Samsung Syncmaster 225BW

[jlk69]

Re: Samsung Syncmaster 225BW

OK did the test. Check out the files attached. Rar files have video files in them. When I first put probe on yellow contacts my readings were 1.7.X.X then started dropping slowly but then stabilized at around 1.3.x.x. The same happened with red contacts but readings started at 1.6.xx then dropped and stabilized around 1.2.8.0. Further readings looked like what you see in the videos (1.3.xx then dropping a little then stabilizing).

[selldoor]

Re: Samsung Syncmaster 225BW

Power off - do this test
https://www.badcaps.net/forum/showpo...&postcount=128

[jlk69]

Re: Samsung Syncmaster 225BW

These were low ESR caps I think Panasonic. It has been so long ago that I can't remember exactly. I got the list off of this forum based on what others had used who had the same original caps as mine. Monitor worked great for a long time after the caps were replaced. Edit: see attached files for type of caps ordered and date. Inverter fuse checked out OK.

[budm]

Re: Samsung Syncmaster 225BW

What kind of caps did you use for the replacement, general purpose or low ESR type? Bad cap can look normal but can have high ESR or low capacitance. Did you check the inverter fuse? You can have bad transformers, bad lamps, failed inverter circuits, etc.

http://s807.photobucket.com/albums/y...%20capacitors/

http://s807.photobucket.com/albums/y...msung%20225BW/

http://s807.photobucket.com/albums/y...klight%20lamp/

If everything else check out OK on the board, then you will need to make a couple test lamps.
http://s807.photobucket.com/albums/y...g%20old%20CFL/

[jlk69]

Re: Samsung Syncmaster 225BW

Just a quick note. Did not replace small cap 47 50v or large cap but both still show no sign of bulging or leaking.

[jlk69]

Re: Samsung Syncmaster 225BW

Hi, I have 225bw with a rev0.1 pcb that I replaced caps a while back. Now when I turn on the monitor I see an image for a sec or two then black. Blue light stays on and with a bright light I can see an image on the screen. I just read this whole thread but need help with identifying components to test as per retiredcaps guide. I have a Sperry DM-5300 Multimeter. I am very inexperienced in trouble shooting electrical issues. Thank you for all your help.

[selldoor]

Re: Samsung Syncmaster 225BW

Well there is losts of info on here to help you fix it.
You have a few if not lots of bad caps.
please post good clear pictures of the whole chassis, and then pictures of each board, front and back (in the same orientation) and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed
https://www.badcaps.net/forum/attachm...1&d=1290283049

https://www.badcaps.net/forum/attachm...7&d=1280167246

It will be useful if you can say what the supposed fault was and a bit about yourself - skills tools etc.

[S0und]

Re: Samsung Syncmaster 225BW

http://imgur.com/a/U0VlJ

Looks like mine dying as well, it takes like 10 sec to turn on.

I'm planing to get these:

3x 330 = http://www.digikey.com/product-detai...613747?cur=USD
2x 820 = http://www.digikey.com/product-detai...613752?cur=USD
1x 47 = http://www.digikey.com/product-detai...266330?cur=USD

honestly this is a mess, bw225 has like 2 revision, and everyone is using different Panasonic! caps. Looking through the thread, saw like 4 different 330uf caps. Kinda confusing.

[zwoeger]

Re: Samsung Syncmaster 225BW

Is 1.0mm diameter solder too thick for this job?

It can be done with that.

[jptbadcaps]

Re: Samsung Syncmaster 225BW

Is 1.0mm diameter solder too thick for this job?

[zwoeger]

Re: Samsung Syncmaster 225BW

Thanks, but what we are doing with these button presses? Resetting something?

I think this way the EEPROM will be reset.

[tibimakai]

Re: Samsung Syncmaster 225BW

Thanks, but what we are doing with these button presses? Resetting something?

[zwoeger]

Re: Samsung Syncmaster 225BW

Somewhere in this topic is the answer I used.

1. Press "down arrow" key.
2. Hold down the "enter" key for 10 seconds.
3. Turn off and back on. The redness disappears.

Hope it helps you too.

[tibimakai]

Re: Samsung Syncmaster 225BW

I sold one of these monitors and the person called about it, but he said that will try something with it. I just want to know if I need to repair it again, what would take to repair it. Thank you.

[selldoor]

Re: Samsung Syncmaster 225BW

Why would sometimes show the screen in red tint?

Pink tint suggests lamps are failing.
If connected using vga cable try a different one - check for bent pins.
clean both ends

[tibimakai]

Re: Samsung Syncmaster 225BW

Why would sometimes show the screen in red tint?

[Dougmeister]

Re: Samsung Syncmaster 225BW

Turns out one of the pink wires was coming loose when I put it back together. Seems to be working now. Thanks for all the info, everybody.

[selldoor]

Re: Samsung Syncmaster 225BW

Ok there is more than one board used in this monitor - If you post the board part numbers it will help or better still when you have it aprt take and post pictures:
Welcome to the forum-
We can help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed
https://www.badcaps.net/forum/attach...1&d=1290283049

https://www.badcaps.net/forum/attach...7&d=1280167246

It will be useful if you can say bit about yourself - skills tools etc.

[Dougmeister]

Re: Samsung Syncmaster 225BW

I replaced (3) 330 uF and (2) 880 uF caps. I connected it while it was "taken apart" and it worked.

But when I put it back together, the same problems occurred ("analog" for a second, then black).

I took it apart, checked the connections, plugged it in again (while "apart"), and it worked. Put it back together again... didn't work.

What can I be missing?

Thanks.

Edit: I should note that I did *not* replace the 47 uF capacitor, nor could I even *find* the 680 uF caps?

[jptbadcaps]

Re: Samsung Syncmaster 225BW

47uF 63VDC is fine.
Your board looks like this?
http://s807.photobucket.com/albums/y...msung%20225BW/

Similar. Board in my 225BW is Rev0.2