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Monitor did not power on (power diod flash once) so i opened it and found that 450V 100uF is for change and i did it. now no power diod flashes neather.

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Won't turn on


Hello, please check +/- input capacitors 2052,2068 and 2071. Replace Diode 6307 (BY229X600). Also replace 2055 100uf/50V with 100uf/63V Best regards, Arpi

Jun 23, 2007 | Philips 50P8341 50" Rear Projection...

1 Answer

My monitor is turned on displays then goes black. Off and on same thing happen after a few seconds. I replaced most capacitors 470uf, but i didn't replace a 22uf 50v. and a 100uf 450V. after...


Hello Richard Strong,
Welcome, and thank you for using FixYa!
To answer your question: I believe you need to replace the two capacitors that you skipped.
Then touch up every soldier joint on the power supply board. Lastly, I would look for the replacement part for the +5V and -5V transistors on the power supply board. They may need replaced as well. If you have an Ocilliscope you may be able to test out where the power is failing.

Have a great day!

Oct 28, 2011 | Computers & Internet

1 Answer

Fix my desktop monitor HP w19e goes black after a few seconds. the screen displays then goes black. I changed most capacitors 470uf. I didn't change two other capacitors A 22uf 50V and 100uf 450V. I...


w19e (2006) 12 year old relic, legacy monitors, sure. CCLF junk.''
(1440 x 900). (not over this resolution)!\
HP does not sell parts this old !!!

get a new monitor, fixing cost more than new and for sure refurbs at $50. (unless labor is free, ? even then too much)
first off its too old , the CCFL are no good now.
"back lamps"

are you going to replace those. some are near impossible to remove and not wreck the LCD array.!
1: turn off power saver and timer in the menu OSD yet.
that is first first. (the book shows this feature missing) yours.

2: then does the flash light trick show there is data there, omg
the data is there, the CCFL lamps are dead. or the inverter.


see your boards here, see the brown one bottom 2 cream connectors. those are the 2x 500vdc power jacks to the CCFL tubes
if that is dead, ebay has it for 15 bucks. (what deal no)
but if the tubes are bad good luck there.
the first test would be the flash light test


w19e-ysl4vcr25ekwcyxfuustmq5b-5-0.jpg why own such a monitor if the ccfls can not be removed.
I avoid them all an buy 2010 and newer with LED backlamps.

flashlight test
http://www.pcdied.com/monitors.html#flashlighttest

Jan 13, 2018 | HP Computers & Internet

1 Answer

Samsung syncmaster 204b not turning on- My monitor's problem was when it switched off, the only way to make it work was switching off main power, and turning on again, then it would come back on...


in near your monitor u find any metallic product than you please remove the the monitor and plug in another side if your problems is steel not solved than you please contact samsung service center regarding this issue...........

Dec 17, 2010 | Samsung SyncMaster 204B (Silver, Black)...

1 Answer

Hi, I have a Syncmaster 931BW that has ruptured the large capacitor on the power board. It looks as if it is rated as 100uf 450v. Hard to read as it is still bonded to the board. Is this correct and do...


Not very often, it is the main DC filter caps on the primary side of the switching power supply, 100uf 450vdc is correct value. Just cut the wraper off with a razor blade then it will be easier to remove the bad caps.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Aug 11, 2010 | Samsung 19" LCD Syncmaster 931BW Monitor

2 Answers

Monitor will not come on power light blinking blue


According to the manual, the frequency may be out of the range of the monitor. Adjust the frequency to the range needed by the monitor. Normally 60Hz will work fine.

Nov 04, 2009 | Samsung 941BW LCD Monitor

1 Answer

Samsung Syncmaster 941BW No power


My Samsung 941BW would not display, only a flashing blue power button; no-onscreen menu, nothing. The internal power supply had 9 CapXon brand capacitors. Two (C109 & C110) were bulging. I replaced all except the huge 100uF 450V Cap and Presto-Magico....the monitor works fine now. If you are comfortable replacing circuit card components, go for it! Thanks for the tip, budmrtn!

Aug 27, 2009 | Samsung 941BW LCD Monitor

1 Answer

IC Power 19'' LCD Product PA192D Model # 900G quit working


I C Power PA192D Model 900G, Mfg Sep '05 19inch LCD
I purchased this monitor at Goodwill not working for $20. The 900G power light failed to come on and there was no video when turned on. To fix, first pull the 2 screws at the bottom of the back side of the monitor_ note this face is NOT removed by prying with a screwdriver like other monitors, it IS removed by sliding the face plate Upwards. Remove the LCD screws and remove the wires to the backlights carefully noting what goes where. Remove the metal cover and remove the 110volt power board. I found smoke trails under the cover and a swollen 470uf25v capacitor number C206, and replaced C110, C211 all were 470uf. Reassembled and found no change. Tore down again, used the ESR meter CapAnalyzer 88a and found C114 47uf25v to be 30% working, the volt ohm showed the cap to be good, that's why the ESR meter was needed. Replaced the 47uf25v C114, tested the large 100uf 450v capacitor, it tested only slightly under spec , could not find a 100uf at Radio Shack so did not replace it. So in this attempt the only thing changed was the 47uf C114. Reassembled and now works perfectly.

i'm not an expert at anything...x'cept maybe dumpster diving. God Bless

Nov 20, 2008 | LG Flatron L1951S-SN 19" LCD Flat Panel...

2 Answers

17 in dell monitor


Please disconnect the Monitor Data cable from Computer.
If you see Dell Colored bars, it means, monitor is working fine,
If still black, please ask for replacement, since Monitors have 3 years of warranty if not purchased with the computer.

Now connect the cable back to computer and turn the computer off by holding the power button on computer and turn it back on...

Blinking Green shows that computer is in sleep mode......

Hope this should resolve the issue.

Nov 06, 2008 | Dell UltraSharp 1704FPT 17" Flat Panel LCD...

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