, 06:23 AM

Hello, i had a problem with my W240D V2, problem shown here:

http://www.youtube.com/watch?v=8gdDYlKLzVQ

i changed the LDO (shown on this image):

http://www.hostingpicture.fr/upload/...99ba2ed30a.jpg
http://www.hostingpicture.fr/upload/...ad2f55f55c.jpg

My W240D V2 works fine for 1 month now.
Hope i help you in any way.

PS: excuse me for my english.

manray · 01-30-2013, 04:59 AM

Quote:

Originally Posted by manray

Hello, i had a problem with my W240D V2, problem shown here:

http://www.youtube.com/watch?v=8gdDYlKLzVQ

i changed the LDO (shown on this image):

http://www.hostingpicture.fr/upload/...99ba2ed30a.jpg
http://www.hostingpicture.fr/upload/...ad2f55f55c.jpg

My W240D V2 works fine for 1 month now.
Hope i help you in any way.

PS: excuse me for my english.

I think i made a mistake, the components that i replaced are voltage regulators not LDO. Right?

10-26-2012, 04:10 PM	#1
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	W241D (W240D) flickering Problem I got the same problem like in this video http://www.youtube.com/watch?v=YN12vGegYmY Its the gm5868H-LF processor on the motherboard, which runs hot. I already renewed all caps on the PSU. [IMG]http://img189.************/img189/3639/271020121065.jpg[/IMG] Uploaded with ********** [IMG]http://img706.**********/img706/6058/271020121066.jpg[/IMG] Uploaded with ************ Seems a lot got the same problem, but i don´t think its a solution to install a fan, cuz i think the problem is getting worse- Maybe someone know that issue and can help me here. Greetings from Austria.

10-26-2012, 05:26 PM	#3
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem instead of the JH i actually use YAGEO. yep i am sure it is the imaging processor. i seperated the PSU from the MoBo and blow against the IP. actually i put a heatsink on the chip which also "solved" the problem. of course the power transistor gets hot, but the image processor too did u also got problems with your hyundai screen? till now i don´t know whats the difference between the 241D and the 240W? Last edited by storexxm; 10-26-2012 at 05:30 PM..

10-26-2012, 07:32 PM	#4
nnname New Member Join Date: Jul 2010 City & State: Germany I'm a: Knowledge Seeker Posts: 18	Re: W241D (W240D) flickering Problem Fortunately, my Hyundai still works fine, even after three and a half years daily use . The only flaw is the "vertical color lines" error which occurs very rarely when switching on the monitor. It seems to be quite normal for this monitor. The difference between the W240D and the W241D is the TFT panel. Whereas the first mentioned only uses a more ore less bad TN panel, the W241D has a very good S-PVA panel by Samsung. (Bezüglich deines Eintrags in meinem Profil: Ich würde im Sinne einer besseren internationalen Verständlichkeit gerne weiterhin auf Englisch schreiben. Den Hyundai werden schließlich nicht nur deutschsprachige Nutzer besitzen. ) Last edited by nnname; 10-26-2012 at 07:38 PM..

10-26-2012, 08:30 PM	#5
budm Badcaps Veteran Join Date: Feb 2010 City & State: S.F. Bay area My Country: USA Line Voltage: 120V 60Hz I'm a: Knowledge Seeker Posts: 39,206	Re: W241D (W240D) flickering Problem Looking at the video board, it looks like the two regulator ICs (they have 3 legs with big tab on one side) have been running hot, you can see the board in that area has brownish color. You should check the value & ESR of those 3 caps to the left and two caps to the right of those two regulators. Also take the reading of each pin of the regulator, black probe on the chassis and red probe on each pin and report the readings. If the caps do not filter out the AC ripple properly and let it running through the circuits, it can cause over heating problem. __________________ Never stop learning Basic LCD TV and Monitor troubleshooting guides. http://www.badcaps.net/forum/showthr...956#post305956 Voltage Regulator (LDO) testing: http://www.badcaps.net/forum/showthr...999#post300999 Inverter testing using old CFL: http://www.badcaps.net/forum/showthr...er+testing+cfl Tear down pictures : Hit the ">" Show Albums and stories" on the left side http://s807.photobucket.com/user/budm/library/ TV Factory reset codes listing: http://www.badcaps.net/forum/showthread.php?t=24809

10-27-2012, 03:26 AM	#6
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem how do i know what panel i got inside of the screen? (there is only one sticker at the back of the monitor which says W241D) every other part is described with the W240D. @budm: thanks, but as u can see the video board from nname got the same brownish color near the regulator IC´s... but i´ll check that. @nname: did u changed the caps on your video board? as i wrote in the first post i already changed the caps on the psu, but i guess i should do the same with the 6 caps on the video board. (i just saw that one domed at the bottom... could that be the problem!?) [IMG]http://img41.************/img41/2984/271020121067.jpg[/IMG] Uploaded with ************

10-27-2012, 07:51 AM	#7
nnname New Member Join Date: Jul 2010 City & State: Germany I'm a: Knowledge Seeker Posts: 18	Re: W241D (W240D) flickering Problem @ storexxm: If the sticker on the back of the casing says "W241D", you have the W241D . Some PCB stickers and even the OSD nevertheless say "W240D" because they were also used in the TN panel model. Hyundai just did not change this details. All caps in my monitor are still original.

10-28-2012, 02:38 PM	#8
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem nobody got an idea what the problem could be that the processor runs hot !? the only cap i didn´t change is the big one on the PSU.. or could it be a transformator..? please help

10-28-2012, 03:02 PM	#10
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem already changed them with caps with more capacity and volt... problem is the same... could it be a other component part ? just curious but could it be the t-con board that the lcd processor run´s hot? its such a common problem but i am puzzled there is no solution. and i think it´s not a real fix to put a heatsink on the chip ... i am not sure but i think the flickering is getting lower when i turn the brightness and contrast down... could it be the big cap on the PSU (i never saw a instruction to change it just on purpose)

10-28-2012, 04:28 PM	#11
nnname New Member Join Date: Jul 2010 City & State: Germany I'm a: Knowledge Seeker Posts: 18	Re: W241D (W240D) flickering Problem If the big capacitor was faulty, the whole monitor wouldn't work — it should be all right. So if you already replaced all G-Luxon caps on the video board, maybe the ESR of the new caps is still too high for the circuit? Please compare the data sheet of the original capacitors with that of your replacements. Last edited by nnname; 10-28-2012 at 04:46 PM..

10-29-2012, 07:27 AM	#12
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem instead of the (maybe dead) cap i used a 35V 470µ from the PSU (which was not domed) is it also very important to use low ESR caps for the PSU (i just bought them @ conrad... guess u know that shop ) could it be a problem when i use higher voltage and higher capacity instead of the old caps? i read this -> http://www.badcaps.net/forum/showthread.php?t=1458 -> but my technical know how and english is too bad that i get the information about the ESR in the given data sheet ;(

10-29-2012, 09:20 AM	#13
nnname New Member Join Date: Jul 2010 City & State: Germany I'm a: Knowledge Seeker Posts: 18	Re: W241D (W240D) flickering Problem The capacity of the replacement caps should be as high as of the originals. A higher or lower value can affect functionality negatively. A higher proof voltage is okay (and even better). So you should try to use more suitable replacement caps. Because I didn't find any data sheets for Yageo caps (which I only found at Conrad ), I cannot tell you if they are suitable for high ripple currents that are common at PSU circuits. They even can go bad after a few days/weeks. You can find really good explanations of "low ESR" and much more in German at the Elko-Verkauf website. Last edited by nnname; 10-29-2012 at 09:24 AM..

10-29-2012, 10:24 AM	#14
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem i found this pdf... think there are the specs. of the caps. http://www.yageo.com/exep/pages/down...p_20120524.pdf but as i understand it correctly, the ESR is only important for the lifetime... but the monitor doest work correctly at all... it might not be a long term solution if i take any kind of cap, but it should work anyway... is my idea correct ? because its the SAME issue, no matter which caps i use what do u think about budm`s idea ? shall i change the silver small caps too....? stupid overheating problem ---

11-13-2012, 02:36 AM	#15
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem now i tried it with a passiv cooling system... seems like the problem can´t get fixed-

11-13-2012, 04:09 AM	#16
selldoor Slow Learner Join Date: Dec 2010 City & State: Lancashire UK Posts: 7,853	Re: W241D (W240D) flickering Problem I dont think said which series of Yageo caps you bought as replacements so we cant check them on the datasheet. You never posted the results of the test Budm suggested on the Voltage regulators. If the caps are not good enough the voltage at the regulators may be incorrect causing them to overheat. If the voltage at the regulators is incorrect the voltage supplied to the main processor may be incorrect causing it to overheat.

11-13-2012, 04:14 AM	#17
tom66 EVs Rule Join Date: Apr 2011 City & State: Leeds My Country: UK Line Voltage: 230Vac 50Hz I'm a: Professional Tech Posts: 32,373	Re: W241D (W240D) flickering Problem I doubt Hyundai changed imaging processors; that would require a new board. More than likely ST acquired Genesis or something... Here is a news release: http://investors.st.com/phoenix.zhtm...000&highlight= __________________ Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead! Free service manuals: http://www.toms-service-manuals.com/ -- 72 LED/LCD TVs, 5 monitors, 28 plasma TVs, and 2 AVR 6.1 amplifiers fixed! -- I repair Pioneer 9G Plasma Main Boards & KRP-M01 Media Receivers (PM me for info) 2 Pioneer KURO 9G, 12 Panasonic LCD/Plasma, 1 Sony LCD, 1 NEC Plasma, 2 Yamaha HTS, 5 Sharp LCDs, 5 Toshiba LCDs, 7 Philips Plasma/LCD, 1 Hitachi Plasma, 11 LG LCD/Plasma, 18 Samsung LED/LCD/Plasma, 1 Thomson Plasma, 1 Atec LCD, 1 Hanspree LCD, 1 Xerox LCD, 1 Harwa LCD, 2 Proview LCD, 2 Hyundai LCD, 1 "Onn" LCD, 1 Grundig LCD, 1 Dell LCD, 1 iiyama LCD, 1 Acer LED, 1 Logik LCD, 1 Baird (China) LCD, 6 Bush LCDs, 22 Vestel LCDs (Best->Worst)

11-14-2012, 04:03 PM	#18
storexxm Member Join Date: Oct 2012 City & State: 1180 My Country: Vienna I'm a: Knowledge Seeker Posts: 92	Re: W241D (W240D) flickering Problem u mean the capacitors on the power or the video board ? i can´t believe that the old "broken" caps can produce the same error like the new ones !? the caps have more µF and more voltage.. so there should be no problem... greetz-

01-28-2013, 06:23 AM	#19
manray New Member Join Date: Sep 2012 City & State: Paris My Country: France I'm a: Knowledge Seeker Posts: 2	Re: W241D (W240D) flickering Problem Hello, i had a problem with my W240D V2, problem shown here: http://www.youtube.com/watch?v=8gdDYlKLzVQ i changed the LDO (shown on this image): http://www.hostingpicture.fr/upload/...99ba2ed30a.jpg http://www.hostingpicture.fr/upload/...ad2f55f55c.jpg My W240D V2 works fine for 1 month now. Hope i help you in any way. PS: excuse me for my english.