20 Most Recent Panasonic VIERA TX-L42E5B 42" LED TV 1920x1080, 50 Hz, Freeview HD, HDTV, LED Backlight Questions & Answers

When an abnormality has occurred to the unit, the protection circuits operate and set the unit to stand by mode. At this time the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit. Fault maybe on the A board 3.3V SOS give me your email & i send you the full timing chart.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electro-medical.blogspot.com/ If blinks continue without any pause, the main board is faulty.

It can also be the YMain board or the back light inverter board or a capacitor or fuse has blown on the power supply board. Which you usually lose sound before you lose both sound and picture. Try to hard reset is for about 4-6 hours by completely unplugging it.

Three blinks of the power LED indicates an over-current or over-voltage condition in one of the DC supplies of the AP board. The AP board is repairable. Therefore the use of an ohmmeter and peak-hold-voltmeter is required to determine the cause of the shutdown. An over-voltage condition is definitely a defect of the AP board. An over-current condition may be due to a short circuit located in the AP board, A board, or the LCD panel.

Could be a bad remote, that button isn't responding

Here's the manual; http://www.manuals365.com/swf/panasonic/tc50pu54_adv.html Hope this helps.

Panasonic Viera TC 42PX24 Operating Instructions Manual https://panasonic.net/cns/prodisplays/download/pdf/instructions/TH-55_49_42AF1U_W_Eng.pdf https://www.manualslib.com/products/Panasonic-Viera-Flat-Screen-Tv-2309480.html

I had the same problem with my Viera. if you disconnect the power and ribbon cable from the YSUS board (check youtube for how), the light led will blink 6 times, indicating the YSUS is bad. Check ebay for TNPA5175 board (about $115-160). The pop is one of the DG402RP chips burnout. These are about $4, but only available from China. If you can wait a month for delivery, you can solder the new one to replace the bad one. You may want to purchase several in case more are bad or it happens again.

That probably won't work. You'll have that problem until you get a new TV.

I would say that's pretty much had it ,if there's smoke coming from the back something has burnt out I would take it to a TV specialist to see if it can be repaired Nick

Need service, your safety shutdown circuit is functioning properly.

well, this tutorial may be helpful, but I am not sure because I do not really know your question. Samsung TV MP4 Solution The Best Way to Samsung TV Won Play MP4 Files

I presume you are unable to activate the on screen menu after the picture goes, if you can then heat for setup or initial set up and factory reset and see if that clears the problem. My guess would be it needs a service engineer to look at it there may be a faulty part which fails shortly after power up. If by Off it is just in standby then try pulling the plug out for an hour to let it cool down then if that works do a factory reset to clear any software problems. Hope this helps.........

Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.