Question about Planar PL170M 17 in. Flat Panel LCD Monitor
If you are certain that it is not a simple problem like your screen brightness being turned down too low, then this is usually an indication of a hardware fault on one of the circuit boards inside your monitor.
I am assuming that the screen is dark and unlit while the power is on, rather than lit up but without a picture signal. Please confirm if that is the case.
In most cases (well over half the time) this symptom is caused by some bad capacitors on the power supply circuit board which results in the backlights not receiving adequate power to light up.
It could also be a bad surface mounted fuse on the inverter circuit board, but that is slighly less common.
Either way, the problem is interfering with the correct operation of the backlights in your LCD monitor resulting in the dark screen.
If you are handy with a screwdriver and a soldering iron, you may be able to disassemble the unit and check the various circuit boards for bad components. The main thing you would be looking for is any scorch marks or burned components. When electrolytic capacitors fail, they usually expand slightly and bulge out their normally flat tops or leak out brown gunk. There should be a bunch of these types of capacitors on the power supply board and you would want to give them a very close inspection for damage while you are in there.
However, I am completely unaware as to your ability or desire to carry out any kind of electronic troubleshooting yourself. There are some obvious electrical safety precautions to take into consideration, and even when the unit is unplugged, there are still some components inside like the large capacitors which can remain significantly dangerous.
I wil include a link to another expert's solution to a silmilar problem which includes links to his excellent LCD Troubleshooting Guides. You can read through those if you like, to give you some idea of the troubleshooting and repair process. Please give BUDMRTN a thumbs up rating on that page if you find his information helpful.
Please comment back here to this page with any questions or additional details you can provide for me and I will respond as soon as I see it.
Thank you and good luck.
Posted on Apr 01, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 04, 2017 | Sanyo Televison & Video
Jan 05, 2016 | Planar PL1700 17" Flat Panel LCD Monitor
Jul 30, 2010 | Planar PL1700 17" Flat Panel LCD Monitor
May 20, 2010 | Planar PL1910M (Black) 19 in. Flat Panel...
Apr 21, 2010 | EMC LCD Display mw Monitor
Dec 15, 2009 | Planar Computers & Internet
Apr 01, 2009 | Planar PE191M 19" Flat Panel LCD Monitor
Mar 27, 2009 | LG Flatron L1951S-SN 19" LCD Flat Panel...
Nov 19, 2008 | Planar CT1904Z 19" Flat Panel LCD Monitor
49 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: