How to Fix a Samsung SyncMaster 2493HM LCD Monitor
Posted on Mar 9, 2012 by Paul White
As some of you know I have invested into some serious desktop real estate
. I have 3 Samsung Syncmaster LCD Displays. One is a 30" and the other 2 are 24". Everything has been working great for years. Then one of my displays ( Samsung Syncmaster 2493HM ), starting to randomly go out. Then it would make some weird clicking sounds. After a while it would make a loud pop and come back on. Occasionally it would also flicker before going out. Over time it got worse. After some researching, I figured out the problem, and was able to repair it myself for about $20 in Parts.UPDATE repair didn't work, scroll do bottom of post for details
LCD Display Symptoms
- Display randomly going out
- Clicking sound coming from the speakers
- Loud Pop / Beep and it comes back for a while.
- Sometimes a hard smack on the bezel brings it back on.
- Turning it off for a while and then turning it back on will bring it back temporarily.
Cause of Samsung Syncmaster 2493HM going out
The problem has to do with the capacitors on the board that drives the backlight illumination. The capacitors used were cheap ones, that typically don't last much longer than the Manufacturers
warranty. Sometimes you can tell the capacitors have gone bad because the top of them are bubbled up. However even if they look fine they could still be bad.
These are the bad capacitors I removed and replaced from the inverter board.
Solution to repairing bad Samsung LCD display
You need to replace the capacitors on the inverter board.The complete repair guide can be found here
Scroll to the bottom of the guide for the paypal link to purchase the repair kit
Only costs $16.95 with free shipping
What is included in the repair kit?
- Qty (2) 1000uf 35v
- Qty (1) 2200uf 10v
- Qty (1) 470uf 35v
- Qty (1) 1000uf 10v
- Qty (2) 10uf 50v
- Qty (1) 2.2uf 50v
- Qty (3) 47uf 50v
- Qty (1) 22uf 50v
As long as you are comfortable with a soldering iron you can do this repair yourself.
They also have repair kits for many other LCD monitors
I honestly didn't think my repair was going to work, but it did. I was using a cheap $10 soldering iron from walmart.UPDATE 3/11/2012
Go Figure I blog about something working and now my monitor is having the same problem again. It was working perfect for a couple weeks, then just today it started back on the clicking sound with no display. Looks like I will have to order some new LCD displays.UPDATE 3/26/2012
Mysteriously the guys at www.ccl-la.com shipped me a second repair kit for my LCD monitor. ( I didn't even ask for it ). I replaced the capacitors again using the new ones in the repair kit. Fired up the monitor and everything is working perfectly again. Maybe there was a bad capacitor in the first repair kit. Only time will tell. I will update this blog in the future if my monitor starts acting up again.UPDATE 3/27/2012
Apparently the problem has nothing to do with the capacitors, as already the monitor is back to randomly going black with that annoying static clicking sound. I wish there was a fix for this, but I guess not. Time to buy a new monitor. Might be able to part out the bad one, or sell it on ebay.
LCD monitor with back panel removed
Video Driver Board on removed LCD chassis
Samsung Syncmaster 2493HM Inverter Board. The repair involves replacing all capacitors except for the really big one in the center of the board.
There are the capacitors that were included in the repair kit for my LCD Display.