Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

[Downward_Spiral]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

picture 268 shows a cap that had very close-together, long leads that branch out about half a cap's height at the bottom. I thought that was weird as well because it wasn't like that in the catalog. I figured since it has the same specs that I'd just give it a shot anyways. I am confident it's installed correctly, though. The joint you pointed out was factory; I'll take a better look at it. Thanks!

[selldoor]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

Hi - I am not sure which are the first four pictures but in pic 268 the leg of the cap looks broken? but it looks ok (if a bit leggy) in a later pic?
I attach a pic can you check the joint marked - doesnt look great.
As retired caps says straight on pics of top and bottom of the board would help also check soldering and polarity of caps.
New Lelon caps should be ok for now but if you get it up and running then consider replacement so you dont have it all to do again in a month or so. Suggest you read retiredcaps guide on 2 seconds to black start at post 19.
Do you have any spare ccfls or an old panel or even a new one you could use to test the bulbs.
https://www.badcaps.net/forum/showthread.php?t=10419

[retiredcaps]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

I'm not sure what that means.

+1 means that I agree with Mr Bill's comment about the quality of Lelon caps.

[Downward_Spiral]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

I found you guys a couple hours too late. I will remember that in the future. I just noticed that picture is still blurry. I'll take some better ones after work.

If i'm looking at the lelon datasheet right the SG series would be considered a general purpose cap because its not showing a maximum impedance table. The ripple rurrent is lower on the lelon SG cap than the original capxon GL cap.

Do you think I should replace just the SG or all of the Lelon? Thanks

1) +1 re the Lelon.

I'm not sure what that means.

[retiredcaps]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

My method of selecting caps was just getting ones in the mid price point that were low ESR and high temp.

The difference in price between crap (Lelon) and the best caps in the world might be 25 cents each.

[Downward_Spiral]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

My method of selecting caps was just getting ones in the mid price point that were low ESR and high temp. I didn't know Lelon were no good until too late. I'll post more information tomorrow. I just noticed the reply before bed. Thanks for all your help. I hope this picture is better. I was having a hard time getting the right lighting for this.

[retiredcaps]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

It's a shame you bought lelon caps along with panasonic FR series.

1) +1 re the Lelon.

2) Check your soldering.

3) Post clear focused top down pictures of all your boards following my sig file below exactly. We want the picture compositions like so

https://www.badcaps.net/forum/showpo...94&postcount=1

[Mr Bill]

Re: Samsung 216BW SyncMaster Monitor. Cap replacement didn't fix

It's a shame you bought lelon caps along with panasonic FR series. Was there no stock at mouser to get panasonic fm, fc, or fr for the 22uf & 47uf caps? Will you post exactly the make and series caps you bought. From your photos it looks like all the caps that were in the board originally were capxon GL series. I can see one lelon cap that is a SG series. If i'm looking at the lelon datasheet right the SG series would be considered a general purpose cap because its not showing a maximum impedance table. The ripple rurrent is lower on the lelon SG cap than the original capxon GL cap.

[Downward_Spiral]

This computer monitor would turn on (very dim a loud buzzing), then go black after a couple of seconds. It had to be power cycled several times until it would finally stay illuminated. The blue power light would stay lit when the monitor would go black.

I went ahead and replaced all of the main capacitors and it still doesn't work. However, the problem seems to be different than before because now it turns on for about 30 seconds, then completely shuts off and won't turn back on until I remove power, disassemble, then reassemble it. The picture looks great for the time that it's lit up. I'm at a loss now. I'm fairly certain I used compatible replacements, but I've included the package labels for anyone to help me out and verify.

The first 4 pictures are from before the replacement. (One of the caps is just loosely positioned in place which is why it's off center). The rest of the pictures are from after the replacement. Maybe you can see something wrong that I can't. Thanks for any comments and suggestions you may have.