20 Most Recent Sylvania 6842THG 42 in. Plasma HDTV Questions & Answers

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.

power supply board has defective components,check for swollen capacitors and replace them,if problems still not solve email me at [email protected] .for further instructions

Go back and ask him.

Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

If the display panel (PLASMA DISPLAY PANEL--PDP) is damaged or broken etc it is fatal as the cost of the part alone will exceed the cost of a new set.

This is an issue with the control module in this unit that needs to be replaced. the control module that puts this thing to sleep has malfuctioned my advise is if its worth it to have it looked at by a qualified tech.. Thanks Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Evening It is not energy saving that is bothering you,is it? Try SET-UP and see if you can change it there. Good luck Kolbrun

there is a short, could be anything....Check amount of blinking light

Good day!!!!I need to know if the LED lights ON or blinking if that so how many blinks?If you have multimeter kindly try this procedure:

1. Open the back cover.
2. Look at the power supply board.(it is usually connected directly to the power cord)
3. Get your multimeter (range in DC).
4. measure all output to the power supply such as 5vdc,3.3vdc,12vdc,etc..It is usually indicated on the power supply output connector.
5. Place your black test probe to the ground and the red one is for the positive voltage as stated above and also measure VS and VA voltage..

Then let me know what are the readings of all voltages together with the original voltage marked on those voltages..

U have some mechanical skills like take things aparts and putting things it back togther again and some electronic troubleshooting skills?Yes?Than this tv must have be take aparts and check those 2 tv buffer boards out which one it is dead or both of those buffer boards are dead the 2 buffer buffer boards that are help providing the tv backlight for the tv plasma screen panel to produces pictures it is the problems.No mechanicals skills at all and understanding nothing about electronic circuitries at all.Call all tvs shops around in ur cities area and get the best quotes for the best prices to fix ur tv.

It should default to standby is there is no signal being sent to it.
You have to provide a signal, at least an external antenna. Try hooking something up with a known signal, like a DVD player or something.

-if you have some lightening led on face panel of your TV screen (sleep indicator) and TV is can't to turn to ON mode-in that case is broken Electronic switch on chassis body. If anyone led indicator is not lightening - power supply module not able. I'm ready to chat on SKYPE, my nik : friend_zip. Good luck!