20 Most Recent Sylvania LC420SS8 LCD TV - Page 3 Questions & Answers

Check the remote control for any repair. Get into this site for details. It will have all the details about how to repair and clean a remote control in detail. "Electro-help" is the site name. Type it in either Google or Yahoo search box and click seatch.Never forget to type in 'hyphen' in between words, as site's name will be the same as above.

The flashing indicates something is wrong (missing or bad) the fact you get the display means panel (main screen unit) is good.This suggests to be (instinct) the main board that processes all signal from all inputs is bad; it could be a missing voltage in the power supply but a check with a voltmeter would answer that.The problem here is you can check a few things and then you are in a position where you have to gamble and buy and try a board.It can get expensive to fix it this way---gone are the days of looking for one bad part (they only sell boards) and with that the lifespan of these (all brands Plasma and LCD etc) are 3 to 5 years.

Likely it is damage on the power supply and/or standby power supply.

Good day!!!That problem is usually cause of bulged capacitors on the power supply board..This the sample picture of your power supply board and I marked the possible problems on capacitors..Things you will need.1. A plastic flat end screw or any object with flat ends....to fry off the cover2. Soldering iron.3. Soldering lead4. Soldering pump.5. Flat and Philip Screw6. Replacement capacitors (of same value with the blown one) that you can buy to any electronics store.Hope it helps..

I'm sorry that the TV is not turning ON. Please follow the troubleshooting steps and check the operation.

• Please make sure that the connections are secure and proper.
• Please connect the TV to a different wall outlet and check the operation.
• Unplug the TV from wall outlet and connect after 3 minutes.

Please let me know the result after performing the above steps.

try
operatingguides.com
or
servicemanuals.co.uk

It is in safety shutdown which can be due to bad power supply (bad caps, blown components), or it is detecting shorted circuits so it goes into shutdown mode. It will require in-depth troubleshooting.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on: Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Parts: http://interliquidparts.com/ Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps. Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Where you plug in the speakers depends on many things like where is the source of the sound coming from? Is it a cable box? Do you want just the sound from the tv itself to come to your speakers? If you want the sound of the cable then you need to connect them to the out going leads on the back of the cable box.

The tv probably has a small button some where on the back to use external speakers. If your running the cable signal into the tv, turn on the external speaker option and then use the out going leads to send the signal to your speakers. There may also be a signal input/output choice in your tv settings. click on the different choices of in put to see if you hear through the speakers to figure out which one is for them. The choices are usually listed as AUX, Antenna 1, Antenna 2, ect.

Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.

• No video, Power light is on or blinking.
• TV is making a clicking noise.
• TV takes a while to come on
• Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



Capacitor being replaced! Fairly easy DIY fix.


Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Tries tv unplug,replug it back like about an hour later for the tv to do a resetting itself,tv now should be working again.If not,tv have the same result.Than the tv power supply board it is dying or already dead.The tv power LED light indication on the tv bazel frame just blinks and repeat?Yes.The tv power supply board it is the problems.That the board where the tv power a/c cord plug into it.U have all the tools and know basic electronic also can do soldering work too?Yes,take the tv aparts.Check the tv power supply board carefully and searches for dying components parts call capacitors.Replaced all the dying capcitors components parts are bulging up or pufffing up.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Good day.

This the procedure that you have to do.

1. Remove the cover of your TV.
2. Power on the TV to apply voltage data.
   
3. Check the power supply output.5vdc for main board supply,12v for the sounds and 24vdc for back-light inverter.
   
4. If any of the 3 supplies are missing or got a voltage drop,there's a problem with your power supply.Check some leak/bulging top capacitor.
5. If the 3 supplies are OK,the problem is on the main board of your TV.Replace it.

I hope this solution will be helpful.Thank you for using FixYa.Good luck.

You must suspect the inverter p/s as you never have the proper 24v at all. How are all the other voltages? 5v? 12v?



Let me know.

Thank you

immediately check your AV leads and stb on other tv

I'd say take it for a repair... its not going to help here.

This seems to be it, hope this helps
http://www.manualnguide.com/download/manual-guide/sylvania-lc420ss8-owners-manual.html
:)