as above i have a spot on picture but no sound at all i have checked the settings but nothing i have tried headphones in and even at full wack there is just the slightest sound if u listen close
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as above i have a spot on picture but no sound at all i have checked the settings but nothing i have tried headphones in and even at full wack there is just the slightest sound if u listen close -
Re: panasonic tx-37lzd80 picture but no sound
Picture of the A board? Have you checked if PSU is giving you all voltages? I have a memory that these have a 12V and 17V line, the 17V is audio only. If that went dead no audio. Also there are usually separate regulators, one for audio. You'd need to check to be sure.Last edited by tom66; 04-04-2014, 07:16 AM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: panasonic tx-37lzd80 picture but no sound
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Re: panasonic tx-37lzd80 picture but no sound
Do u need a pic of the backComment
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Re: panasonic tx-37lzd80 picture but no sound
Have you checked any voltages? From memory, they are labelled.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: panasonic tx-37lzd80 picture but no sound
No markings that's why I'm stuckComment
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Re: panasonic tx-37lzd80 picture but no sound
Attaching service manual should help finding the spots to look at on the main.Liberating magic smoke one part at a timeComment
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Re: panasonic tx-37lzd80 picture but no sound
Does it have line level RCA (RED & WHITE) audio out put jack that you can use to feed power PC speakers or stereo to see if you do have normal sound, that way you can tell if the problem is in the pre-amp or in the power amp sections.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: panasonic tx-37lzd80 picture but no sound
I have tried it through my surround sound and nothing is coming outComment
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Re: panasonic tx-37lzd80 picture but no sound
Have you checked the digital optical audio output too?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: panasonic tx-37lzd80 picture but no sound
I ain't got one to try it withComment
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Re: panasonic tx-37lzd80 picture but no sound
K, time to check voltages - the schematic will have the P board voltages on it listed.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: panasonic tx-37lzd80 picture but no sound
I'm looking at them but can not see where the amps are for the speakers or where to testComment
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Re: panasonic tx-37lzd80 picture but no sound
Page 10 has voltage test points...In addition run page 11 selfcheck - will reset TV - see if that sorts it.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: panasonic tx-37lzd80 picture but no sound
On self check it says adav ng and said that the self check failedComment
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Re: panasonic tx-37lzd80 picture but no sound
NG = "No Go". Would seem to indicate a problem with whatever ADAV is, or one of the power supplies leading to it. My guess would be the smaller Analog Devices chip, top right hand corner.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: panasonic tx-37lzd80 picture but no sound
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Re: panasonic tx-37lzd80 picture but no sound
Any test points I can check ?Comment
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Hi, I have a Samsung UE50TU with:
- sound and backlight, but no picture
- when it arrived, it had a picture for a few seconds
- it keeps rebooting
- without ribbon cable between the two panel boards, it does not reboot but I have no picture
- without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
- when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.
- without cable between mainboard and lcd panel and with a jumpered... -
Hi everyone,
I've got this Panasonic TV here with the following symptoms:
* Standby Light is solid RED
* Turning on using the Button on the TV (long press) would change LED to blinking GREEN
* After a couple of seconds, LED is solid GREEN and without picture or sound.
I've tried a couple of things before tearing it apart:
* Resetting using various combinations of powerbutton and volume buttons pressing down while booting.
* Activating Self Check according to service manual using IR Blaster (we have no remote unfortunately)... -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
Hello everyone,
Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
Anyway I still fully expect that there has been something seriously damaged... -
Hi all
I was just given a Samsung TV with the issue. I read various threads and videos and attempted the ribbon tape method to gain an image, but no luck.
Symptom:
No picture no sound.
When I plug in the power cord, Backlight LED turns on for a half second and then turns off. The red LED next to the power button located center bottom flashes 2 or 3 times. When the power button is pressed after, it does the same thing.
No sound at all.
What I tried:
1. I tried unplugging the left or right ribbon...
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