20 Most Recent Sylvania 6842-PEM 42 in. EDTV-Ready Plasma Television Questions & Answers


Open the back of your TV. And check your video wires basically check all of your wires. And yours pictures should come back in a lot of flat screen TVs have an issue with just loose wiring causing no video.

Sylvania... | Answered on Aug 26, 2015


Probably power supply failure. Power is getting to the TV (red light), tries to start (green light) then stops

Sylvania... | Answered on Oct 12, 2012


Finally I have managed to fix my plasma 6842PEM. My problem was the SS (Sustain) Board and not the Power supply. This board is the vertical one to the right connecting to the Screen/Panel. I tested every component on the board and found one of the Transistors on the heat sink was bad, part # 2PG001. This board is made by Panasonic which can be replaced. I got the Transistor which only cost $20.00 including shipping.

To identify wether this is your problem, disconnect the cable comming from the power board and put on the TV, If the green light stays on then this is your problem.

Thanks all for your help.

Laz

Sylvania... | Answered on Jan 08, 2012


This is a fault solution which can be checked and corrected by you assuming that there is no component failure. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit with some of my tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Thank you for using Fixya.


Sylvania... | Answered on Sep 06, 2011


When troubleshooting these units, there are always several variables to consider. First check to see what last occurred with the unit such as did the children play video games, did the electricity go out due to bad weather. You may see that there are many possibilities but let's focus on what occurred last to the unit. Once we determine what happened last, we may isolate the actual cause of the problem. The actual cause may be associated with projection issues, older versions (Picture tube), interference from devices located nearby, and even a radio turned on and located really close to your unit. This is normally known as electromagnetic interference to electronics and is very common with the error you have provided today. Please continue to look for anything EXTERNAL to the unit before looking at the internal components. I have been working on these a long time so feel free to follow up with me.

Sylvania... | Answered on Jan 16, 2011


You need to check and see if the VS and the VA voltages are right. There should a lable on the inside panel that let you know what the VA & VS should be reading. If those are correct then you could have a bad Y-Board.

Sylvania... | Answered on Oct 18, 2010


Yes,replaced all the boards that related to the power supply.Useally completely dead,it effect all the ICS in the boards,never able to tell which boards.U are not a tv tech.don't do this everyday's will not have skills or any idea which board is dead.

Sylvania... | Answered on Apr 09, 2010


My Sylvania Plasma Tv has sound and no picture

Sylvania... | Answered on Feb 12, 2010


Hi
Please check for any broken circuit inside the circuit board and try to fix it by soldering or any fuse that requires to be mended.
Thanks for contacting fixya.com

Sylvania... | Answered on Dec 10, 2009


HD will only go down the HDMI (wide and skinny) port or component (red, blue, green) port.

Sylvania... | Answered on Dec 04, 2009


power board ic converter it dead.
Need new power board can get in the web.and replace it or hire tv. repair man part labor $575

Sylvania... | Answered on Aug 12, 2009


it sounds like one of the boards are going out I would call sylvania and check with there service dept maybe they can send a tech and part out under warranty

If you need further help, reach me via phone at https://www.6ya.com/expert/david_eb7ea98642566cc6

Sylvania... | Answered on Jul 21, 2009


try to replace all popped capacitors on the power supply board first,the tops of bad ones will be heaved up in a "bubble"

Sylvania... | Answered on Jul 19, 2009


The most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

Sylvania... | Answered on Jun 28, 2009


GO TO THE MENU ,,TRY THE COLOR CONVERSION OPTION,, OR CHANGE YOUR CONNECTION JACKS

Sylvania... | Answered on May 15, 2009


Here's where you can get the service manual:
http://www.nodevice.com/manual/Funai/page4.html

The main power board is going to be the one with the power cord attached to it. Basically, it should be the same board with the fuses on it.

Sylvania... | Answered on May 14, 2009

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