Samsung LNS3241D - No picture, sound and backlight OK

[budm]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I have a samsung un50h6350af when I turn the tv on the backlight comes on but the screen is black. You can hear the sound. When I took the back off looking at the tcon board if i disconnect the right side ribbon cable going to the led half the screen will work. So I thought it was the tcon board. I went to eBay and bought the same exact one and replaced it. Doing the same thing. Can someone please help me.

Start a new thread with make and model + good clear pictures of what we are dealing with.

[Jtabor2011]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I have a samsung un50h6350af when I turn the tv on the backlight comes on but the screen is black. You can hear the sound. When I took the back off looking at the tcon board if i disconnect the right side ribbon cable going to the led half the screen will work. So I thought it was the tcon board. I went to eBay and bought the same exact one and replaced it. Doing the same thing. Can someone please help me.

[davi0220]

Re: Samsung LNS3241D - No picture, sound and backlight OK

yup, I fixed my LN-S3241D Samsung LCD.....been trying to figure out with lot's of help with the Forums and clue's on youtube, from no picture with sound with vertical lines to the new LCD again I have...answer to mine was the TCON, though I started out with the capacitors which one was slightly buldged...then turned it on and was good for only 10 mins..then went blank with vertical lines again...searched for TCON which was my second obstacle as I learned it from amateur tv techs on youtube..thanks peeps, it was interesting speculating the problem..infact I may make a hobby of it and start fixing other peoples tv problem...thankfully I happened to find/search a former tv repairman whom is retired but still works at home fixing t.v.'s stumbled on him on craigslist here in MN than ordering 75 to 80 dollars on ebay which he sold it to me for 20 bucks...Installed it and was happy to get my LCD back to work infact looked nice! Here's my result within 3 weeks learning from peeps!......

[nomoresonys]

Re: Samsung LNS3241D - No picture, sound and backlight OK

would TCON solve this problem I'm having same problem (no picture has sound) I recently ordered the caps (equivalent) installed them since i've noticed 2 were bulged and decided replace them all from clean slate...it was great for good 10 mins...until it came back how it was no picture and but sound with lines on the screen as illustrated on my pic..

go for the tcon, theyre pretty reasonably priced, if it dont fix it, then you at least eliminated it and you have a spare if you ever need it.

[davi0220]

Re: Samsung LNS3241D - No picture, sound and backlight OK

would TCON solve this problem I'm having same problem (no picture has sound) I recently ordered the caps (equivalent) installed them since i've noticed 2 were bulged and decided replace them all from clean slate...it was great for good 10 mins...until it came back how it was no picture and but sound with lines on the screen as illustrated on my pic..

[dcapper]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I'm having a similar problem and I was wondering if any of you can check out the thread I started and give me some advise. It would be appreciated.

https://www.badcaps.net/forum/showth...d=1#post401162

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Hi guys,
I have the same problem with the exact same model Samsung. Just wondering where you purchased new (or used) t-con board, price, and see if everything was still working. Much appreciate any suggestions! Thanks

eBay is a good source for boards.

[kammerer1]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Hi guys,
I have the same problem with the exact same model Samsung. Just wondering where you purchased new (or used) t-con board, price, and see if everything was still working. Much appreciate any suggestions! Thanks

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Yep, it was the T-con board. Replaced it and all is well again. Thanks everyone for the help.

[Harvass]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I just wanted to let you know that i have been following this thread with the same problem and i went ahead and bought a used t-con board and it fixed my problem.So i can say that i'm 99% sure a t-con board will fix your problem.

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

If the V33 point measures the same as that odd PANEL_V voltage, I'd say it's fine.

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Thank you for your assistance Tom. I do have one more observation and another question to make sure the problem is not with the main board.

In an earlier post i listed voltages from the LVDS cable with all cables connected. Last night i unplugged the LVDS cable on the main board to gain access to the rest of the pins on that cable, this is what i measured:

GND; -0.001
A1+; 1.028
A2-; 0.795
GND; 0
CLK+; 1.308
A3-; 1.220-1.226
GND; 0
PANEL_V; 3.528
GND; 0
GND; 0
PANEL_V; 5.37
PANEL_V; 5.37

Notice that one PANEL-V is lower than the other five. Could this be the problem or is this normal?

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I just can not find an L33 anywhere. There are several V33's indicated and each measures 3.3VDC.

I did notice a POW_ON label near RP27 with a solder connection that i could probe. It only measures 0.005VDC. It is located just above the LVDS cable, above and to the left of F1. Any ideas that this is normal?

My error. I meant V33.

I'm drawing blanks. I say just replace the T-con and see if that fixes it.

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I just can not find an L33 anywhere. There are several V33's indicated and each measures 3.3VDC.

I did notice a POW_ON label near RP27 with a solder connection that i could probe. It only measures 0.005VDC. It is located just above the LVDS cable, above and to the left of F1. Any ideas that this is normal?

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Thanks, I'll check out L33V when i get home.

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

On the righthand side, L33V. What voltage does that measure at?#

Since you are getting some voltages on the LVDS, I'm very tempted to say T-con.

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I did measure F1 Tom. Resistance is near zero with the power off. I measure 5VDC on both sides with power on. Thanks for the feedback.

It may be interesting to note that the TV behaves exactly the same with the LVDS cable (I believe that is the cable to the T-con from the main board) connected or not.

Please keep the suggestions coming...

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

I see one fuse, F1, on the board, to the right of the connector. Can you test that fuse?

[Kristofor]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Thanks Tom, Attached is a pic of the Tcon board...

[tom66]

Re: Samsung LNS3241D - No picture, sound and backlight OK

Thank You Bill.

I did not know how to isolate the problem between the main board and Tcon. Is there a preferred place to purchase the Tcon board? Any places i should stay away from? Should i get the cable too?

If it makes a difference, I did measure a few voltages on the LVDS connector on the main board side (ones that i could get to). All measured referenced to frame ground, VDC:

AO1; 1.159
A1-; 1.186
GND; 0
A2+; 1.235
CLK-; 1.156
GND; 0
A3+; 1.167
NC; 0
NC; 0
GND; 0
PANEL_V; 5.36
PANEL_V; 5.36
PANEL_V; 5.36

Thanks again.

Can you take a picture of the T-con and post it here?