Re: Twin Samsung 931b monitors

Thanks for the advice PlainBill... I'll give those a shot. A playing card should do the trick.

I messed up on reporting the sizes. Not that it's a big deal, but I'll post the correction below for anyone else working on this same project.

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The 820 microfarad 25V P11221-ND EEU-FC1E821 cap is 0.394" Dia x 0.984" H (10.00mm x 25.00mm).

Which is about .25" too tall. The next size down would be 0.492" Dia x 0.787" H. The height would probably be perfect,...

Re: Twin Samsung 931b monitors

Hit a snag with my re-capping project. The two biggest caps, the 880uf 25v replacement caps are too large. The replacement size is 0.492" Dia x 0.787" H (12.50mm x 20.00mm).

Diameter is perfect, but it is about .25" too tall. So when I put the board back in the case, the caps butt right up against the metal panel. It looks like it's still possible to screw the board down, but I'm wondering if the contact will cause problems. I can't find the proper size on Digi-Key. The caps that are shorter are wider also, and the way...

Re: Twin Samsung 931b monitors

Here is the photo for monitor #2. Looks like the same 3 are bulging. That should make replacing them easy. I wonder, should I replace all the caps while I'm at it, or just the 3 that appear to be bad?

Next I'm on to ordering the parts. Thanks PlainBill... looks like the parts for both monitors I'm looking for are.

4@ P11221-ND CAP 820UF 25V ELECT FC RADIAL
2@ P12389-ND CAP 470UF 25V ELECT FM RADIAL...

Re: Twin Samsung 931b monitors

Ok, attached is the board for monitor #1. As far as I can tell, there are 3 caps with a rubbery substance that I'm assuming is leakage. Two others look like they could use replacing. The rest of the photos are the board from different angles. Any thoughts?...

Re: Twin Samsung 931b monitors

How would you discharge large capacitors?

I've had these 2 samsung monitors for about 3 or 4 years now. They started having this flickering problem about 18 months into owning them where when I power them up, they would flicker on and off. After powering on and off many times they would finally boot up and stabilize. It's gotten progressively worse until now it takes about an hour for me to power up my monitors. I started researching and found it's a quite common problem and I might be able to fix the problem by replacing the capacitors.

Unfortunately I started the project before finding this very helpful forum. I removed...