Re: Problems with Samsung 740N monitors

Thanks, I should have looked at CN2 more closely.
Interesting, I only have 1 cap that is on the +13 trace while 3 caps were on the +5 trace, yet I have 2 caps at 25VDC. They must have used a 25VDC cap on the 5VDC trace.

Re: Problems with Samsung 740N monitors

I pulled a bone-head move!
I have 2 x 940b 19" LCD monitors with badcaps in both. I'm experienced with electronics and replacing caps but I pulled a stupid.
My power board is the exact same as the one pictured in post #4 of this thread.
PN: BN44-00128A, I have seen it called Rev2.
I identified the caps needed or so I thought, 470uf at 25vdc times 5....
oops, they are not all 470uf there were 2 x 1000uf 10VDC that were identical in size as the 470uf ones however I removed the caps so where did the 2 x...

Re: Problems with Samsung 740N monitors

I think I will close the patient up until I get the correct parts...
I just want so say a very loud thanks to Bill and the site owners. It has most likely saved me a few bucks.

Re: Problems with Samsung 740N monitors

I'm pretty sure all the CAPS are the low ESR type but I will have to verify. I have replaced lots of CAPS on motherboards and I usually have to order the correctones from DigiKey but this is a Power Supply and my first one. I live in Canada and Digikey has a 200.00$ minimum to get free shipping and I'm pretty sure it is 8.00US for shipping. Maybe I will just look at moving foreward my Digikey order of waiting for the monitor repair. How do I verify if a CAP is low ESR?

Thanks

Re: Problems with Samsung 740N monitors

Thanks Bill.
It is just that I have new, 2 - 1000uf 35v caps and 1 - 470uf 35 which are physically compatible with the 820 caps that were in there. Getting the exact 820 caps would require a special order from Digikey and I would rather avoid that if I can. What I was thinking is put the proper caps on the list and order them with my next big order. I could use other values as a temporary fix.
Also I should get away with replacing the little fuse green (if its blown) with a glass one?
This thread has been fantastic,...

Re: Problems with Samsung 740N monitors

Can I replace the 820uf caps with all 1000uf caps or do I have to try and get as close to the 2460 total these caps are producing?

Thanks