Re: Samsung 2693HM - the common "2 seconds to dark" problem
Inverter board arrived the other day, so I slapped it in...success! The upshot is that my power supply now has a full set of brand new Nichicon caps, too. The monitor works great.
Most likely won't go ahead with the Chip Quik and try to fix the old inverter board. Too many other things on my plate. Thanks again for all of the help - my computer thanks you, as do I!
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Samsung 2693HM - the common "2 seconds to dark" problem
PlainBill guessed right: we have a current issue at the fuses (see below)
I've never played with a PCB like this one before. With no pins thru the board, all solder connections seem to terminate on the surface and the board seems heat sensitive to hot solder (it bubbles). Is there anything I should know before digging in further?...
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Re: Samsung 2693HM - the common "2 seconds to dark" problem
Woops - forgot about that policy. Fixed.
Haven't checked anything on the inverter board beyond what I mentioned. Was planning on looking further today. I will assume that the below items are the fuses you are referring to?...
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Re: Samsung 2693HM - the common "2 seconds to dark" problem
Finally got around to playing with this monitor last night. Th power board was full of Sam Young caps, so I went ahead and replaced them all with Nichicons, without testing. I figure it's insurance if not th eproblem...which it wasn't.
Fired the monitor back up and the same symptoms persisted. I started testing the inverter board, unplugging all leads to the CCFLs, then plugging them in one at a time.
Turns out the bank of three on the left happily fired up the CCFL for the usual...Last edited by kenikh; 09-08-2011, 10:40 AM.
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Re: Samsung 2693HM - the common "2 seconds to dark" problem
I decided to execute a little practice on something more disposable before trying this monitor. My success is directly attributable to you guys giving me the confidence to try this out:
[url]https://www.badcaps.net/forum/showthread.php?t=15949[/url]
Thanks!
I'll be crackin on this one soon, which I consider the next level as it will require using a multimeter and live current to test where the fault is.Re: Samsung 2693HM - the common "2 s... dark" problem
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Samsung SyncMaster 940BX: My first cap replacement = SUCCESS!
Thanks to everyone on this forum that has helped me in the pursuit of fixing a couple of broekn monitors. While trying to troubleshoot a very challenging 26" screen, I decided to try my hand at a "throw away" monitor, to get some practice.
The SyncMaster 940BX had the typical "2 seconds then dark problem". You could see things going on with flashlight, so it was pretty clear that the issue was in the lamp section.
Opening her up:
One of the three offenders:
Post removal, Mushroom City:...
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Re: Samsung 2693HM - the common "2 seconds to dark" problem
FWIW, I got a really good deal on five United Chemicon KY caps in the right spec ($3 for all 5). Would have bought them here, but there were none available in 35V. I'll test the screen and if all points to the caps, I'll have them in time for replacement.
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Samsung 2693HM - the common "2 seconds to dark" problem
I got my hands on a Samsung 2693HM after the previous owner tossed it. I plugged it in and get the "2 seconds then dark" problem that seems to plague this monitor's smaller cousin, the 2493HM. I can't find any previous references of a 2693HM owner having the same problem, so appear to be treading in new waters.
Repro steps:[LIST][*]Connect monitor to computer[*]Turn on - blue light stays lit[*]Desktop shows up for a few seconds then goes black[*]I can see images on the screen after it goes dark with a bright light shining on the screen[*]Turning the monitor on/off consistently...
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