Re: Panasonic TX-L42U3B dead screen and blinking standby lights
blink codes
blink codes
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
£29.40 + p+p for a mainboard from flat tv parts if that is the case !Comment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Beware as we have found on the plasmas at least 14 blinks whilst coding for an A board fault can in some cases be caused by other boards.
I would check the full power on process. Check for all power on signals, check for 24V, 12V, etc.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-L42U3B dead screen and blinking standby lights
I've tried two different tcon boards both with no success so what would you say is the next step ?Comment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Next can you check the voltages see if they come up.Last edited by ReeceyBurger123; 06-28-2015, 03:19 PM.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Here are some more pictures of the inverter boardsAttached FilesComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
MainboardAttached FilesComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
power supply boardAttached FilesComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Master inverter boardAttached FilesComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Tcon BoardAttached FilesComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Where am I checking for the voltages reece can you highlight using paint ?Comment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Right after removing the boards and refitting them i've managed to get a picture and retune left it running in total it was on with picture and sound all working mint through hdmi with the xbox on then after an hour it was back to square 1 again
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
If physical handling brought it back to life, that suggests cracked solder joints or components or otherwise an intermittent connection somwhere."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
tried the removal of individual boards to try and replicate again and no dice this time around still got the same 14 blinks and no backlight activity at all still
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Re: Panasonic TX-L42U3B dead screen and blinking standby lights
Also tried the power button +volume down keypress on the side of the tv and after 30 secons of holding it in all i get is a click and back to the blinksComment
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I have a 2019 75" x950g, and while playing a movie, the screen suddenly went dark in a weird way, where it faded towards one corner into being fully black. Now the TV turns on, and the backlight comes on, but there is nothing displayed except black. Sound still comes through the TV speakers, and i have tried doing a hard reset using the volume - and power buttons while plugging the display back in, but it did not fix it. I can confirm that pressing buttons on my remote is still doing "something" because I'm hearing sound still, even though the screen is black.
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I am working on a QN750Q8FNBFXZA. Dead except the standby light. It blinks what appears to be 1 3 1 2. 1 long blink, pause, 3 short, pause, 1 long, pause, 2 short, pause, repeat. A service manual would be very helpful, or if anyone knows these error codes. Thanks! -
Hello,
I have a Lenovo here that does not want to power on. The motherboard appears to be clean, no sign of corrosion or obvious fried components. When plugged in, I see 3 blinking lights and then off. It would cycle the 3 blinking lights every 10 seconds or so as long as I have the adapter plugged in. Amp meter shows 20 volts, 0.224 amps, no fan spin, red light indicator near the charge port.
Thermal camera shows a section of the motherboard that is warmer than the rest. It is near the connector labels JRTC1 (CMOS battery). Diode measurement to ground for pin 1 = OL,... -
Samsung UN50KU6300 dead no standby led
01-04-2024, 01:33 PM
Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it...05-22-2024, 02:07 PM -
Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated.
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