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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 -
Re: Samsung LN32A330 Powers up, has audio, no video
Well, I got the replacement T-CON in today and the tv boots up with a glowing screen but no picture. I can hear sound ok via HDMI but only on one input (since I can't change the source). When I press the source button, the source doesn't change. I cannot get a menu to appear.Comment
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Re: Samsung LN32A330 Powers up, has audio, no video
So I tried the one ribbon cable at a time, first the right hand side of the screen and it turns half black/half white like it's supposed to be then after a few seconds the screen turns completely white and then the half black half white switches sides. With the other ribbon unplugged it stays half white/half black constantly.
I pulled out the power supply and tested that 10v 2200uF cap that seems to always go out on this model and in circuit it showed good ESR but it had blank capacitance on the ESR micro. Not sure what that means, so I removed it and soldered in a new Nichicon cap and same thing tested in circuit.
I tested the voltages going from the CMN804 connector and on the line that says 24 DET i am only showing 5v. On the mainboard i see an IC1010 which I think is an adjustable regulator? (1117) has 0 on uppermost pin, 1.25V on the tab and 2.7v on output?Comment
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Re: Samsung LN32A330 Powers up, has audio, no video
Anyway, I figured that since there was no response from the volume or source buttons, the main board is probably bad. I ordered a main board off Ebay part# BN96-07892H which is a substitute part number. Plugged TV in and I heard the chime and the screen came on with snow, finally! I put the original T-CON back in that came with the TV, and it works fine.
It must have been the main board all along.
I tested that first T-CON they sent me that showed an all white screen and it showed an image but like it was faded and all white. (Last picture). So it looks like we made the correct assumption that it was faulty.
Thanks for your help!Attached FilesComment
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Re: Samsung LN32A330 Powers up, has audio, no video
Thanks for the follow-up.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=24809Comment
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Re: Samsung LN32A330 Powers up, has audio, no video
Thanks for the help budm, I am learning a lot.Comment
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The Problem: This player has a toggle switch to select between Stereo, Mono R, and Mono L. Regardless of the setting it outputs the sound to both the L&R audio jacks. In the Mono R position, the audio output level is normal (from both the L and R audio output jacks), in the Stereo position the audio output is about half the volume, and in Mono L, it's about 3/4 the volume. Something about putting it into Stereo mode is causing the volume to drop significantly and I can't figure it out.
The player processes the audio signal using two different reference frequencies. The "R"... -
Hello, everyone!
A co-worker gave me a 55-inch Samsung TV model UN55MU6103F so I can try to fix the following problem... As soon as I plug it in to the wall, the TV turns on, and the display shows a few stripes all over the screen. I took off the back cover and disconnected both ribbon cables that go to the display (one at a time) so by doing that I can narrow down the bad section of the problem, but in both cases the display turns black. I know there are some voltages that I have to check (VGH, VGL, etc.) but don't know what reading each has to show. If anyone could guide me on this,... -
Hi,
My barely 3 year old TV has stopped displaying video, although the video output comes for a few seconds after turning ON which displays the manufacturers logo then shows the home screen (all this with some blue flicker) then the video goes blank and the screen is dark blue with the backlight on. The audio output works perfectly and the TV also takes in voice commands(smart TV).
The TCON board has the following Chips -
Samsung VTU63A0
RT6939 - 2nos.
and all these chips are getting real hot within a minute, I dont know if this is normal.... -
Hi, I have a Samsung UN32M4500 that turns on, has audio but no video. No Samsung splash screen when turning on, but I can see the backlights (screen is just this dark gray color). The TV only has one board, which I replaced from one I purchased from directtvparts on eBay. But still the problem persists. Is my LCD bad? -
Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
More Details
TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
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