I have a Sony KDL-46XBR2 that will turn on and I get the green power light. but I don't have sound or picture or backlight. I have tried the flashlight and can't see anything. not sure where to start to troubleshoot.
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
You can start with this:
https://www.badcaps.net/forum/showthread.php?t=39740Never 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: Sony KDL-46XBR2 no sound,backlight, or picture just green light
post some pics. if you can, grab a manual, try here http://elektrotanya.com/?q=showresult&what=sonyQuit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
be careful when checking power supply aka g board, HIGH VOLTAGE, I have a kdl-46s4100 with same problem, with power off, try unplugging the plug on power supply on mine its cn303 it's labeled bl-on, then turn tv on, backlight should go on.Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
I found another post with the same model TV and same problem. I was told to check the fuse on the T-Con. I tested the fuse and it was bad. replaced fuse and now the TV works again.Attached FilesComment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Why did the fuse blow? Will it happen again?Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Not sure why the fuse blew. The tip I got was to replace the fuse if it was bad so I did. I did check for shorts and didn't find any.Comment
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Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
this makes me think I got 2 bad or uncompatible tcons.Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Where *is* the T-Con board? Is it embedded in the panel? The service manual doesn't mention it at all, and I stopped disassembly at the chassis frame level, without taking anything off the panel itself. Mine also has a black screen, no audio (now that we've lost input source by experimenting with the remote to get the picture back), but nice solid green power light and Sony logo light. I acquired another KDL-46XBR2 on CL, and its only apparent problem was impressive screen-wide spiderweb cracks in the display that you see only when the CCFLs come on (two clear pressure points on the front of the screen caused this, looks like). I swapped out the AU, G1, D1, D3, QT, QM, and BE2 boards with no change. The remote test sequence (Display, 5, VOL-, PWR) produces no visible effect when the unit is on (but it doesn't power off the unit, so I assume that both of the BE2s are working OK).
Is a T-Con swap a reasonable thing to try? I can blindly proceed to strip the back of the panel assembly where the big heat sink w/fins is located - I assume that the T-Con board is under that heat sink, although the sink itself is mounted to the chassis frame (which sits on, but isn't part of, the panel). I see T-Cons listed on ebay for this model, so I assume it is removable without destroying the panel. Any guidance here?Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
https://www.badcaps.net/forum/attach...0&d=1418786336
Top center under the heatsink and the metal shield.
"Is a T-Con swap a reasonable thing to try?" if it is the LCD panel model.Last edited by budm; 01-02-2015, 09:25 PM.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: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Thanks! I'll give it a shot. I'm getting really proficient at taking this thing apart and putting it back together.
I wonder if I should also swap out the inverter boards at the same time, while I have everything apart?Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
I checked fuse F1 on the old T-Con and it is open. I don't know why it blew, but I figured it would be one of three causes:
1. The T-Con itself failed
2. The BE-2 board failed at the LVDS interface, taking down the T-Con too.
3. The panel failed, taking down the T-Con too.
The T-Con and BE-2 replacements came out of a working KDL-46XBR2 with a physically damaged LCD screen, so if the fix didn't work, then the panel would be the culprit, and at $2005 + another $2359 core charge, that replacement won't be happening. Does Sony even stock those parts at such a ridiculous price any more? I can't believe anyone would pay that much.
Replacing the T-Con board did the trick, and the TV is working fine now. I located and downloaded the Sony Training Manual from manual-archives.com. It's titled "Sony KDL-46XBR2 Training Manual FIX Direct-View LCD Television Chassis". It saved me a lot of steps to get at the T-Con, although Sony claims the T-Con board is not a "replaceable part", and must be purchased as part of the panel. It also has setup and diagnostics instructions to test and adjust the set, as well as all the troubleshooting flowcharts for different symptoms and voltages at testpoints.
Thanks for the help!Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
www.elektrotanya.com has lots of SONY, SAMSUNG training manuals.
I put some traIning manuals here too including the T-CON.
https://www.badcaps.net/forum/showthread.php?t=25810Last edited by budm; 01-03-2015, 11:27 PM.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: Sony KDL-46XBR2 no sound,backlight, or picture just green light
here are some pictures of the T-con location and Fuse location on this repair.Attached FilesComment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
How do I take out the tcon board, it's underneath the big frame with boards on top..Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
what I did was remove some of the screws to the frame and then I was able to lift the frame just enough to un screw the t-con cover.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Thank you for the reply. Now I lifted up a bit of frame and got to the tcon board just like you said. Now how do i lift the tcon board? It seems that it's stuck or it won't lift in the middle. Did you buy a new tcon board or just replace the fused? I ohm check the fuse and f1 and f2 are open.Comment
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Re: Sony KDL-46XBR2 no sound,backlight, or picture just green light
Ok I got the t-con board out.... where did you get your tcon board replacement?Comment
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Hi
Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first ‘decent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
Hi
Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first ‘decent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
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I have an 820-2610-A motherboard that has no green light.
I have noticed is when I do a SMC reset the light on the Magsafe blinks.
From My understanding, the sys onewire circuit is responsible for the green light on the magsafe
The sys onewire circuit on this model and others is more involved
I was hoping if anyone knows about this and how it works, can reply and let me know
I know this is an old model but I am sure there are people who still works on these or knows about them
I get 1.1v on the C7771 capacitor and will replace... -
SONY KDL-52ex700: No picture, No sound, No backlight but gets Standby & Green light
We came one evening & realized this problem when tried to turn on the TV (SONY KDL-52ex700), there has been, no sound, no picture, no click sound (for backlight).
Here is the sequence I have checked so far.
1. Pressing the Energy saving switch button, TV used to turn ON green light, get backlight click sound & used to show Sony logo with sound
- None above happen anymore. No green light, No sound, no picture, No backlight
2. Pressing the power switch button... -
My friend dropped it off and asked me to look at it. Like the title says. The power button works. The TV turns on but no light no flicker. Nothing at all. Also, check out the grey wire. It's burnt. The board says it's the power wire to the main board. Any ideas?...
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