Question about Dell W5001C 50 in. Plasma HDTV

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W5001C power is on, but no image....

I knew there is problem on the this IC board LJ41-03078A, I would to what's voltage on the following ic: ZD5022, ZD5021, ZD5018 & ZD5019. Because I can't get a :Service Manual". Could someone help with this issue? Thanks!

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I was able to get the y-board LJ 41-03078 from Coretronic in Taiwan. I ordered it from charlesliu@cds.coretronic.com. The part costs 263.20 and I was able to get it within a week. The only way to pay for it was to wire the money to Taiwan. My baord has been installed and working great.

Posted on Nov 25, 2008

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When the power is on start&in a few sec\17\ gose to standby mode what part is defective


Most likely the power supply is bad. It tries to start but does not get up to voltage and then it realizes this and shuts itself down. Either that or the heat sensor is detecting an overheat condition caused either by a faulty fan if your set has one or by excessive dust build up or a bad IC chip

Sep 23, 2011 | Televison & Video

1 Answer

Can hear sound but the screen is white


The tv Tuner signal board it is the causes and the problems,that the board where the incomming broadcasting signal cable wire plug into it.Fixed this problems before,many times before the small Mosfat 6 legs IC that regulator the voltages for the main CPU chip on the board it is dead that why the tv Tuner signal board it just have a blank and white tv LCD screen panel only have no video,but it have audio sound to the tv.This Mosfat 6 legs IC are surface mounted IC is very hard and almost impossible to replaced by a regular home soldering iron equipments,even if u somehow able to buy this Mosfat IC voltages regulater.If u have some mechanical skills like take things aparts and putting it back together again?Yes,tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv Tuner signal board for the replacement.Will fixed this tv wright up.

Aug 06, 2011 | RCA L26HD31 26 in. LCD HDTV

1 Answer

The screen went black


Hi elav2,
Power on the unit in the dark room then shine with the flashlight directly inthe screen, you will barely see the images. This is because your backlight isnot functioning. The following reason is the caused.
1. Power supply - missingB+(supply voltage) coming from this board feeding the inverter board. This iscaused by faulty transistor, dried/leaky electrolytic capacitor, open fusibleresistor.
2. Inverter board - eventhe B+ is good from the power supply, if the fuse, driver transistors/IC's, high voltage transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - eveninverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I wouldadvice you to look for an experiencedtechnician to isolate theproblem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Aug 05, 2011 | Vizio 42 in. LCD TV

1 Answer

POWER LIGHT COMES ON BUT SCREEN IS BLACK AND NO SOUND


This is can be due to poor connections in case the set works on some occasions. If not the main board is a suspect. 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.

Jul 14, 2011 | Dell W5001C 50 in. Plasma HDTV

1 Answer

I have sony J21mn11. problem not power on only red lit led only.i check all the components on the power supply area and horiz. output D1878 all are good. there is power IC STR S6707 on power supply area. i...


If you have a digital tester or analog try to check the voltage reading from the power supply if high or low or no supply.Check first following voltage location and section. * Check the AC voltage from ac cord to fuse and before the bridge type diode. * Check the DC voltage after the bridge type diode.if normal voltage. * Then check the voltage into the filter capacitor to regulator ic.the power ic.If theres a input voltage in the power ic,check the output voltage going to harizontal output.If no output the problem is you power output.You need to replace it.

Jul 12, 2011 | Sony Televison & Video

2 Answers

Why are the speakers not working? The volume button works.


Hello,

First You need to check if the cable that is connecting Your device o any outer source is properly connected, once that is confirmed, then You know the problem is that the sound IC of the television is bad and need to be replaced.
To replace the sound IC, You need to get a cup, a screwdriver and a replacement sound IC, before You get a replacement sound IC, I will strongly advice You disassemble the television first to be able to tell the kind of sound IC You should buy. Follow these steps below to replace the sound IC:
  1. Turn of Your television,
  2. Disconnect it from the power outlet and allow it rest for about 6 hours, so the high voltage on it will dissipate,
  3. Then You unscrew the television open,
  4. Trace the wires that is at the back of the speakers, it will lead You straight to the sound IC,
  5. Disconnect the sound IC and get a replacement for it,
  6. Fix in the new sound IC,
  7. Reverse the steps to reassemble the television back together,
  8. Plug the television back and turn it on,
This time the sound will work perfectly fine.
Hope this helped. Thank You for using FixYa!!!

Jan 16, 2011 | Polaroid Televison & Video

1 Answer

NEC Multisync LCD1770V Model# L174F- Monitor powers on for a few seconds then goes black. You can still see a faint image in the background and the power light is still green. I checked for leaky caps on...


Check the iCs on the lcd control board which shut down the ccfl lamps? If hot put a paper sticker slightly smaller on the IC. This prevents condensation from osmosis into the IC.

Dec 19, 2010 | Televison & Video

2 Answers

Vizio 42 hdtv mo picture,no sound


Hi

Thanks for using FixYa. Please check the following—

1. Is Power board output +5V?
2. Is J1 (#19 in the right diagram)connector good?
3. Is DC-DC OK, check the voltage at J1 using a multimeter.
4. Is U4 (3.3V) working ok, U4 is an IC, you’ll need an IC tester or an oscilloscope to check this IC.

After checking this if it still doesn’t work then check P3 D-sub Input (on the D-board). See this schematic for details--




35b7251.jpg




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


Thanks

Rylee

Oct 17, 2009 | Vizio P2 42 in. HD-Ready Plasma Television

5 Answers

No picture or sound but it is on


i have a 50in plasma that just went out the other day the tv comes on but without pic and sound how can i fix it

Jan 24, 2009 | Dell W5001C 50 in. Plasma HDTV

2 Answers

Dell w5001c 50 inch HDTV Plasma


power no video, is an indication of a bad panel. It usually requires changing the power board, and the panel. this supplies all boards to receive the proper voltage to correspond with each other to make the TV work again including the LCD panel. also the revision code and firmware needs to be current, to prevent future programming failures.

Oct 23, 2008 | Dell W5001C 50 in. Plasma HDTV

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