Samsung Syncmaster 226CW LCD Monitor Repair

Fixing a monitor that was having power supply issues.

Category:

Entertainment

Tags:

• LCD
• computer
• monitor
• repair
• Samsung
• 226CW
• bad
• capacitors
• power
• supply

[27merk]

Always check the main filter cap. just because they cost 10 x as much as the ELV electrolytics doesn't mean they don't fail. Usually blown bridge diode cause by faulty main filter/storage electro.

[Maxxarcade]

@27merk I always do an ESR check on them, and in most cases they are still good. I have come across a bad one on occasion though.

[maplewoodsp]

My brother and 90-year-old father had bad power supply caps in their big screen HDTVs. Both warranty repair. One was fixed with a hand- full of caps, but the other was the lazy board replacement. Two different shops did on-site repair. Both dad and my wife have this monitor. No problems after more than 3 years of use. Go figure!!!

[Maxxarcade]

@maplewoodsp It really depends on the total hours of on-tme, and the temperature inside the monitor. It's also possible that yours happen to have a slightly better brand of caps.

[bamboopavement]

I had a problem with my 226CW in that it was getting dimmer and hard to read. Was hurting my eyes as I couldn't focus on the text very well. Searched for solutions but found only replacement cap videos. I looked at the Win XP properties for the monitor and changed the Samsung profile to default profile and it brightened right up! When I installed the monitor there was no Samsung profile on XP. Perhaps an XP update installed the profile on me?

[Maxxarcade]

@bamboopavement I had a similar issue on my system too. My LG monitor had a custom profile that made everything look like crap. The default Windows profile is much better.

I've noticed that most Samsung monitors I've seen have tended to be on the pink side. On the older ones, the backlight lamps cause some of the pinkness when they start to go bad. Other times, the monitor is just configured wrong from the factory!

[Maxxarcade]

@Dicofole You can usually go up a bit in capacitance, as long as the physical size will fit.

[Maxxarcade]

@SensiRootsBoy The parts cost around $10 or so, and the labor would vary depending on who works on it. It took me a little under an hour, but I have decent soldering/desoldering equipment to speed things up.

[MRMitek100]

show how to take the cower off!!!

[madisonelectronic]

@27merk I had a 200v 470uf partially fail and sent a signal through the audio as well as mess the screen. Nichicon too. As soon as I had it assembled and back on top of the fridge (27") the vertical IC failed. blankety blank blank blank!

[C01DB100D]

I have this exact issue with my 226CW. My monitor is to a point now where it won't turn on at all. It started with the monitor screeching while it was plugged in but not turned on. It moved on to strobing for a few minutes after I turned it on. Finally it went on to continuously restarting itself over and over and then strobing before it would stay on. Now it is dead. I'm going to buy a new monitor, but I still want to give this a try. Do you think you could provide a link to the capacitors?