El Duderino in a post concerning LCD issues stated that the CCFLs and Inverters are "replaceable". Is there a supplier I may order these from or does he mean I must take it in to a repair facility to have them replaced?
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Re: Procurement of CCFLs and Inverters for LCDs
You can buy the CCFL from Moniserv.com.(All sizes). Bulbs are cheap but replacement is tricky on some models.. Inverters generally fail due to heat in the small coil wound or Piezo electric Transformer failing. If you can find the correct parts these are repairable as well.. Good luck! www.ikenfixit.com
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It sounds that the back-light CCFL lamp is faulty. It is time to replace it. When replacing, do it to all CCFLs, because, the life time to these lams are expiring now, as the set is nearly 4 years old. Check this link http://electronicshelponline.blogspot.com/ to get more details about how to replace the CCFLs. Pull up older posts there. Some among it have details.
-ALL lcd tvs, except for latest units with LED backlighting ,use from two to six or more CCFL lamps-any of which can fail-causing darker bands on sceen since failed CCFL CANNOT illuminate screen area -IF none of CCFLs illuminate OR if reddish tinge on startup,one or more ccfls are failing-OR INVERTOR section failing-where INVERTOR board gets juice from power supply and ups voltage to >1500 v AC -just like flourescent tube-but ccfls "might" be integrated into lcd panel itself-to make "slimmer" -either problem is EXPENSIVE FIX-so newer LED backlit units better since leds are more reliable,last longer AND reduce power consumed
your T.V. is LCD then you may have a burned out bulb, this is a very
common problem with LCDs. The screen remains black because the high
voltage inverters for the cold cathode florescent lights turn off if a
bulb is bad to prevent a spark or arch of electricity causing a fire.
You can find more answers or even replacements/servicing through your
manufactures website as this is a common issue.
You can also check the inverter board and check for bulged capacitors to see if there is a bad one that needs replacement. if you find one you can easily replace it by ordering one offline or goign to an electronics supply store. be sure to match up voltages and uF numbers.
Have u tried replacing or trying a different power supply? Sometimes when a power supply is going bad will not put out the right voltage for the internal switch to kick up the brighter setting. Therefore it still thinks its on battery mode. Test the voltage from the supply and compare it to the recommended voltage gateway suggest for that laptop.
Its back light in LCD Panel problem, there are approx 20 CCFLs in 40" lcd panel and one or two in upper half is not providing enough light to give proper brightness so you see bit darker image.
As per Sony policy, lcd panel will be replaced to fix this issue and local tech can fix it on component level (replacing bad ccfl) if he/she agrees because its risky work.
Hope this nfo will help you.
You are getting the issue on a cold start which means the LCD Panel is bad. It is usually the inverters that cause the issue. They are what light up the panel. This problem was present in many of Sony's LCDs released around the same time as yours.
You can check the voltages to see if the inverter boards are functioning correctly. If Inverters should be replaced. Part numbers: Inverter Left: 1-789-839-11 Inverter Right: 1-789-840-11
If the voltages are fine or the Inverters did not fix the issue, you need to replace the whole LCD panel which is very expensive. The part number depends on the serial number of your TV.
1-802-491-12 for S/N 8,000,001 TO 8,199,199 AND 8,500,001 TO 8,599,999S/N
1-802-491-31 for 8,200,001 TO 8,499,999 AND 8,600,001 AND UP
The inverters list for $93.11 each while the LCD Panel lists for $1400 with a $3100 core charge.
Your backlight is gone. LCDs usually use CCFL (Cold cathode Fluorescent
Lamp) for backlight, maybe it's your CCFL power inverter (power supply
for the CCFLs) or the CCFLs themself.. You probably won't be able to
fix that for yourself :(
you need to replace a LCD,then it will be working again.you can contact firstname.lastname@example.org to get original new tomtom gps LCDs,garmin nuvi GPS LCDs,PDA LCDs,mobile phone LCDs,notebook LCDs,game device LCDs,Car DVD LCDs,industrial LCDs.
Sound like you have a back-light issue with the LCD. Not sure what kind of technology they use to back-light the LCD, but on all LCD monitors and TV's they use CCFL. Cold Cathode Fluorescent Lamps can burn out or can get damaged. Not sure if the DVD player uses them or not, you just need to open the back panel of the LCD and see what they use. Also CCFLs need an Inverter circuit to convert the DC current to AC current. If it uses CCFLs than it can only be 2 things the Lamps or the Inverter circuit. Check the lamps, if they look dark at the ends, than most likely a bad lamp. If the lamps look fine, than you will need a volt meter to check the status of the inverter.