20 Most Recent Sylvania 6842PE 42 in. HD-Ready Plasma Television - Page 3 Questions & Answers

if your storing this set ideally in the original box would be a good start never on a concrete floor from my experience and try these temp guidlines -4oF to 113oF (-20oC to 45oC) when you remove this from storage allow it to reach room temp before using it 12 hrs should do it hope this helps

I had the same problem. My nephew gave me this set after it quit working at the Gym where his wife was working. They were going to junk it but I asked if I could try and fix it.
The capacitor C2250 was definately blown and easy to spot so I did some searching and found a replacement from an online electronics supplier that didn't require me to buy 200+ as Digitech wanted. Anyway I replaced the Cap and it still didn't work so I started looking and testing components again and found that the Diode D2250 was bad so replaced it as well and now the set works fine. Maybe this is what is wrong with your's and others as well.
It made sense for me to check the diode as it is right next to the cap that blew. https://www.mouser.com for the Cap and http://www.slelectronics.net/ for the Diode.
The specs for the Cap/ CERAMIC CAP. B K 1500pF/1KV
The specs for the Diode/ SCHOTTKY BARRIER DIODE YG123S15


Hope this helps

Hi,
The power board has a fault or it is sensing a fault from another circuit and shutting down. If you have an electronics background and some test equipment I can walk you through what to test. Or you can take it to your local TV service center.
http://tvtechwork.webs.com/

I have the same exact TV and the same exact problem it seems pretty popular, but there also seem to be different answers to similar questions. Some sort of problem with the Power Supply Unit. Maybe a blown fuse or bad capacitor, thats what i am about to check for, ill be coming back here in hope of finding a solution.

This TV doesn't have a tuner and thus no RF (coax) input. It should be connected to a set top box by component, composite or S-video cables. Component video (with three RCA video plugs on each end) will provide the best signal (a separate cable with two plugs on each end carries the audio).

I wish that I could be of more help.

Cindy Wells

did you have a surge protector? if not then you probably burned out a resistor, what its doing is performing a system check while its blinking then finding a fault and shutting down as to not cause a fire

Try the S-video port. works for me! and MOST laptops already have the s-video port in them.

*To Manually program the AT&T universal remote control to your
TV here are the steps

Factory Reset the AT&T Remote Control:
* Press the ATT button and the OK button at the same time for 2-3 sec. release them at the same time. The ATT button will blink twice then enter the code 922. The ATT button will blink Thrice. IF not repeat the step
* Press the ATT button then check all the function of the remote (Volume, Channel, Menu, Guide)
Note: you will see that the max volume is 25. Dont worry its the volume of the receiver
To Program Your TV:
* Press the TV button and the OK button at the same time for 2-3 sec. release them at the same time. The TV button will blink twice then enter the code. Click Here to see the manucafturers list of codes. After Entering the code TV button will blink thrice. IF not repeat the step
Note: After you program the tv make sure to press the ATT button. then now check all the function of the remote. Follow the instruction and it will work. If you press the power button the TV and ATT Recievier will turn on and off at the same time

Thanks for using Fixya.

Hello,
You can fix this by opening the back cover of the television and check for dry soldering, if found resolder, but if otherwise check for bulged capacitors , if found replace with same rating of voltage, but if otherwise Power supply board have problems,just not dead yet.Replaced the power supply board,will solved this problems.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Hope this helpout.......

Power board is likely shorted out. It has capacitors on it that can short out, overheat, burn out, ect. An analog tester will need to be used to test the caps to see if they are faulty. Another sign is swelled up caps or burn marks on the power board. The power board is the little circuit board that the power cord is attached to.

its the problem of overheating in the power supply board of the TV.on the power supply board of the tv there are few capacitors and IC.any of this ic is got short or may be weak.so due to this when you start the TV the current passes from electric outlet to the power supply board of TV.but when the current passes from that weak/faulty part at that time current gets stopped or slow and the board overheats and TV shuts off. this is a common problem faced by many other users too.the possible option to solve this issue is to check the power supply board by a meter and continuity tester and replace the faulty component on the board which is short due to which power supply board is getting overheated.its bit technical job but yes its not at all a costly repair to do or get it done by the technician. for required parts it can be easily available from local electronic hardware shop.] This will help. Thanks please keep updated.please please do rate the solution positively .thank you for using fixya

Have you Looked on boards to see if any of the capacitors are swollen or vented up on top? If you see any that look like that they are Bad.
Most commom problem is C2250 and this TV was Made by Funai so this may help you with finding Parts. Google to this website Encompass Parts Distrubtion see what they have Listed for Parts and if they offer free service manual for this TV if they have it you can print it out free.

Hi


Thanks for using FixYa. You’ll need to check the. X and Y sustain buffer boards. When either of these boards goes bad common problems include negative image, no image, vertical or horizontal stripes on picture, turns on and than turns off, and many more. You’ll need to open the back off the TV and check for any swollen/bulged/leaky capacitors on these boards and replace whichever has gone bad. If still the issue is not resolved, then please check the power supply board. All this is only recommended if you have electrical expertise & know how to solder/re-solder components as these units contain high voltages even when switched off.

Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

It sounds like you do have a faulty new lower buffer. Was it bought new, or was it bought as used?
The symptoms of a faulty buffer or broken screen ribbon are horizontal black bars. Check the ICs on the buffer for brown staining around their pins under the glue. Also check for pinholes on the tops of the Ics from internal thermal damage. When the buffer is in and tv switched on, carefully check the temperature of the lower buffer Ics using your finger tip. If the Ics in the lower buffer seem hotter than the top buffer, then the buffer is either faulty, or the screen is drawing too much curent from the buffers and is faulty.Make sure that the replacement buffer has identical numbers on it as the old buffer pcb.

Hi,
Need a little more info..Do you have cable or sat? And do you have an HD hookup? If so is there any improvement in HD vs standard def? Does it look bad on other inputs like your DVD player? If you hit the menu button for TV does the menu look bad too?

Do you see any colored dots (pixels) firing randomly through pix?

Ur LCD inverter board it dead.Replaced this board to get picture back.It usally a long board. Tries Shopjimmy.com,Ebay.com to buy this board part.

Try to format it first and scan for virus. Secondly, see if the windows you are running is compatible with your mp3

Try website 1-800-Remotes Factory Original to buy an original remote.