Question about Philips 190B6CB/27 19" LCD

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Lcd monitor but where its exactly located? the capacitor? and which one?

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You can easyly see it look all the capacitor when you see an (expanded capacitor) replace it

Posted on Nov 03, 2008

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Why is desktop green like theres way to much yellow hue


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

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The monitor has faulty capacitors. Capacitors have a job to hold power long enough for your display. Faulty capacitors will only hold power for at least 2 to 8 seconds and a dead one will actually not hold power at all. The only solution is to replace the faulty capacitors. Get a computer technician to open up the monitor for you and locate the faulty, leaking, or bulged capacitors located on the circuit board where you connect the power supply. Note the polarity of the capacitors as you replace them.. (+) and (-)

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I have a proview lcd monitor model pl866s .What is the size of the power connector for the 19vdc @3068a psu?I have an extra psu with the correct voltage /current .Thanks Robert.


For the above LCD Monitor, I actually saw a small spark at the top part of the main board once the power input jack was connected. It prompted me to the exact location and when I check the SMD ceramic capacitor (that generated the spark underneath it) with analog meter set to X 10 K ohm range; it actually developed a slight short circuit. Replacing only the fuse and the SMD ceramic capacitor solved the no power problem in this 19" LCD Monitor. This Monitor uses the inverter IC (OZ960G), A1084-25CM (2.5 volts voltage regulator), AMC1117-3.3 (3.3 volts voltage regulator), ADC IC (MST8136B) and CPU IC (MYSON MTV312MV64).

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I have a gateway FPD1975W tft lcd Monitor. It will not power on at all. I took the power cord from an exact same working monitor and put it in this one and it still will not power on?


Faulty power PCboard. Reasons and the exact problem may vary. Main components to check: The fuses, the stabilizing capacitors on the low voltage, the impulse transistor, the optron and the pulse width modulator (PWM) IC.

Jun 15, 2010 | Gateway FPD1975W 19" LCD Monitor

1 Answer

Same thing.


Hello,

If you have the 2 blown capacitors on the power board then most likely yo also have blown MOSFETs and a blown fuse. The MOSFETS and fuse blow when the capacitors short out when they blow. We sell a kit with the capacitors, MOSFETs and fuse with instructions for $10.00 plus shipping. Let me know if you need a repair kit.

Buddy
Corporate Computer
www.ccl-la.com

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X2GEN CAPACITOR LOCATION


I had the same problem with my 22" X2Gen, first the monitor started what looked like a random color temperature shift, ie the screen would switch between a yellowish and blueish tint, then it wouldn't turn on and the amber standy by light flashed on and off. I took it apart and replaced the 2 220uF25V capicators with 2 220uF35V caps I got at radio shack, part number 272-1029. Don't worry about the voltage mismatch I'm pretty sure it doesn't matter, the voltage is the maximum the cap can withstand and has nothing to do with the voltage in the circuit. The caps are located on the board that the AC cord plugs directly into, it has a plastic (almost feels like paper) sheild, the caps are marked C812 and C813 on the circuit board. There was no 47uF35V cap that I could find, anyway replacing the two did the trick, all for under $3, I almost went out and bought a new monitor ;) Hope that helps.

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1 Answer

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Hello,

Aside from the capacitor and IC, there's a relay that you need to change. You need to locate that defective relay on the PCB and replace it.

It would be best to consult the manufacturer of the LCD and get the exact part number of it.

Have a great day!

Regards,

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I replaced the 470uf 25v capicitors and this fixed the problem. I had 2 monitors exactly same with the same problem and it fixed both of them.

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The capacitors that I replaced were near the large heat sink on the power board. They were radial capacitors. Looking at them I noticed that the metal end of the capacitor was dome shaped and not flat. I figured what do I have to loose and replaced them. The voltage and size of the capacitor is usually identified on the side.
Hope this helps.

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3 Answers

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Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

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