Samsung 204B 20 Inch LCD Monitor Flickering (1051096369)

[fleXTheConsoleGuy]

Samsung fail... i have the same prob but the power supply replaced and it works!

[gasmati100]

Open the dislay panel and inspect the cold cathode bulb. Make sure the bulb's ends not severelly burn. If one of the bulb was broken,flickering will happen, the inverter is running fine.

[AudioSchematics]

I found some 820uF. They were a little more expensive than the rest. Replace them all. They are cheap chinese CapXon (CapxOff!!!) capacitors and most of them will eventually leak. A cap can be faulty even though it doesnt leak or get bulgy. The monitor is hot inside and with CapXon caps it is just a bad combo.

David

[rodneyj2]

Is there a web site or somewhere to go to help with this problem that I do not need a law degree from Yale to understand? My monitor starts off totally black, the little blue light slowly gets brighter and brighter until it come on but it is a fraction of it's original brilliance. I have gone to several sites but do not really comprehend the explanation of fixing it, anything anyone can suggest would be greatly appreciated.

Thanks R.

[BCENT2007]

You need to change the capacitors, I have the same monitor and My screen does not turn on at all. im going to change the capacitors this week.

[rodneyj2]

@BCENT2007

Hello my monitor is flickering but will eventually come on...so it is the capacitors where do I find those exactly? I went to best buy and they referred me back to the manufacturer (LOL). Do you know if there is a recall I bought my monitor in 2006 for about $450.00 so I am not even thinking about another one unless it is to run dual. thank you my roomate knows all about technical stuff he builds speakers and stuff if i can get pointed in the right direction i know he can fix it.

[nicobrown]

that seems to me that your refresh rate is setup wrongly.... need to know what your screen settings are first though....

[nmcarpenter]

While this may be true in other instances, this problem has nothing to do with refresh rate, otherwise we would see the problem consistently, not just during start-up. The 204B suffers from cheaply made capacitors that most likely need replacement.

[NutsandGuts]

change psu capacitors they are extremely cheap, that'll fix it!

[rodneyj2]

@NutsandGuts

Where do I find the PSU Capacitors exactly is there a specific color/part # to look for once I go inside. Is there a specific protocol to taking the monitor apart. Thank you and I will let you guys know if it works or what I had to do to repair it so that it can help others and thanks in advance!

[NutsandGuts]

@rodneyj2 What model/brand is it?

[rodneyj2]

@NutsandGuts

Samsung 204B I think I have identified the capacitors in question: The two by the Transformer on the circuit board are 820 microfarad and 25V and then there are three others that are 330 microfarad and also 25V. I want to replace the 820 M with 100 M same voltage once I see which ones are bulging and needing to be replaced does this coincide with what you would suggest? The factory capacitors are made buy a company (Chinese) Capxon and it was suggested to go Japanese...?

[NutsandGuts]

@rodneyj2 Yes the same 820uf capacitors are the ones I changed, but KEEP IN MIND that voltage doesn't matter as long as its higher than the original, but the capacitor value(820microfarads) HAS to be the same! 820uf isn't a standard value so I put 3 560uf capacitors IN PARALELL like it were just one and then I soldered it to the circuit board. Tell me if it worked for you aswell.

[NutsandGuts]

It's the backlight.

[rodneyj2]

@NutsandGuts will try that... a and let you know if it works and thanks again so I can get 3, 560 uf capacitors and solder them to the circuit board in a PARALELL formation? Just to make sure I have you correct. Am planning on working on this early Tuesday morning and will get back to you then again thanks NG.

[NutsandGuts]

@rodneyj2 Yes, I'll explain why, the two 820uf capacitors work as a single 1640uf capacitor(they are in parallel and that means they add up) however, they don't sell 820uf capacitors in electronics stores so you buy 3 x 560uf and put them in parallel so that you get 1680uf which is very close to the original, then you solder 2 wires from both parallel sides to one of the places where an 820uf capacitor used to be and that's it. hope you can get it working!