Question about Dell 1707FPv Monitor
My dell 1707fpv screen goes blank after 4 seconds,but the green light stays on.any ideas
Many thanks for your advise. have taken it to shop for repair
Posted on Oct 29, 2007
This is a typical LCD monitor problem. Here's a copy of my response to a similar issue / post.
...If the power light stays on and the unit works even if for just a moment, then chances are that you either have a cold solder, or a heat problem with some components or your CCF Lamp is starting to fail.
All possibilities require that you open your LCD monitor and perform diagnostics of the components/circuitry inside. This of course would require that you be familiar with components, circuitry, soldering and the use of a VOM.
Cold solder - refers to soldered connections that have lost 100% of their connectivity. When the unit is jarred or after some time of use it looses completely its connection. The corrective measure require that the said cold solder be located and resoldered.
Heat problems with some components - the most often are power capacitors. These are can types rated something like 470uF/16V. When power is applied and heat starts to build up, they start to looses their capacitance and therefore can no longer hold a charge. Most cases, there are physical evidences such as blistering, brownish leakage at the top or at the bottom, swelling or gaps at the X/Y indentation at the top.
CCF Lamp - may involve the backlight or the inverter that powers it. A way to verify this is to shine a flashlight on the instance the screen blinks out at the screen. A faint image of your desktop should be visible. The CCF Lamp is similar to household fluorescent lamp which of course can fail after some time of usage. The inverter is a high frequency high voltage power for the lamp.
Since there are dangerous high voltages inside, extreme care should be practiced when working on exposed components. Should you not be comfortable doing this, perhaps your best bet would be to seek the services of a qualified technician.
Hope this be of some help/idea. Pls post back how things are or should you need additional information.
Good luck and kind regards.
Posted on Oct 24, 2007
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Posted on Jan 02, 2017
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